Re: [Elecraft] K3 in a cw pileup - needs work
Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? 73 Doug EI2CN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: 07 February 2010 01:01 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 in a cw pileup - needs work Barry N1EU wrote: You need to maximize your rf/af dynamic range - that is what is going to turn that mush into a beautiful symphony of distinct signals of varying levels. What has worked well for me is AGC off (although AGC on works fine as well), high isolation headphones, and the gain throttling techniques (most important) described by K3NA, W4ZV, myself, and others. Just to continue from previous post - I experienced only mush in pileup reception until fully adopting this technique. High isolation headphones are critical because you want to set gain such that weak signals are lightly heard but clearly copiable. You're maximizing the receive dynamic range delivered to your ears and the high isolation means you can clearly hear fainter signals without turning up the gain and squashing the dynamic range (and too frequently engaging AF Limiter with AGC Off). 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4527626.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
High isolation headphones below means ~30 dB isolation from ambient noise. Heil does not make any in this range and most active noise reduction headphones (e.g. Bose) only have 10-15 dB. Here are some examples of what Barry meant: http://www.extremeheadphones.com/ex-29.html http://www.sennheiserusa.com/private_headphones_dj-headphones_004974 http://www.etymotic.com/ephp/er6.aspx These are all available in the $75-100 range. 73, Bill Doug Turnbull wrote: Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? 73 Doug EI2CN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: 07 February 2010 01:01 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 in a cw pileup - needs work Barry N1EU wrote: You need to maximize your rf/af dynamic range - that is what is going to turn that mush into a beautiful symphony of distinct signals of varying levels. What has worked well for me is AGC off (although AGC on works fine as well), high isolation headphones, and the gain throttling techniques (most important) described by K3NA, W4ZV, myself, and others. Just to continue from previous post - I experienced only mush in pileup reception until fully adopting this technique. High isolation headphones are critical because you want to set gain such that weak signals are lightly heard but clearly copiable. You're maximizing the receive dynamic range delivered to your ears and the high isolation means you can clearly hear fainter signals without turning up the gain and squashing the dynamic range (and too frequently engaging AF Limiter with AGC Off). 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4527626.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4528787.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Doug Turnbull wrote: Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? I'm only familiar with the Pro Set and that really doesn't have the level of isolation needed, as Bill said. I researched what drummers are using during live/recording sessions and ended up buying Sennheiser HD-280 phones, which work well. A bit more isolation could be had with in-ear phones or perhaps active isolation phones but the HD-280's are a significant step beyond the Pro Set. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4528969.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Re: Field Day Antenna Setup
I couldn't see a price for the Blue Sky mast, but anything that high quality has to be expensive. What about a spiderbeam on one of their 50' aluminum masts? (www.spiderbeam.us) Or, the MFJ fiberglass mast at 40'. Last year for FD we built a hexbeam and put it up about 50' -- it was wonderful. DX Engineering sells a hexbeam center plate that we'll buy this year, if we do it again. These are all 20-15-10, of course. Decent gain, good F/B, and published specs. Like donated computer equipment -- a donated antenna may not fit your purpose. Peter N8MHD On Sat, Feb 6, 2010 at 9:07 PM, Brett Howard br...@livecomputers.com wrote: I'm looking at a mast setup from Blue Sky Masts (http://www.blueskymast.com) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Are you guys sure this is a frequency domain problem? Has anyone measured those IMD products under the mentioned conditions and concluded from the results that they are the culprit for the mushy (somewhat vague description) audio that makes impossible to copy the different callsigns? Some W6s measured in a lab test setup a similar effect on the FT1000MP years ago and found that the problem was the AGC recovering too fast (in between symbols) making all signals sound as loud as others. The solution was to increase the time constant. The loudest signal would then set the radio gain level. Then characters in-between from weaker signals sounded weaker making them distinct (or maybe buried). I cant think why you would ever need a recovery time constant any shorter than say 150 ms, while shorter time constants are normally used -reading Clifton I think the FAST setting in the K3 is 73 ms-. At 60 WPM, a dit is 20ms long if I am not mistaken, and an intersymbols spacing (7 time units) to full gain recovery seems the shortest time that would be necessary for the receiver to recover full gain. 73 de Juan EA5RS -Mensaje original- De: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] En nombre de Geoffrey Mackenzie-Kennedy Enviado el: sábado, 06 de febrero de 2010 11:56 Para: Guy Olinger K2AV CC: Elecraft Discussion List Asunto: Re: [Elecraft] K3 in a cw pileup - needs work Hi Guy, The problem reported has the classic characteristics of in-passband IMD caused by a small dynamic range (IMDDR3) IF system, rather than being something caused by the AGC sub-system. Yes changing the AGC's loop characteristics will alter the effect, but the root cause is still non-linearity in the signal path. I suspect the second mixer. Trouble is that large IMDDR3 IF systems can consume a lot of power, and low power drain by the K3's receiver was a design goal I believe. 73, Geoff GM4ESD On Saturday, February 06, 2010 at 5:17 AM, Guy Olinger K2AV wrote: Hi Dave, Using slope 000 is likely most of your problem. With that setting all signals regardless of strength are set to the same level regardless of how loud they are coming in. If they are zero beat or close, it will mush the dickens out of the copy by making them all the same level in your ear. I set AGC SLP to 15 for contests. I also use slow AGC the entire time. If there are key clicks, I use NB with IF off and dsp to t3-7 or t2-7. It rounds off CW bauds some but does not make them uncopyable. Make sure your ATT/PRE/RFGAIN use conforms to something like: 160m ATT plus RF gain at 2 oclock 80m ATT plus RF gain at 3 oclock 40m ATT plus RF gain fully clockwise. 20m 15m off plus RF gain fully clockwise. 10m PRE plus RF gain fully clockwise. 6m ...if you are listening on your transmit antenna. At least to start. Make sure the ambient noise on the band is moderately low audio listening on a clear frequency. Using the NB with those settings, including the ATT/PRE/RFGAIN settings. Just today I was listening to an S4 Cuban underneath what were S9/5 key clicks with the NB off. Offending station up 500 Hz at 30 over 9 (really), and was using 250 filter running at WIDTH 350. Good luck in Sprint this weekend! 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Informacisn de NOD32, revisisn 4576 (20091105) __ Este mensaje ha sido analizado con NOD32 antivirus system http://www.nod32.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
High isolation earphones: A low cost solution is to use any in-ear type earphone that suits you plus a pair of common or garden ear defenders. The earphone lead should be as thin as possible so that the leakage around the lead as it exits the defender is as small as possible. Ear defenders I have come across make the head sweat and therefore uncomfortable after an hour or so; a cloth cover, such as aircraft headphones have is a solution, but reduces isolation slightly. David G3UNA Doug Turnbull wrote: Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? I'm only familiar with the Pro Set and that really doesn't have the level of isolation needed, as Bill said. I researched what drummers are using during live/recording sessions and ended up buying Sennheiser HD-280 phones, which work well. A bit more isolation could be had with in-ear phones or perhaps active isolation phones but the HD-280's are a significant step beyond the Pro Set. 73, Barry N1EU -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
The High isolation headphones are of course only going to help if you have much ambient noise in the shack. I find my Beyerdynamic DT234PRO headset very good. It's not a very high isolation headset but it's a fully closed design and my shack is reasonably quiet the DT234PRO is a headset that is produced for language lab type applications and widely used by PC gamers too, it's comfortable to wear for long periods of time and provides reasonable isolation from the surroundings. I get great audio reports from the microphone which is a back electoret condenser with a cardioid pattern. It has a presence peak (like most microphones intended for the spoken word, Heil did not 'invent' this..) and the cardioid pattern helps to reduce pick-up of any ambient noise It's completely Plug and play with the K3, plug it in the back and turn Microphone bias. I paid about 60 Euro for it on Ebay 73 Brendan EI6IZ On Sun, 2010-02-07 at 03:21 -0800, Bill W4ZV wrote: High isolation headphones below means ~30 dB isolation from ambient noise. Heil does not make any in this range and most active noise reduction headphones (e.g. Bose) only have 10-15 dB. Here are some examples of what Barry meant: http://www.extremeheadphones.com/ex-29.html http://www.sennheiserusa.com/private_headphones_dj-headphones_004974 http://www.etymotic.com/ephp/er6.aspx These are all available in the $75-100 range. 73, Bill Doug Turnbull wrote: Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? 73 Doug EI2CN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: 07 February 2010 01:01 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 in a cw pileup - needs work Barry N1EU wrote: You need to maximize your rf/af dynamic range - that is what is going to turn that mush into a beautiful symphony of distinct signals of varying levels. What has worked well for me is AGC off (although AGC on works fine as well), high isolation headphones, and the gain throttling techniques (most important) described by K3NA, W4ZV, myself, and others. Just to continue from previous post - I experienced only mush in pileup reception until fully adopting this technique. High isolation headphones are critical because you want to set gain such that weak signals are lightly heard but clearly copiable. You're maximizing the receive dynamic range delivered to your ears and the high isolation means you can clearly hear fainter signals without turning up the gain and squashing the dynamic range (and too frequently engaging AF Limiter with AGC Off). 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4527626.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- 73 Brendan EI6IZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Dick Green WC1M-2 wrote: Dave indicates that the problem occurred when the pileup consisted of four or five loud stations. This leads me to wonder if the cause is the K3 hardware AGC threshold being too low, even after the mod introduced two years ago. If gain were throttled (e.g., via ATT on, PRE off, reduced RF Gain), wouldn't AGC Threshold be effectively raised? 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4529079.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
This is true, but seems to be a VERY hard point to get across. Running excess gain in RF/IF strip is at the root of some number of complaints. 73, Guy. On Sun, Feb 7, 2010 at 8:22 AM, Barry N1EU barry.n...@gmail.com wrote: Dick Green WC1M-2 wrote: Dave indicates that the problem occurred when the pileup consisted of four or five loud stations. This leads me to wonder if the cause is the K3 hardware AGC threshold being too low, even after the mod introduced two years ago. If gain were throttled (e.g., via ATT on, PRE off, reduced RF Gain), wouldn't AGC Threshold be effectively raised? 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4529079.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
If you simply raise AGC Threshold, you will have to lower AF Gain or risk overly loud audio from stronger signals. So what you would effectively be doing is translating upwards the K3's dynamic range into higher rf levels. This is NOT good practice - you want to keep the dynamic range operating at lower rf levels (thus all the talk of gain throttling). 73, Barry N1EU Guy, K2AV wrote: This is true, but seems to be a VERY hard point to get across. Running excess gain in RF/IF strip is at the root of some number of complaints. On Sun, Feb 7, 2010 at 8:22 AM, Barry N1EU barry.n...@gmail.com wrote: If gain were throttled (e.g., via ATT on, PRE off, reduced RF Gain), wouldn't AGC Threshold be effectively raised? -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4529273.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] AGC and DNR
Hi All, This has probably been discussed, and I obviously missed it. It's probably in the manual somewhere too. Since I have not previously been one to turn my AGC off, I just wasn't aware of it. Now I find that if I turn my AGC off, my DNR will not engage--I get a big N/A. So, this is normal? You must have the AGC on to use DNR? I apologize in advance for my ignorance on this matter. Dave W7AQK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Barry, I do not believe that is true, and the graphs at http://www.cliftonlaboratories.com/elecraft_k3_agc_and_s-meter.htm#AGC_SLP_and_AGC_THR bear the real facts as well. Raising the AGC Threshold allows stronger weak signals (less than -100 dBm for THR=008) NOT to activate the AGC. Stronger signals will still activate AGC. The Hardware AGC is not changed by the threshold setting. The result is the range over which the AGC operates, and that is different than the dynamic range of the receiver. The Gain Throttling talk has mostly been with reference to the amplification of atmospheric noise rather than the detection of weak signals. While related, I do not think they are the same. The preamp and attenuator DO translate the receiver dynamic range to a higher or lower level - and the hardware AGC trigger point is translated as well. Since the RF Gain is really an IF gain, it does not alter the onset of hardware AGC. Lyle would have to comment on whether the DSP AGC is developed before or after the IF gain is applied, I do not know. 73, Don W3FPR Barry N1EU wrote: If you simply raise AGC Threshold, you will have to lower AF Gain or risk overly loud audio from stronger signals. So what you would effectively be doing is translating upwards the K3's dynamic range into higher rf levels. This is NOT good practice - you want to keep the dynamic range operating at lower rf levels (thus all the talk of gain throttling). 73, Barry N1EU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
I don't believe so. I'm recommending using only just enough RF/IF gain to produce moderately low audio from ambient noise on a clear frequency. You can set the AGC threshold anywhere you want according to taste. Some are using NO AGC and the audio limiter to expand threshold to the audio limiter level. I'm proposing that there is a moderation point between one extreme of ambient noise shoved up into the AGC reduction range and the other of no AGC at all. And that changing RF gain during a pile up can maximize amplitude discrimination. Particularly for contests, NOT reducing the RF/IF gain per band on the lower bands just shoves the ambient noise up to a roar where the AGC winds up REDUCING wanted signals down to the level where noise has been BROUGHT UP, reducing the apparent signal to noise as perceived by the ear/brain combination to zero, a researched and documented phenomenon that has been quite appropriately reported by some here as mush. This uncomfortable state is amplified in a pile up where most of the discrete signals become noise for hearing purposes, and the already used up threshold in the AGC forces them all to the same level. Mush is a very good description. (One experiment I recall is asking someone to identify individual conversations out of a monaural recording of a school cafeteria at lunchtime -- only the very loudest can be discerned.) AGC under squished circumstances can make mush all by itself without any help from a purported (but never carefully measured and reported) IMD problem. The AGC threshold engages at a fixed voltage out of the RF/IF string for each step. Only the protective hardware AGC is operative before this point. If your setting of PRE/ATT/RFGAIN places ambient noise at what should be reserved for an S3 signal, you have subtracted that from your selected threshold range, no matter what your threshold preferences. And at worst case have already engaged AGC for the ambient noise. Threshold should allow one to have some range where any level difference in competing signals come through to allow ear/brain to tell them apart, AND still have a top where leveling kicks in to protect the ears. 73, Guy. On Sun, Feb 7, 2010 at 9:19 AM, Barry N1EU barry.n...@gmail.com wrote: If you simply raise AGC Threshold, you will have to lower AF Gain or risk overly loud audio from stronger signals. So what you would effectively be doing is translating upwards the K3's dynamic range into higher rf levels. This is NOT good practice - you want to keep the dynamic range operating at lower rf levels (thus all the talk of gain throttling). 73, Barry N1EU Guy, K2AV wrote: This is true, but seems to be a VERY hard point to get across. Running excess gain in RF/IF strip is at the root of some number of complaints. On Sun, Feb 7, 2010 at 8:22 AM, Barry N1EU barry.n...@gmail.com wrote: If gain were throttled (e.g., via ATT on, PRE off, reduced RF Gain), wouldn't AGC Threshold be effectively raised? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Hello Juan, Thanks for your e-mail. I will reply in full after I return home this evening, off-list if my answer is long. The symptoms, and the cures suggested, strongly suggest that it is a well known type of IMD problem caused by the IF hardware - which includes the roofing filter. I understand the AGC recovery problem that you mention, but do you know if the in-passband IMD products of the FT1000MP were actually measured? To measure IMD products with both test signals inside a CW bandwidth passband usually requires crystal controlled generators for reasons of low phase noise, especially if the receiver's in-passband odd-order dynamic range is large. Increasing bandwidth to allow much wider spacings of the test signals usually paints a false picture, because the signal handling capability of narrow bandwidth crystal filters is usually worse than that of the wider filters. 73, Geoff GM4ESD On Sunday, February 07, 2010 at 12:57 PM, Juan EA5RS ea...@ono.com wrote: Are you guys sure this is a frequency domain problem? Has anyone measured those IMD products under the mentioned conditions and concluded from the results that they are the culprit for the mushy (somewhat vague description) audio that makes impossible to copy the different callsigns? Some W6s measured in a lab test setup a similar effect on the FT1000MP years ago and found that the problem was the AGC recovering too fast (in between symbols) making all signals sound as loud as others. The solution was to increase the time constant. The loudest signal would then set the radio gain level. Then characters in-between from weaker signals sounded weaker making them distinct (or maybe buried). I cant think why you would ever need a recovery time constant any shorter than say 150 ms, while shorter time constants are normally used -reading Clifton I think the FAST setting in the K3 is 73 ms-. At 60 WPM, a dit is 20ms long if I am not mistaken, and an intersymbols spacing (7 time units) to full gain recovery seems the shortest time that would be necessary for the receiver to recover full gain. 73 de Juan EA5RS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
It would be interesting to know what all is used to create the signal on VIFGAIN1 on the RF board. It is at least some derivative of the signal from the RF gain control. 73, Guy. On Sun, Feb 7, 2010 at 10:07 AM, Don Wilhelm w3...@embarqmail.com wrote: Barry, I do not believe that is true, and the graphs at http://www.cliftonlaboratories.com/elecraft_k3_agc_and_s-meter.htm#AGC_SLP_and_AGC_THR bear the real facts as well. Raising the AGC Threshold allows stronger weak signals (less than -100 dBm for THR=008) NOT to activate the AGC. Stronger signals will still activate AGC. The Hardware AGC is not changed by the threshold setting. The result is the range over which the AGC operates, and that is different than the dynamic range of the receiver. The Gain Throttling talk has mostly been with reference to the amplification of atmospheric noise rather than the detection of weak signals. While related, I do not think they are the same. The preamp and attenuator DO translate the receiver dynamic range to a higher or lower level - and the hardware AGC trigger point is translated as well. Since the RF Gain is really an IF gain, it does not alter the onset of hardware AGC. Lyle would have to comment on whether the DSP AGC is developed before or after the IF gain is applied, I do not know. 73, Don W3FPR Barry N1EU wrote: If you simply raise AGC Threshold, you will have to lower AF Gain or risk overly loud audio from stronger signals. So what you would effectively be doing is translating upwards the K3's dynamic range into higher rf levels. This is NOT good practice - you want to keep the dynamic range operating at lower rf levels (thus all the talk of gain throttling). 73, Barry N1EU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Don Wilhelm-4 wrote: I do not believe that is true, and the graphs at http://www.cliftonlaboratories.com/elecraft_k3_agc_and_s-meter.htm#AGC_SLP_and_AGC_THR bear the real facts as well. Raising the AGC Threshold allows stronger weak signals (less than -100 dBm for THR=008) NOT to activate the AGC. The graphs are dependent on gain level that is set in the rx. If there's any hope of alleviating pileup mush by raising Threshold level, I believe it would be true (that stronger signals will raise audio level). When I throttle the gain, I notice that lowering Threshold lowers audio level of stronger signals. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4529522.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] AGC and DNR
...I find that if I turn my AGC off, my DNR will not engage--I get a big N/A. So, this is normal? Yes, this has always been the case and remains so. The LMS algorithm can become unstable under certain conditions, one of which is related to maximum signal level. With AGC OFF, NR could become unstable from a really strong signal, so it is inhibited from operating. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
When I throttle the gain, I notice that lowering Threshold lowers audio level of stronger signals. 73, Barry N1EU As it should, because you lowered the reference signal level at DSP input which the AGC bites. It also means that by throttling the gain, you have created a situation where YOUR choice of threshold actually has an effect. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
YES! That is exactly the question I would like to ask. I very much looked forward to the release a couple of years ago, and now you can't even get a comment from Elecraft about the situation. IMO, QRO is much more important than all these trivial little toys they are building now. I have a much more pressing need for a KPA- than I do a panadapter (with limited features) and a wattmeter. I have a very nice panadapter that has rig control from the computer, and it didn't cost 700 bucks, and I can control it with the MOUSE. Wayne/Eric, how about some comments on this subject. At least tell us what the future holds for the KPAs. I'm holding off buying a new amp till the KPAs are released. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DaveVK Sent: Sunday, February 07, 2010 12:21 AM To: elecraft@mailman.qth.net Subject: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 What happened to the Elecraft Amps? Did they get beyond 'proto: gee I want one' stage? -- View this message in context: http://n2.nabble.com/What-became-of-the-Elecraft-s-KPA1500-and-KPA-800-tp452 8292p4528292.html Sent from the [OT] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2673 - Release Date: 02/07/10 01:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 DSP AGC Question
...Lyle would have to comment on whether the DSP AGC is developed before or after the IF gain is applied... Assuming ATT and PRE are OFF, hardware AGC voltage begins to have an effect on IF amplifier gain with a signal at the antenna in the region of -60 dBm, plus or minus a few dB. The hardware AGC voltage is developed at the final IF of 15 kHz and applied to the 8.215 MHz IF stage. Its purpose is to prevent the 15 kHz A to D converter at the DSP from being driven beyond its input limits (called over-ranging). The onset of hardware AGC level is influenced by PRE (which increases gain ab out 10 dB, decreasing the signal required at the antenna by the same 10 dB), ATT (which reduces signals by 10 dB, thus increasing the required signal at the antenna), and RF Gain when backed off sufficiently. What is sufficiently? The DSP outputs a voltage to control the IF gain of the radio. This voltage is compared with the hardware AGC voltage, and the higher voltage is applied to reduce the IF gain. If the RF Gain is backed off enough so that the resulting gain control voltage is grater than the hardware AGC voltage derived from the 15 kHz IF signal, then the criterion for sufficiently has been met. The DSP reads the hardware AGC voltage, regardless of the source, and uses the value as part of the S Meter calculation. The DSP AGC algorithm is computed based on the 15 kHz IF signal applied to the DSP's A to D converter. Thus it is after the IF gain is applied. Enjoy! 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Here's what needs work (or explanation)
K6LL wrote: So I transfer the headphones to the speaker output, so I can reduce the AF gain setting in an attempt to get away from the raucous AF limiter. This works for a while, until finally one loud signal blows out the K3's audio amplifier. This is the second time that has happened to me. I guess I'm a slow learner on that issue. Something really needs to be done here. My suggestions would to raise the agc threshold further, and increase the slope of the agc line (that would mean a slp setting of less than zero). The AF limiter threshold also needs to be raised, and the AF speaker output needs better protection. With all the discussion of AGC on/off, threshold levels and gain throttling, etc. for improved performance in pileups, I haven't seen any further mention of what I consider to be the most serious problem reported by K6LL, namely that the K3's audio amplifiers can apparently be damaged by user control settings. If this is considered acceptable (I don't believe it should be), are these control settings adequately described in the K3 user's manuals and updates? Is the susceptibilty to damage confined to K3's where the hardware audio modifications have yet to be made? 73, Chuck Guenther NI0C K2-10 s/n 5853 K3-100 s/n 1061 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz
Bingo! I restored my last config (from 1/20) and problem is gone.. Now I am trying to noodle over what configuration item may have changed during the beta upgrade that caused it. At any rate, all is good now! Rick K6LE On 2/6/2010, at 11:07 , WW2PT wrote: My K3 was working fine last time I used it. Tonight I turned it on and noticed a similar problem -- no audio in USB or LSB modes whenever I set the width to 3.00 kHz or less. Tried downgrading from 3.76 to 3.63 but no change. Checked all filter settings in the config menu, nothing out of place. All other modes were fine. On a hunch, I restored my last configuration backup file. It worked! Everything seems to be behaving well again. 73 de WW2PT On Feb 6, 2010, at 12:45 AM, Scott Prather wrote: All: This evening when running FW 3.76 I'm seeing a problem with my K3 that I've never seen before. When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth down to 2.8 kHz will result in total loss of audio, even though the S-meter continues to read incoming signal strength. I've tried an EE-Init and reloaded the configuration, but the problem remains. Thinking this might be related to 3.76, I went back to 3.30 and I have exactly the same problem. If I turn on the sub receiver and change its BW using BSET, it loses LSB, USB and AM audio at 2.8 kHz as well. To get audio to return, all I need to do is change the BW to 2.9 kHz or greater on either the main or the sub. Looking through the reflector postings, it looks like someone saw something similar to this in the DATA mode a few months back, and pressing the A/B key would clear it. However, in my case the only way I can restore audio is to change the BW to 2.9 kHz or greater. In the CW and DATA modes, the audio does not drop out at any bandwidth setting. Does anyone have a suggestion as to what might be going on? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Barry N1EU wrote: If you simply raise AGC Threshold, you will have to lower AF Gain or risk overly loud audio from stronger signals. I just realized that the above wording might have caused confusion. What I meant by raising AGC Threshold was to change the firmware to accommodate the requests of those who posted that the existing 8 wasn't high enough. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4529874.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Barry N1EU wrote: If you simply raise AGC Threshold, you will have to lower AF Gain or risk overly loud audio from stronger signals. I just realized that the above wording might have caused confusion. What I meant by raising AGC Threshold was to change the firmware to accommodate the requests of those who posted that the existing 8 wasn't high enough. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4529882.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Diversity Recieve Issue
This morning I was listening on 15 meters using ant2 which is hooked to one of my verticals. I switched to ant1 (my second vertical) and I could barely make out the signal. While still set to ant1 I switched to diversity receive and I still could barely hear the signal in either ear. I then switched off diversity, changed back to ant 2. I could hear the signal again. I then switched to diversity while still on ant2 and I could hear the signal well in both ears. It seems like diversity receive is just giving me stereo receive of one antenna, not true diversity receive of both antennas. What could I be doing wrong? Am I missing a setting somewhere? I have the Config/Spkrs set to 2 and I have config/L-Mix-R set to A b. Just for reference, I do not have matched filters in both receivers. Ken NE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
Ken, Matching filters is a good thing. You need to have both antennas hooked to the radio. I use the aux antenna for one and the main to antenna one. In bset, you select when pressing the antenna switch. Then I adjust the rf gain for each antenna to give similar output to the line out into my desktop stereo speakers. Bill K9YEQ KX1, K2, K3, THP HL2.5Kfx Date: Sun, 7 Feb 2010 11:49:20 -0500 From: k...@nicelyweb.com To: elecraft@mailman.qth.net Subject: [Elecraft] Diversity Recieve Issue This morning I was listening on 15 meters using ant2 which is hooked to one of my verticals. I switched to ant1 (my second vertical) and I could barely make out the signal. While still set to ant1 I switched to diversity receive and I still could barely hear the signal in either ear. I then switched off diversity, changed back to ant 2. I could hear the signal again. I then switched to diversity while still on ant2 and I could hear the signal well in both ears. It seems like diversity receive is just giving me stereo receive of one antenna, not true diversity receive of both antennas. What could I be doing wrong? Am I missing a setting somewhere? I have the Config/Spkrs set to 2 and I have config/L-Mix-R set to A b. Just for reference, I do not have matched filters in both receivers. Ken NE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Firmware upload problem
Ruben (et. al.): De ninguna manera, por favor, no use el MicroHAM Router para cambiar la software en el K3. Sin ninguna excepcion, microHAM no suporta usar el Router para hacer esto y es muy posible danar el K3 en esta manera. Si usted utiliza el sistema microHAM Router en esta manera, lo hace a su propio riesgo para el radio y el equipo de microHAM. Just making sure everybody understands the importance of what Joe says in his message. Here is what I do: I have a Dell GX280 PC as my ham radio computer. It has one real serial port and 6 USB onboard ports. My K3 is attached to Router using a Saelig.com FTDI chipset based USB to serial converter. The output of this converter goes to a $8.00 2 in one out DB9 Mechanical Data switch on port A. The output of the real serial port goes to that same switch on port B. A short serial DB9 to DB9 cable goes from port C of the switch to the radio. When I want to use the rig with the microHAM router and the MicroKEYER 2 interface, I switch to port A. When I want to configure the rig using K3-EZ or the Elecraft K3 Utility, I switch to port B. I have never had an issue with software uploads or control glitches with this wiring scheme. Plus, the data switch makes a nice pedestal to mount my Autek WM1! When I throw the mechanical switch from port to port, microHAM router recognizes that communication is lost and flashes the frequency display in the MicroKEYER 2's screen to let me know the radio is not under MicroHAM control. Switching back to the Router's serial port re establishes the communication with the MicroKEYER device almost instantly and the display then shows my selected radio information (in my case, I display both of the receiver's frequency information. What information is displayed is selectable in the MicroKEYER 2's configuration tab in Router). This has always worked reliably here. Regards Lu Romero - W4LT Date: Sat, 6 Feb 2010 16:12:47 -0500 From: Joe Subich, W4TV li...@subich.com Subject: Re: [Elecraft] Firmware upload problem To: 'Ruben Navarro Huedo' runa...@gmail.com, elecraft@mailman.qth.net Message-ID: f70adb3b0f3344eab53dbad5d1e9e...@laptop Content-Type: text/plain; charset=iso-8859-1 Setting No radio does not guarantee transparent operation by microHAM Router. Again: DO NOT PERFORM A FIRMWARE UPLOAD USING MICROHAM ROUTER WITH ANY MICROHAM INTERFACE. NO EXCEPTIONS. Even though I know my way around Router and the microHAM interfaces well enough to generally make sure Router is transparent, there is no way to force and lock the data rate between the microHAM interface and the transceiver. I keep a serial cable attached to a serial port on one of my computers specifically for use when updating K3 firmware. 73, ... Joe, W4TV No virus found in this outgoing message Checked by PC Tools AntiVirus (6.1.0.25 - 6.14300). http://www.pctools.com/free-antivirus/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] My Bad. (AGC SLP).
I apologize. In the ongoing thread [Elecraft] K3 in a cw pileup - needs work, as correctly pointed out, I reversed the SLP value for least and most slope. I have not changed AGC config settings in at least over a year, and have left them at settings arrived at experimentally in contests. Never found a reason to change them back. When I brought up my own setting on CONFIG, I was using Dave's SLP setting (000) for the same reason he is. I did know I was using the least amount of compression on the slope. What I deservedly get for writing emails when I'm tired and trusting my memory. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
That should read aux antenna when in b-set Bill K9YEQ KX1, K2, K3, THP HL2.5Kfx From: k9...@live.com To: k...@nicelyweb.com; elecraft@mailman.qth.net Date: Sun, 7 Feb 2010 11:15:31 -0600 Subject: Re: [Elecraft] Diversity Recieve Issue Ken, Matching filters is a good thing. You need to have both antennas hooked to the radio. I use the aux antenna for one and the main to antenna one. In bset, you select when pressing the antenna switch. Then I adjust the rf gain for each antenna to give similar output to the line out into my desktop stereo speakers. Bill K9YEQ KX1, K2, K3, THP HL2.5Kfx Date: Sun, 7 Feb 2010 11:49:20 -0500 From: k...@nicelyweb.com To: elecraft@mailman.qth.net Subject: [Elecraft] Diversity Recieve Issue This morning I was listening on 15 meters using ant2 which is hooked to one of my verticals. I switched to ant1 (my second vertical) and I could barely make out the signal. While still set to ant1 I switched to diversity receive and I still could barely hear the signal in either ear. I then switched off diversity, changed back to ant 2. I could hear the signal again. I then switched to diversity while still on ant2 and I could hear the signal well in both ears. It seems like diversity receive is just giving me stereo receive of one antenna, not true diversity receive of both antennas. What could I be doing wrong? Am I missing a setting somewhere? I have the Config/Spkrs set to 2 and I have config/L-Mix-R set to A b. Just for reference, I do not have matched filters in both receivers. Ken NE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
So does the receive antenna have to be on the aux port of the Receive Ant., IF out board (KXV3A) for diversity, or can it also be on Ant2 of the ATU (KAT3-F)? On Sun, Feb 7, 2010 at 12:17 PM, Bill Johnson k9...@live.com wrote: That should read aux antenna when in b-set *Bill* K9YEQ KX1, K2, K3, THP HL2.5Kfx From: k9...@live.com To: k...@nicelyweb.com; elecraft@mailman.qth.net Date: Sun, 7 Feb 2010 11:15:31 -0600 Subject: Re: [Elecraft] Diversity Recieve Issue Ken, Matching filters is a good thing. You need to have both antennas hooked to the radio. I use the aux antenna for one and the main to antenna one. In bset, you select when pressing the antenna switch. Then I adjust the rf gain for each antenna to give similar output to the line out into my desktop stereo speakers. Bill K9YEQ KX1, K2, K3, THP HL2.5Kfx Date: Sun, 7 Feb 2010 11:49:20 -0500 From: k...@nicelyweb.com To: elecraft@mailman.qth.net Subject: [Elecraft] Diversity Recieve Issue This morning I was listening on 15 meters using ant2 which is hooked to one of my verticals. I switched to ant1 (my second vertical) and I could barely make out the signal. While still set to ant1 I switched to diversity receive and I still could barely hear the signal in either ear. I then switched off diversity, changed back to ant 2. I could hear the signal again. I then switched to diversity while still on ant2 and I could hear the signal well in both ears. It seems like diversity receive is just giving me stereo receive of one antenna, not true diversity receive of both antennas. What could I be doing wrong? Am I missing a setting somewhere? I have the Config/Spkrs set to 2 and I have config/L-Mix-R set to A b. Just for reference, I do not have matched filters in both receivers. Ken NE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Hotmail: Powerful Free email with security by Microsoft. Get it now.http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] About headphones isolation ?
I own now a complete isolation headset that also have the boom mic,the yamaha CM-500,it covers my whole ears, when my wife talks behind me I cn't hear her anymore (cool!) and the best of all,it cost just $42 no other one will beat this price,audio freq response is 20-20K on the headphones and 100 to 18K on the mic,if anyone is interested I can send the picture of it. AD4C For a refined ham it is compulsory to own a k3 --- On Sun, 2/7/10, Barry N1EU barry.n...@gmail.com wrote: From: Barry N1EU barry.n...@gmail.com Subject: Re: [Elecraft] K3 in a cw pileup - needs work To: elecraft@mailman.qth.net Date: Sunday, February 7, 2010, 12:42 PM Doug Turnbull wrote: Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? I'm only familiar with the Pro Set and that really doesn't have the level of isolation needed, as Bill said. I researched what drummers are using during live/recording sessions and ended up buying Sennheiser HD-280 phones, which work well. A bit more isolation could be had with in-ear phones or perhaps active isolation phones but the HD-280's are a significant step beyond the Pro Set. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4528969.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] AGC and DNR
Dave you are not an ignorant because now that you mentioned it,my K3 behaves the same way, it look like DSP NR works in conjunction with the AGC so when you disengage it then NR will not work at all and the N/A (not aplicable) sign shows at the display,anyway I never use the radio without the AGC,for me it works better that way,but maybe this is another issue that Elecraft should fix. AD4C For a refined ham it is compulsory to own a k3 --- On Sun, 2/7/10, David Y. w7...@cox.net wrote: From: David Y. w7...@cox.net Subject: [Elecraft] AGC and DNR To: elecraft@mailman.qth.net Date: Sunday, February 7, 2010, 2:46 PM Hi All, This has probably been discussed, and I obviously missed it. It's probably in the manual somewhere too. Since I have not previously been one to turn my AGC off, I just wasn't aware of it. Now I find that if I turn my AGC off, my DNR will not engage--I get a big N/A. So, this is normal? You must have the AGC on to use DNR? I apologize in advance for my ignorance on this matter. Dave W7AQK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K-3 Interface to Ameritron ARI-500
Does anyone use the Ameritron ARI-500 with the K-3? Thanks Bob W6VY Yes, I've used the ARI-500 with both the current ALS-600 and the new ALS-1300. It works exactly like the Yaesu band data interface. HOWEVER - you must have the TTL band data modification in the K3. Phil - AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - 'High Isolation Headphones'
Someone here made some recommendations for noise-cancelling headphones. For several years, on long-haul flights, I've been using the Fujikon Pro-Luxe NC-4 which are excellent and much lower cost than others - I paid around GBP 22 (about $35). I bought mine from Radioworld here in UK. Can't really imagine why anyone would need noise-cancelling phones for ham operation, unless the rig is in the living room I guess. 73 Tom G3OLB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 in a cw pileup - workaround solution
A couple days ago I complained about the K3's performance in a CW pileup, with AGC mushing signals together, and the AF limiter restricting overall dynamic range with AGC turned off. Last night in the CW Sprint I took a different approach and it worked wonderfully: LINE OUT from two K3's went to LINE IN of the logging computer's on-board stereo sound card. Sound card line and mixer playback levels were set to maximum. Sensitive headphones were connected to the sound card output through a left/right/both switch. On the K3: config lin out = phones AGC off RF gain/attenuator as low as possible AF gain turned way down (between first two dots). This setup really worked great! With K3 audio gain turned down so low, the only signal to hit the AF limiter was K6NA on 80, and a quick micro-adjustment of the AF gain knob got him under control. I was surprised at how quiet the el cheapo sound card was with its gain turned all the way up. With the K3 audio gain turned all the way down, there was just a trace of occasional digital whine from the sound card, way in the background. With K3 af gain back between the first two dots, no sound card noises could be heard. The pileups were much more manageable this way. I operate so1r in the Sprint, so when I show up on a new band, I am fresh meat, and the pileups are frequently loud and deep. Stations in the pileup could be easily separated by both loudness and pitch. I will be using this setup on CW from now on, and will probably leave the wires hooked up this way for the other modes as well. I already had both K3 line outs connected to the sound card anyway for RTTY, and I use a different soundcard for ssb transmitting. All of this really shouldn't be necessary, but it works, so I'm going with it. Dave Hachadorian, K6LL Yuma, AZ . __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] AGC and DNR
Hector, Lyle emailed an explanation. Apparently DNR gets unstable without AGC, so it is disengaged when AGC is off. I just hadn't noticed it before since, like you, I rarely have AGC off. I was experimenting based on the thread about AGC settings when I noticed it. I'm still looking, but haven't found where it was ever mentioned before. Anyway, it's not a bug in my radio, and Lyle's explanation makes perfect sense now that I think about it. It also give me added appreciation for the things they have to consider when they provide all these neat goodies like DNR. Dave W7AQK - Original Message - From: Hector Padron To: David Y. Cc: elecraft@mailman.qth.net Sent: Sunday, February 07, 2010 10:53 AM Subject: AGC and DNR Dave you are not an ignorant because now that you mentioned it,my K3 behaves the same way, it look like DSP NR works in conjunction with the AGC so when you disengage it then NR will not work at all and the N/A (not aplicable) sign shows at the display,anyway I never use the radio without the AGC,for me it works better that way,but maybe this is another issue that Elecraft should fix. AD4C For a refined ham it is compulsory to own a k3 --- On Sun, 2/7/10, David Y. w7...@cox.net wrote: From: David Y. w7...@cox.net Subject: [Elecraft] AGC and DNR To: elecraft@mailman.qth.net Date: Sunday, February 7, 2010, 2:46 PM Hi All, This has probably been discussed, and I obviously missed it. It's probably in the manual somewhere too. Since I have not previously been one to turn my AGC off, I just wasn't aware of it. Now I find that if I turn my AGC off, my DNR will not engage--I get a big N/A. So, this is normal? You must have the AGC on to use DNR? I apologize in advance for my ignorance on this matter. Dave W7AQK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
So does the receive antenna have to be on the aux port of the Receive Ant., IF out board (KXV3A) for diversity, or can it also be on Ant2 of the ATU (KAT3-F)? It is however it is wired. Some people connect it to the Aux jack, others to the currently de-selected of ANT|ANT2. The essence of the issue is that for diversity, each receiver must be connected to a different antenna. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - 'High Isolation Headphones'
Tom Boucher wrote: Can't really imagine why anyone would need noise-cancelling phones for ham operation Amplifier blower noise. 73, Bill -- View this message in context: http://n2.nabble.com/K3-High-Isolation-Headphones-tp4530272p4530474.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
You can use ANT1 and ANT2 if you have your sub RX plugged into the KAT3 board. Or you can use ANT1 and AUX_RF if you have your SUBRX plugged into the AUX_RF BNC jack. Or you can use RX_ANT and ANT2 or AUX_RF. The RX_ANT port can only be used on the main RX or both RXs at the same time it can't be used on the sub RX only. ~Brett On Sun, 2010-02-07 at 12:37 -0500, Ken Nicely wrote: So does the receive antenna have to be on the aux port of the Receive Ant., IF out board (KXV3A) for diversity, or can it also be on Ant2 of the ATU (KAT3-F)? On Sun, Feb 7, 2010 at 12:17 PM, Bill Johnson k9...@live.com wrote: That should read aux antenna when in b-set *Bill* K9YEQ KX1, K2, K3, THP HL2.5Kfx From: k9...@live.com To: k...@nicelyweb.com; elecraft@mailman.qth.net Date: Sun, 7 Feb 2010 11:15:31 -0600 Subject: Re: [Elecraft] Diversity Recieve Issue Ken, Matching filters is a good thing. You need to have both antennas hooked to the radio. I use the aux antenna for one and the main to antenna one. In bset, you select when pressing the antenna switch. Then I adjust the rf gain for each antenna to give similar output to the line out into my desktop stereo speakers. Bill K9YEQ KX1, K2, K3, THP HL2.5Kfx Date: Sun, 7 Feb 2010 11:49:20 -0500 From: k...@nicelyweb.com To: elecraft@mailman.qth.net Subject: [Elecraft] Diversity Recieve Issue This morning I was listening on 15 meters using ant2 which is hooked to one of my verticals. I switched to ant1 (my second vertical) and I could barely make out the signal. While still set to ant1 I switched to diversity receive and I still could barely hear the signal in either ear. I then switched off diversity, changed back to ant 2. I could hear the signal again. I then switched to diversity while still on ant2 and I could hear the signal well in both ears. It seems like diversity receive is just giving me stereo receive of one antenna, not true diversity receive of both antennas. What could I be doing wrong? Am I missing a setting somewhere? I have the Config/Spkrs set to 2 and I have config/L-Mix-R set to A b. Just for reference, I do not have matched filters in both receivers. Ken NE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Hotmail: Powerful Free email with security by Microsoft. Get it now.http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - 'High Isolation Headphones'
Tom Boucher wrote: Can't really imagine why anyone would need noise-cancelling phones for ham operation Bill Tippet replied: Amplifier blower noise. And, pounding rain on a tin roof in the Caribbean! Ed - W0YK --- Ed Muns Muns Vineyard - www.munsvineyard.com FaceBook - www.facebook.com/munsvineyard __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 DSP AGC Question
Thanks Lyle, Some follow-on questions: 1) When you say The DSP outputs a voltage to control the IF gain of the radio. are you referring to VIFGAIN1 input to U3B on the RF board? 2) Assuming so, is there anything that influences the voltage on VIFGAIN1 other than on behalf of the RF gain pot, and is the voltage appearing at VFGAIN1 on behalf of the RF gain pot processed away from a linear replication of the pot wiper voltage? 3) The hardware AGC appears to have fixed slope, attack and decay constants. What would be the DSP slope and decay config constants to mimic the hardware AGC constants? 4) Is there a table that provides a dBm equivalent of each of the threshold values? Or alternatively are the values on the Clifton Labs site correct? ( 2 -117 dBm 3 -110.5 dBm 4 -105 dBm 5 -103.5 dBm 6 -102.5 dBm 7 -101 dBm 8 -99 dBm) 73, Guy. On Sun, Feb 7, 2010 at 11:10 AM, Lyle Johnson k...@wavecable.com wrote: ...Lyle would have to comment on whether the DSP AGC is developed before or after the IF gain is applied... Assuming ATT and PRE are OFF, hardware AGC voltage begins to have an effect on IF amplifier gain with a signal at the antenna in the region of -60 dBm, plus or minus a few dB. The hardware AGC voltage is developed at the final IF of 15 kHz and applied to the 8.215 MHz IF stage. Its purpose is to prevent the 15 kHz A to D converter at the DSP from being driven beyond its input limits (called over-ranging). The onset of hardware AGC level is influenced by PRE (which increases gain ab out 10 dB, decreasing the signal required at the antenna by the same 10 dB), ATT (which reduces signals by 10 dB, thus increasing the required signal at the antenna), and RF Gain when backed off sufficiently. What is sufficiently? The DSP outputs a voltage to control the IF gain of the radio. This voltage is compared with the hardware AGC voltage, and the higher voltage is applied to reduce the IF gain. If the RF Gain is backed off enough so that the resulting gain control voltage is grater than the hardware AGC voltage derived from the 15 kHz IF signal, then the criterion for sufficiently has been met. The DSP reads the hardware AGC voltage, regardless of the source, and uses the value as part of the S Meter calculation. The DSP AGC algorithm is computed based on the 15 kHz IF signal applied to the DSP's A to D converter. Thus it is after the IF gain is applied. Enjoy! 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - 'High Isolation Headphones'
Other phone contesters in the same room who don't have sidetone (monitor). David G3UNA - Original Message - From: Bill W4ZV btipp...@alum.mit.edu To: elecraft@mailman.qth.net Sent: Sunday, February 07, 2010 6:52 PM Subject: Re: [Elecraft] K3 - 'High Isolation Headphones' Tom Boucher wrote: Can't really imagine why anyone would need noise-cancelling phones for ham operation Amplifier blower noise. 73, Bill -- View this message in context: http://n2.nabble.com/K3-High-Isolation-Headphones-tp4530272p4530474.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - 'High Isolation Headphones'
I have, in previous set-ups used Air-conditioning ducting to help a lot with blower noise by rerouting the air-flow (further) away from the operating position. This also allowed me to situate the amp in a location that would have been otherwise unsuitable due to poor airflow needless to say if anyone else wishes to try this, then please take good care to ensure that the airflow is still more than good enough to provide the required cooling and the duct for the exhaust air can handle the heat. I used an aluminium flexible duct for the exhaust On Sun, 2010-02-07 at 10:52 -0800, Bill W4ZV wrote: Amplifier blower noise. 73, Bill -- 73 Brendan EI6IZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
This is a little off topic as it is not something that might be of great interest to some owners of Elecraft equipment unless they are into software as I am. This reflector seems to be pretty knowledgeable and much more technical than most, so I am posting this to the reflector as there might be a few others here that would find it of interest. Recently I have started learning how to program PIC controllers, partly because I am interested and curious about how it is done and partly because I would like to start building some of my own software controlled radio electronics. I am wondering what language Elecraft uses for programming their radios and what software package they use. I am leaning towards using C in my projects using the Microchip compilers, but I have also looked into the Swordfish basic compiler and the mickoBasic Pro compiler as I know Visual Basic.net very well. I would also be interested in knowing if there are others on the list that have done some PIC programming and what language and software they use or would recommend. Ken Nicely KE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 DSP AGC Question
Some follow-on questions: 1) When you say The DSP outputs a voltage to control the IF gain of the radio. are you referring to VIFGAIN1 input to U3B on the RF board? Yes. 2) Assuming so, is there anything that influences the voltage on VIFGAIN1 other than on behalf of the RF gain pot, and is the voltage appearing at VFGAIN1 on behalf of the RF gain pot processed away from a linear replication of the pot wiper voltage? Without staring at the DSP code to verify the veracity of my reply, I recall that the RF Gain control is the only thing that currently drives the VIFGAIN1 voltage. Subject to change, of course, since it is a DSP firmware function. And yes, the value read from the pot is processed by the DSP on its way to becoming VIFGAIN1. Again, the algorithm applied is subject to change. 3) The hardware AGC appears to have fixed slope, attack and decay constants. What would be the DSP slope and decay config constants to mimic the hardware AGC constants? Correct as to the first, and I think there may be that there are no settings that exactly mimic the HAGC. Their purposes are quite different. To the DSP, influences of the HAGC voltage on the received signal are treated no differently than changes in propagation. 4) Is there a table that provides a dBm equivalent of each of the threshold values? Or alternatively are the values on the Clifton Labs site correct? (2 -117 dBm 3 -110.5 dBm 4 -105 dBm 5 -103.5 dBm 6 -102.5 dBm 7 -101 dBm 8 -99 dBm) There is no available table, and Jack's measurements were accurate at the time they were made for the then-current firmware release. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - workaround solution
Lets see now, getting the AGC settings correct I can understand, except they do not adjust far enough, that I have experienced. Reducing the RF gain like you are using a HQ-129X yep copy that one also, and have done that since day one of owning a K3.. Using a set of headphones that act like a vise on your head, roger that have a pair of David Clarks in the junk box, a pair of Heil prosets, Heil proset plus, and a Yamaha 500 so should be covered there.. I use external amplification by using powered external speakers and plugging the headphones into that jack. And reduce the audio and RF gains to limit distortion.. gotcha And my pet peeve, no APF, so have an external Datong that fills in to some degree for that. All is well .. I think I have it covered except the part of spending 4500 bucks for this radio that does not quite work without all the exotic applications of external accessories to function normally, and has hardware design problems due to use of low current consumption design for a radio that sits on my desktop. If it were not for the superb selectivity under crowded contest conditions can you actually find much use for a K3. In the past 20 or more years there has not been a radio that sensitivity was any problem, the better radios had decent internal noise figures, so unless you need the superb selectivity in contest conditions one would assume a better sounding X brand would be better suited at a much lower cost? One has to take all the comments with two grains of salt no doubt, as some suggest running the AGC setting just opposite of others, some run the NB on to suppress key clicks while my radio generates key clicks with the NB on, some say NR works wonders, I have never found any setting that improves weak signal reception. so who is correct? If you have moved from an ocean hopper to a HQ-129X you were amazed. If you moved from a FT-1000MP to a K3 I bet you were amazed, it all depends on what you came from as to what the K3 delivers in your eyes, Also what is a weak signal, below S5?? to me a weak signal is one that is almost not detectable to the ears, that takes listening to the noise for a slight variation in the noise to detect a signal is even there, try something that weak with your NB or NR on and off or different settings, its all from where we are coming from and our use of the K3. From many comments made and settings suggested one can determine that there are a large number of K3 owners that may not even use the radio. Other radios have problems also, and what they are determine if they effect your operation or not, your liking or not, the great equalizer in all of this besides the superb selectivity is the response to real problems by Elecraft, and the hope that it will be someday fixed, good luck with getting fixes from brand X. Would I sell my K3, not at present, but I also have kept my much modified FT-1000D on the desk and it fills in very nicely, it also has some AGC problems, but no distortion, and some mods to make the AGC much better, key klix mods are effective, reducing the IF gain and a carefully selected roofing filter makes it pretty competitive along with Inrad IF filters. and the cost is a little over 1000 bucks. And no external accessories needed. Yes it has a real second receiver, not as good as the primary but very usable again with some mods, it will also do diversity which I have done since the 90s so you guys raving about divirsity are just a tad late on finding that one. But its no K3 in the close in signal handling capability. Again would not sell my K3. If I were an outsider to the list it would be hard to decipher what is real bugs and what is just operator ignorance posted here. And the way the threads develop to completely out of topic comments, one can also tell that many do not even understand or experience the original question or problem. I think there is a genuine problem that needs to be addressed in the AGC and or DSP or probably the hardware, let that issue be addressed. It comes up again and again so its there, and it should not require external accesories of certain brands or types to operate the K3 properly. these things are as important to the survival of the K3 in the future as is some of the bells and whistles that Sunday users ask for. Merv KH7C A couple days ago I complained about the K3's performance in a CW pileup, with AGC mushing signals together, and the AF limiter restricting overall dynamic range with AGC turned off. Last night in the CW Sprint I took a different approach and it worked wonderfully: LINE OUT from two K3's went to LINE IN of the logging computer's on-board stereo sound card. Sound card line and mixer playback levels were set to maximum. Sensitive headphones were connected to the sound card output through a left/right/both switch. On the K3: config lin out = phones AGC off RF gain/attenuator as low as possible AF gain turned way
[Elecraft] P3 - Date - Price ??
P3 - Date ?? April ? July ? December ? Price ?? 450 ? $700 ? $900 ? Any ROUGH guesses when even preliminary information may be available?? Impatient and saving pennies, 73, de Jim KG0KP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
Swordfish is an excellent product. I've used it for my Z90/91 panadapter and also the Z100 CW/RTTY tuning aid. Jack K8ZOA On 2/7/2010 2:09 PM, Ken Nicely wrote: This is a little off topic as it is not something that might be of great interest to some owners of Elecraft equipment unless they are into software as I am. This reflector seems to be pretty knowledgeable and much more technical than most, so I am posting this to the reflector as there might be a few others here that would find it of interest. Recently I have started learning how to program PIC controllers, partly because I am interested and curious about how it is done and partly because I would like to start building some of my own software controlled radio electronics. I am wondering what language Elecraft uses for programming their radios and what software package they use. I am leaning towards using C in my projects using the Microchip compilers, but I have also looked into the Swordfish basic compiler and the mickoBasic Pro compiler as I know Visual Basic.net very well. I would also be interested in knowing if there are others on the list that have done some PIC programming and what language and software they use or would recommend. Ken Nicely KE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] (no subject)
kd0...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] need more power for x-verter
Hello, I would like to run my XV432 transverter with 100 to 250 mW from the K3 with the transverter-option. Did not find a solution in the handbook. Any good ideas ? Thanks Werner DJ9KH -- Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3.5 - sicherer, schneller und einfacher! http://portal.gmx.net/de/go/atbrowser __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - workaround solution
That is how I have setup my new K3. Line out goes to the PC's realtek HD Audio soundcard that feeds a Bose Companion 3 speaker system. I plugged in a 1/4 to 1/8 stereo adapter into the front phones jack to mute the internal speaker. If I want to use the internal speaker, I can easily turn off the Bose, and pull out the adapter. The only downside (minor), is you don't have a fixed level into the soundcard for digital, but it is easy to adjust. With the AGC off, and tweaking the RF gain, the receiver is super quiet, and the CW tone is incredible. The Bose system has plenty of gain, so no clipping of the audio. I always thought the Omni-V was the best CW radio ever made, but this K3 has taken the throne. On the other side, I still prefer the Mark-V for phone, so I will be keeping it. But for CW, the K3 blows it out of the water. On the K3: config lin out = phones AGC off RF gain/attenuator as low as possible AF gain turned way down (between first two dots). -- View this message in context: http://n2.nabble.com/K3-in-a-cw-pileup-workaround-solution-tp4530279p4531014.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
Frankly, It seems to me that good QRO amps are a glut on the market. (see THP, etc.) To be competitive in that market, any Elecraft offering would have to be highly innovative and I just don't see much more that can be done. IMHO Doug, W6JD K2 #1626 K3 #23 - Original Message - From: sr...@swbell.net To: elecraft@mailman.qth.net Sent: Sunday, February 7, 2010 8:08:37 AM GMT -08:00 US/Canada Pacific Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 YES! That is exactly the question I would like to ask. I very much looked forward to the release a couple of years ago, and now you can't even get a comment from Elecraft about the situation. IMO, QRO is much more important than all these trivial little toys they are building now. I have a much more pressing need for a KPA- than I do a panadapter (with limited features) and a wattmeter. I have a very nice panadapter that has rig control from the computer, and it didn't cost 700 bucks, and I can control it with the MOUSE. Wayne/Eric, how about some comments on this subject. At least tell us what the future holds for the KPAs. I'm holding off buying a new amp till the KPAs are released. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DaveVK Sent: Sunday, February 07, 2010 12:21 AM To: elecraft@mailman.qth.net Subject: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 What happened to the Elecraft Amps? Did they get beyond 'proto: gee I want one' stage? -- View this message in context: http://n2.nabble.com/What-became-of-the-Elecraft-s-KPA1500-and-KPA-800-tp452 8292p4528292.html Sent from the [OT] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2673 - Release Date: 02/07/10 01:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Doug Turnbull wrote: Barry, Sorry but what do you mean by 'high isolation headphones'. Would the Heil Pro-Set Plus do? 73 Doug EI2CN This is what I use to isolate my self from XYL, kid, grandkid, and great grandkid QRM. http://www.extremeheadphones.com/ Works great. Paul N4LCD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
I've done lots and lots of C for the 18F PIC series. The MPLAB IDE that PIC sells works well with the ICD3 programmer / debugger. I think the K3 MCU firmware is in C and probably some ASM, but not sure on the DSP. 73, matt W6NIA On Sun, 07 Feb 2010 14:09:11 -0500, you wrote: This is a little off topic as it is not something that might be of great interest to some owners of Elecraft equipment unless they are into software as I am. This reflector seems to be pretty knowledgeable and much more technical than most, so I am posting this to the reflector as there might be a few others here that would find it of interest. Recently I have started learning how to program PIC controllers, partly because I am interested and curious about how it is done and partly because I would like to start building some of my own software controlled radio electronics. I am wondering what language Elecraft uses for programming their radios and what software package they use. I am leaning towards using C in my projects using the Microchip compilers, but I have also looked into the Swordfish basic compiler and the mickoBasic Pro compiler as I know Visual Basic.net very well. I would also be interested in knowing if there are others on the list that have done some PIC programming and what language and software they use or would recommend. Ken Nicely KE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
As far as I know, no one makes a full 1500 watt output, continuous-duty, no time limit, brick on the key amplifier that covers 160-6 meters with full QSK and instant on. It would be nice to have a built in precision wattmeter, too. I'm sure some would also like an auto-tuner, antenna switch w/ memories, dummy load, monitor scope...etc. It could be optioned just like the K3 so cost could be adjusted to the budget of the buyer... 73 de Greg-N4CC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of westa...@comcast.net Sent: Sunday, February 07, 2010 2:13 PM To: sr...@swbell.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 Frankly, It seems to me that good QRO amps are a glut on the market. (see THP, etc.) To be competitive in that market, any Elecraft offering would have to be highly innovative and I just don't see much more that can be done. IMHO Doug, W6JD K2 #1626 K3 #23 - Original Message - From: sr...@swbell.net To: elecraft@mailman.qth.net Sent: Sunday, February 7, 2010 8:08:37 AM GMT -08:00 US/Canada Pacific Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 YES! That is exactly the question I would like to ask. I very much looked forward to the release a couple of years ago, and now you can't even get a comment from Elecraft about the situation. IMO, QRO is much more important than all these trivial little toys they are building now. I have a much more pressing need for a KPA- than I do a panadapter (with limited features) and a wattmeter. I have a very nice panadapter that has rig control from the computer, and it didn't cost 700 bucks, and I can control it with the MOUSE. Wayne/Eric, how about some comments on this subject. At least tell us what the future holds for the KPAs. I'm holding off buying a new amp till the KPAs are released. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DaveVK Sent: Sunday, February 07, 2010 12:21 AM To: elecraft@mailman.qth.net Subject: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 What happened to the Elecraft Amps? Did they get beyond 'proto: gee I want one' stage? -- View this message in context: http://n2.nabble.com/What-became-of-the-Elecraft-s-KPA1500-and-KPA-800-tp452 8292p4528292.html Sent from the [OT] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2673 - Release Date: 02/07/10 01:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz (Problem Resolved but Questions Remain)
As a follow-up to the e-mails that were sent to the reflector and those that I received privately, I wanted to let the group know that last night I resolved the problem I was having where audio would be lost in LSB, USB and AM when the K3's bandwidth was set to 2.8 kHz while running FW 3.30. As I mentioned yesterday, on Friday I received the DSP upgrade, so before installing it I re-loaded the K3 with FW 3.76. After doing so, the problem remained but now the audio would cut off at a BW of 3.0 kHz, returning at 3.1 kHz in all three modes. The full range of bandwidths available in the CW and DATA modes were unaffected. I replaced the DSP board and the problem remained (as expected). However, when I performed an EE Init, I found that everything began working properly. As soon as I re-loaded my latest configuration file, the problem returned. Unfortunately, my next-newest configuration file was dated August 09 and turned out to be incompatible with 3.76, so I manually re-configured the radio from scratch. All is well now. Thanks to all those who responded. Scott N7NB -Original Message- From: K6LE [mailto:k...@mac.com] Sent: Sunday, February 07, 2010 8:18 AM To: WW2PT Cc: Scott Prather; Elecraft Reflector Subject: Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz Bingo! I restored my last config (from 1/20) and problem is gone.. Now I am trying to noodle over what configuration item may have changed during the beta upgrade that caused it. At any rate, all is good now! Rick K6LE On 2/6/2010, at 11:07 , WW2PT wrote: My K3 was working fine last time I used it. Tonight I turned it on and noticed a similar problem -- no audio in USB or LSB modes whenever I set the width to 3.00 kHz or less. Tried downgrading from 3.76 to 3.63 but no change. Checked all filter settings in the config menu, nothing out of place. All other modes were fine. On a hunch, I restored my last configuration backup file. It worked! Everything seems to be behaving well again. 73 de WW2PT On Feb 6, 2010, at 12:45 AM, Scott Prather wrote: All: This evening when running FW 3.76 I'm seeing a problem with my K3 that I've never seen before. When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth down to 2.8 kHz will result in total loss of audio, even though the S-meter continues to read incoming signal strength. I've tried an EE-Init and reloaded the configuration, but the problem remains. Thinking this might be related to 3.76, I went back to 3.30 and I have exactly the same problem. If I turn on the sub receiver and change its BW using BSET, it loses LSB, USB and AM audio at 2.8 kHz as well. To get audio to return, all I need to do is change the BW to 2.9 kHz or greater on either the main or the sub. Looking through the reflector postings, it looks like someone saw something similar to this in the DATA mode a few months back, and pressing the A/B key would clear it. However, in my case the only way I can restore audio is to change the BW to 2.9 kHz or greater. In the CW and DATA modes, the audio does not drop out at any bandwidth setting. Does anyone have a suggestion as to what might be going on? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
--- On Sun, 2/7/10, Greg n...@cableone.net wrote: From: Greg n...@cableone.net Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 To: elecraft@mailman.qth.net Date: Sunday, February 7, 2010, 2:33 PM As far as I know, no one makes a full 1500 watt output, continuous-duty, no time limit, brick on the key amplifier that covers 160-6 meters with full QSK and instant on. It would be nice to have a built in precision wattmeter, too. I'm sure some would also like an auto-tuner, antenna switch w/ memories, dummy load, monitor scope...etc. It could be optioned just like the K3 so cost could be adjusted to the budget of the buyer... As long as your budget was $10,000. l __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Ham Radio Deluxe
I have Ham Radio Deluxe and DB780 working well at this point on the K3, but maybe I am missing something on the HRD interface. Some of the buttons seem to have incomplete functionality. For example the RIT button does turn RIT on and off on the radio, but there is no slider to adjust it, so it seems pointless? The are other buttons that are similar, so what am I missing? Or is this just a work in progress? I have the latest V5 2434 Kit. I also got the remote to work over IP to the HRD IP server, but it is a bit buggy and the meter and other functions don't work on an IP remote session, that do work on the local HRD connected to the K3 serial port. I will post this on the HRD forum, but maybe someone here has a suggestion. Aside from all that, this K3 is the best CW radio I have ever used. Beyond that, it is just too cool. The features are mostly usable stuff, and not just worthless bells and whistles. And maybe it's just me, but the I don't think the ergonomics are bad considering the limited panel space. I like the Mark-V ergonomics better, but the K3 isn't bad at all. Only 4 days after finishing the K3 build, I already know that I'll be buried with this rig. :) -- View this message in context: http://n2.nabble.com/K3-Ham-Radio-Deluxe-tp4531288p4531288.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 in a cw pileup - needs work
Paul, you aren't old enough! On Feb 7, 2010, at 1:07 PM, p...@n4lcd.com wrote: This is what I use to isolate my self from XYL, kid, grandkid, and great grandkid QRM. - Jack Brindle, W6FB - __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
Back to the original problem. I am pretty sure this is setting somewhere. I have discovered that diversity works fine on 40 meters, but not on 20 and 15. On 40, if I am on diversity and I use and external coax switch on antenna 1 and I switch out (disconnect) the antenna using the external switch, the signal disappears in one ear. If I do the same thing on 20 or 15, the signal disappears from both ears. Any ideas? Ken KE3C On Sun, Feb 7, 2010 at 1:54 PM, Brett Howard br...@livecomputers.comwrote: You can use ANT1 and ANT2 if you have your sub RX plugged into the KAT3 board. Or you can use ANT1 and AUX_RF if you have your SUBRX plugged into the AUX_RF BNC jack. Or you can use RX_ANT and ANT2 or AUX_RF. The RX_ANT port can only be used on the main RX or both RXs at the same time it can't be used on the sub RX only. ~Brett On Sun, 2010-02-07 at 12:37 -0500, Ken Nicely wrote: So does the receive antenna have to be on the aux port of the Receive Ant., IF out board (KXV3A) for diversity, or can it also be on Ant2 of the ATU (KAT3-F)? On Sun, Feb 7, 2010 at 12:17 PM, Bill Johnson k9...@live.com wrote: That should read aux antenna when in b-set *Bill* K9YEQ KX1, K2, K3, THP HL2.5Kfx From: k9...@live.com To: k...@nicelyweb.com; elecraft@mailman.qth.net Date: Sun, 7 Feb 2010 11:15:31 -0600 Subject: Re: [Elecraft] Diversity Recieve Issue Ken, Matching filters is a good thing. You need to have both antennas hooked to the radio. I use the aux antenna for one and the main to antenna one. In bset, you select when pressing the antenna switch. Then I adjust the rf gain for each antenna to give similar output to the line out into my desktop stereo speakers. Bill K9YEQ KX1, K2, K3, THP HL2.5Kfx Date: Sun, 7 Feb 2010 11:49:20 -0500 From: k...@nicelyweb.com To: elecraft@mailman.qth.net Subject: [Elecraft] Diversity Recieve Issue This morning I was listening on 15 meters using ant2 which is hooked to one of my verticals. I switched to ant1 (my second vertical) and I could barely make out the signal. While still set to ant1 I switched to diversity receive and I still could barely hear the signal in either ear. I then switched off diversity, changed back to ant 2. I could hear the signal again. I then switched to diversity while still on ant2 and I could hear the signal well in both ears. It seems like diversity receive is just giving me stereo receive of one antenna, not true diversity receive of both antennas. What could I be doing wrong? Am I missing a setting somewhere? I have the Config/Spkrs set to 2 and I have config/L-Mix-R set to A b. Just for reference, I do not have matched filters in both receivers. Ken NE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Hotmail: Powerful Free email with security by Microsoft. Get it now. http://clk.atdmt.com/GBL/go/201469230/direct/01/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] need more power for x-verter
Werner, That higher level is not available from the KXV3, but 0 dBm (1 mW) is available. I am wondering why you do not plug the XV432 for the -20 to 0 dBm range and operate with the KXV3. You must have reasons other than the K3 for making your choice of input power. The only reason I can think of is that you are also using another (non-Elecraft) transceiver as an IF in addition to the K3. If you are using isolated input/output lines on another other IF transceiver, put a 24 dB attenuator in the transmit IF input to drop the 250 mW level down to 0 dBm. 73, Don W3FPR Werner Hasemann wrote: Hello, I would like to run my XV432 transverter with 100 to 250 mW from the K3 with the transverter-option. Did not find a solution in the handbook. Any good ideas ? Thanks Werner DJ9KH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - Date - Price ??
I am sure they are working on it. They want a great product when it comes out and not get the criticism brought about by not being ready to release. This is a first class co and the few times items were released that required upgrades, etc., I am sure that flies against what they see as their business model. They have had a few dings. If we pressure them enough, we probably won't hear any hints, nor will they release until perfect. 73, Bill K9YEQ K2 KX1 (Field tester); K3; W2; mini mods -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Miller KG0KP Sent: Sunday, February 07, 2010 1:27 PM To: Elecraft Reflector Subject: [Elecraft] P3 - Date - Price ?? P3 - Date ?? April ? July ? December ? Price ?? 450 ? $700 ? $900 ? Any ROUGH guesses when even preliminary information may be available?? Impatient and saving pennies, 73, de Jim KG0KP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Diversity Recieve Issue
Ken, The antenna selection is per band. Set up the other bands just like you have for 40 meters. 73, Don W3FPR Ken Nicely wrote: Back to the original problem. I am pretty sure this is setting somewhere. I have discovered that diversity works fine on 40 meters, but not on 20 and 15. On 40, if I am on diversity and I use and external coax switch on antenna 1 and I switch out (disconnect) the antenna using the external switch, the signal disappears in one ear. If I do the same thing on 20 or 15, the signal disappears from both ears. Any ideas? Ken KE3C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 accessories for sale
I'm going back to QRP and selling my KPA100 and KAT100. The PA and ATU are built into the same EC2 enclosure to match the K2. They are well built (although I say it myself!) and have performed exactly as per spec. As the faithful companions of K2 no 4185 they have netted some good DX, and are arranged so that the K2 can simply unplug from the main station and go portable. I'm looking for £300.00 - and you won't have to wind the toroids! Shipping in the UK will be £9.00, overseas I'll have to find out. If you're interested, you can get me off list at michael.law...@tesco.net. 73 de Mike GW4IQP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K-3 Interface to Ameritron ARI-500
Bob, I use the ARI-500 with my K3 and ALS-500M amp. The pull up resistor mod is incorporated in later K3's. I home brewed a Y connector from the ACC jack on the K3 to the ARI-500. The other leg goes to a com port on my computer for FSK RTTY. Be sure to set up the ARI-500 exactly per the manual. No problems at all.functions as designed. 73, Jim, W0EM -- View this message in context: http://n2.nabble.com/K-3-Interface-to-Ameritron-ARI-500-tp4528035p4531501.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] k3EZ
I downloaded the K3EZ program after reading about it on the net and seeing the web site and showing all it can do. The problem I am running into is once I double click on the EXE file I get a message that reads the application is missing required files and to contact the vender I am running Win XP sp3 and the computer is a AMD 3ghz with 8 gigs of ram. I have NET FRAME 3.5 installed as well. Thanks for any help Mike VE3WDM -- View this message in context: http://n2.nabble.com/k3EZ-tp4531452p4531452.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
I think the K3 MCU firmware is in C and probably some ASM, but not sure on the DSP. The DSP code is written entirely in assembly language. Don't ask how I know... :-) 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K144XV
I would appreciate hearing the opinion of members of this group on an issue I am facing. I just downloaded the manual for the K144XV since I am considering this upgrade. As I understand it, it is an all mode ten watt transceiver, and it costs about $300.00. In order to use it, I will also have to buy a KXV3A for $140.00 and a KFL3B-FM for $126.00. For a total of $560.00, I will have access to two meters with my K3. I will also be able to listen to frequencies outside of the amateur bands. I am wondering (and this is what I need your opinions on) why this would be a better buy for me than another transceiver dedicated to VHF and UHF and putting out considerably more power? In other words, what are the benefits and uses of me purchasing this option (these options) for my K3? I appreciate your comments. Thanks and 73, Ci Ci Jones, WU7R K3/100, K2/100 and K1/4 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2: winding T5
Hi all, I'm at the point of winding T5 and have a question about whether I have it wound correctly. In particular, it seems like the step-down winding (the 4 turns of green wire) can't be perfectly centered over the other winding (the 16 turns of red wire). I.e. if you start counting turns on the 16-turn coil from one side, the first pass through the core of the 4-turn winding occurs between winding 6 and 7. If you start counting turns from the other side, the first pass of the 4-turn winding occurs between windings 7 and 8. Does this sound like it's wound right? I can't see any other way to wind the xformer without this being the case. It's symmetrical if I turn it over - i.e. if I flip it, the 4-turn winding is off to the other side by 1. if this is wound right, does it matter which way it's installed? i.e. which leads are 1/2 and 3/4? The manual doesn't specify so I'm assuming it doesn't. But this is a little bit of a Rubik's cube type of puzzle for me I guess ;) Thanks, LS -- View this message in context: http://n2.nabble.com/K2-winding-T5-tp4531587p4531587.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
I've been wondering when someone would raise trhis point! It struck me too it was an expensive way of getting on 2meters. On a similar note, I query the desirability of having everything in one box In general a universal tool is seldom as good as one made for a specific job. Moreover, two meters may be something to have on in the backround while using the normal HF bands in the usual way. However my problems at the moment are with the K3, gone very unreliable, loses lock with the VCO without warning and apart from watching the external output meter I canot tell is I am transmitting Elecraft Tech advice to date is not helping much. If I knew how to put a big smiley on here (Frowning of course) I would do it! 73David, VK3DBD currently not a happy K3 User On Sun, Feb 7, 2010 at 11:07 PM, Ci Jones b...@aol.com wrote: I would appreciate hearing the opinion of members of this group on an issue I am facing. I just downloaded the manual for the K144XV since I am considering this upgrade. As I understand it, it is an all mode ten watt transceiver, and it costs about $300.00. In order to use it, I will also have to buy a KXV3A for $140.00 and a KFL3B-FM for $126.00. For a total of $560.00, I will have access to two meters with my K3. I will also be able to listen to frequencies outside of the amateur bands. I am wondering (and this is what I need your opinions on) why this would be a better buy for me than another transceiver dedicated to VHF and UHF and putting out considerably more power? In other words, what are the benefits and uses of me purchasing this option (these options) for my K3? I appreciate your comments. Thanks and 73, Ci Ci Jones, WU7R K3/100, K2/100 and K1/4 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - Date - Price ??
Any ROUGH guesses when even preliminary information may be available?? Impatient and saving pennies, I'd suggest some relaxation therapy. A glass or two of fine peaty Islay single malt and perhaps a fine hand rolled cigar from the Aficionado top 10 list. This variety of aromatherapy comes highly recommended, even though it isn't always spouse friendly, if that's a consideration. Neither (if they're any good) will save you pennies -- but, they're pennies well allocated :-) . Grant/NQ5T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft K3 utility - RS-232 port speed?
I have downloaded the Elecraft K3 utility and have it running on my Ubuntu computer. The utility communicates with the K3 and sees the firmware version I presently have as 2.7. Right now the serial port speed on my computer is 9600 baud. However, I can't find a recommended port speed to use for the firmware upgrade in the K3 utility documentation. Can someone clue me in? Bob K4ERR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - Date - Price ??
I scored an LP-PAN for $135 on EBay, and already have a secondary ProSonus Firewire soundcard, so my panadaptor needs are met. That said, a dedicated unit like the P3 looks very nice. I will guess $600. :) A wild guess.. -- View this message in context: http://n2.nabble.com/P3-Date-Price-tp4530650p4531642.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
Lyle Johnson wrote: The DSP code is written entirely in assembly language. Don't ask how I know... :-) You ... indeed ... are dedicated!! One FFT in assembly is enough to provide serious headaches. 73, Fred K6DGW Auburn CA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
However my problems at the moment are with the K3, gone very unreliable, loses lock with the VCO without warning and apart from watching the external output meter I canot tell is I am transmitting Elecraft Tech advice to date is not helping much. I'd suggest you get back in touch with tech support. Something doesn't sound at all right here, especially about his comment regarding Elecraft tech support. Perhaps if you described your issues in detail, there might be some help around here. How long have you had the radio? And was it working fine at one time? Grant/NQ5T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - Date - Price ??
I'd still really like to hear a price... And another projected date. If its missed so be it but at least another point in time and a ballpark price point would go a long way I think. ~Brett On Sun, 2010-02-07 at 17:37 -0600, Grant Youngman wrote: Any ROUGH guesses when even preliminary information may be available?? Impatient and saving pennies, I'd suggest some relaxation therapy. A glass or two of fine peaty Islay single malt and perhaps a fine hand rolled cigar from the Aficionado top 10 list. This variety of aromatherapy comes highly recommended, even though it isn't always spouse friendly, if that's a consideration. Neither (if they're any good) will save you pennies -- but, they're pennies well allocated :-) . Grant/NQ5T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
If you have the sub-receiver (and are willing to purchase 2 FM filters) then you've got the ability to do diversity on 2 meters if you so wish. You can also have the K3 doing dual VFO listen. Such as using the main VFO down on the HF bands while the sub RX monitors a local repeater... ~Brett On Sun, 2010-02-07 at 18:07 -0500, Ci Jones wrote: I would appreciate hearing the opinion of members of this group on an issue I am facing. I just downloaded the manual for the K144XV since I am considering this upgrade. As I understand it, it is an all mode ten watt transceiver, and it costs about $300.00. In order to use it, I will also have to buy a KXV3A for $140.00 and a KFL3B-FM for $126.00. For a total of $560.00, I will have access to two meters with my K3. I will also be able to listen to frequencies outside of the amateur bands. I am wondering (and this is what I need your opinions on) why this would be a better buy for me than another transceiver dedicated to VHF and UHF and putting out considerably more power? In other words, what are the benefits and uses of me purchasing this option (these options) for my K3? I appreciate your comments. Thanks and 73, Ci Ci Jones, WU7R K3/100, K2/100 and K1/4 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft K3 utility - RS-232 port speed?
The K3 Utility finds the K3 at the speed it is set to (see the K3 CONFIG menu, RS232). It does this by polling at all four of the supported K3 speeds. During firmware load the K3 Utility changes the speed to 38400 bps and then restores it to the original speed after a successful firmware load. It's not described in great detail because you don't need to do anything to pick any particular speed. Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of rrkrr Sent: Sunday, February 07, 2010 3:44 PM To: Elecraft Reflector Subject: [Elecraft] Elecraft K3 utility - RS-232 port speed? I have downloaded the Elecraft K3 utility and have it running on my Ubuntu computer. The utility communicates with the K3 and sees the firmware version I presently have as 2.7. Right now the serial port speed on my computer is 9600 baud. However, I can't find a recommended port speed to use for the firmware upgrade in the K3 utility documentation. Can someone clue me in? Bob K4ERR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Utility program issue
The K3 Utility closes the serial port handle (using the Win32 CloseHandle API call) when the program exits. I just verified this (again) with a debugger breakpoint. Windows Process termination also closes all file handles that the program opens. However the actual release of the hardware for subsequent program access involves the USB to Serial adapter's device driver, which is specific to your hardware. This is why some users have no difficulty with this and others may. I'm not sure what else I could beyond making sure that the program closes the serial port. Which it does. Honest... Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wes Stewart Sent: Saturday, February 06, 2010 9:09 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Utility program issue I've been meaning to query the group about this for some time but the latest episode has finally prodded me into asking. I have noted before that when I ran the utility program after closing it and then trying to use my logging program, the log couldn't connect using the serial port. Apparently the utility wasn't releasing the serial port after having used it. Windows Task Manager would not show that the utility was still running, but it would take a reboot to fix the issue. Not only that, but Windows wouldn't shut down normally because it thought the utility was still running and wasn't responding. I would have to tell it to go ahead and close the utility. Last night afte reading one of the threads on this reflector I decided to read the release notes using the utility. The K3 wasn't even turned on and I obviously didn't try to address it with the program. After reading the notes, I closed the program, decided to go to bed, started the Windows shut down and left the room. This morning I came in and discovered that the computer was still up, didn't think much of it until I tried to open the logging program and got the I can't connect to the radio error. So even though I never used it, the utility apparently captured the serial port and I had to go through the whole process of manually shutting down Windows to get back to normal. For the record, I'm running a Lenovo T400 with WinXP Pro SP3 and a Quatech USB-Serial interface. Anyone else have this problem? Wes N7WS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
That is one sure way to measure and control CPU cycle usage. Thought so. matt On Sun, 07 Feb 2010 15:12:20 -0800, you wrote: I think the K3 MCU firmware is in C and probably some ASM, but not sure on the DSP. The DSP code is written entirely in assembly language. Don't ask how I know... :-) 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
As long as your budget was $10,000. :) I think I will continue to turn bandswitch, roller inductor and air-cap knobs, and use the other $9000 for other stuff. -- View this message in context: http://n2.nabble.com/What-became-of-the-Elecraft-s-KPA1500-and-KPA-800-tp4528292p4531787.html Sent from the [OT] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
As far as I know, no one makes a full 1500 watt output, continuous-duty, no time limit, brick on the key amplifier that covers 160-6 meters with full QSK and instant on. It would be nice to have a built in precision wattmeter, too. I mostly operate barefoot, but when I need an amp I find that first 500-600 watts makes a big difference. So I'd like a 500-600 watt amp, full QSK, 160-6 meters with auto band switching when connected to the K3. Use a separate switching power supply to keep everything lightweight so it is easy to take places with you. And keep the autotuner and precision power meter separate as well. Phil - AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
That just ain't gonna happen with a solid state amp. Spend $5K for an Alpha with a pair of 4CX1000A's which will do brick on the key all day and night or the same $5K on an amp that can't (THP 2.5K)? I would encourage Elecraft to drop the whole idea unless they can build and sell an Alpha Class amp for less. Greg wrote: As far as I know, no one makes a full 1500 watt output, continuous-duty, no time limit, brick on the key amplifier that covers 160-6 meters with full QSK and instant on. It would be nice to have a built in precision wattmeter, too. I'm sure some would also like an auto-tuner, antenna switch w/ memories, dummy load, monitor scope...etc. It could be optioned just like the K3 so cost could be adjusted to the budget of the buyer... 73 de Greg-N4CC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of westa...@comcast.net Sent: Sunday, February 07, 2010 2:13 PM To: sr...@swbell.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 Frankly, It seems to me that good QRO amps are a glut on the market. (see THP, etc.) To be competitive in that market, any Elecraft offering would have to be highly innovative and I just don't see much more that can be done. IMHO Doug, W6JD K2 #1626 K3 #23 - Original Message - From: sr...@swbell.net To: elecraft@mailman.qth.net Sent: Sunday, February 7, 2010 8:08:37 AM GMT -08:00 US/Canada Pacific Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 YES! That is exactly the question I would like to ask. I very much looked forward to the release a couple of years ago, and now you can't even get a comment from Elecraft about the situation. IMO, QRO is much more important than all these trivial little toys they are building now. I have a much more pressing need for a KPA- than I do a panadapter (with limited features) and a wattmeter. I have a very nice panadapter that has rig control from the computer, and it didn't cost 700 bucks, and I can control it with the MOUSE. Wayne/Eric, how about some comments on this subject. At least tell us what the future holds for the KPAs. I'm holding off buying a new amp till the KPAs are released. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DaveVK Sent: Sunday, February 07, 2010 12:21 AM To: elecraft@mailman.qth.net Subject: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 What happened to the Elecraft Amps? Did they get beyond 'proto: gee I want one' stage? -- R. Kevin Stover ACØH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: winding T5
LS, You have it wound correctly. The orientation is indicated on the next page of the manual - Figure 6-16 shows the lead numbering, and it is critical. 73, Don W3FPR lstavenhagen wrote: Hi all, I'm at the point of winding T5 and have a question about whether I have it wound correctly. In particular, it seems like the step-down winding (the 4 turns of green wire) can't be perfectly centered over the other winding (the 16 turns of red wire). I.e. if you start counting turns on the 16-turn coil from one side, the first pass through the core of the 4-turn winding occurs between winding 6 and 7. If you start counting turns from the other side, the first pass of the 4-turn winding occurs between windings 7 and 8. Does this sound like it's wound right? I can't see any other way to wind the xformer without this being the case. It's symmetrical if I turn it over - i.e. if I flip it, the 4-turn winding is off to the other side by 1. if this is wound right, does it matter which way it's installed? i.e. which leads are 1/2 and 3/4? The manual doesn't specify so I'm assuming it doesn't. But this is a little bit of a Rubik's cube type of puzzle for me I guess ;) Thanks, LS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
Why are we adding the price of the FM filter to the K144XV? There are SSB and CW modes on 2 meters. One alternative is the external XV144 (or any other 2 meter transverter). If that transverter were chosen, AND you wanted to change the crystal to cover the FM frequencies, the FM filter would still be required for the K3. Since most 2 meter FM is repeater work, I don't think diversity mode is a benefit, so why even consider 2 FM filters. 73, Don W3FPR Brett Howard wrote: If you have the sub-receiver (and are willing to purchase 2 FM filters) then you've got the ability to do diversity on 2 meters if you so wish. You can also have the K3 doing dual VFO listen. Such as using the main VFO down on the HF bands while the sub RX monitors a local repeater... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: winding T5
Hi Don, Ok, thanks. So which way should it go in? I.e. should leads 1 and 3 be where the last winding of the 4-turn (lead 3) be the side where it's between turns 6 and 7 of the 16 turn coil or the side where it's between 7 and 8 (and the inverse for leads 2 and 4)? It's different depending on how I have the xformer flipped. Also, why isn't this specified? Looks like most of the rest of the transformers have this situation and I don't see the orientation specified for those either. Thanks, LS -- View this message in context: http://n2.nabble.com/K2-winding-T5-tp4531587p4531870.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
Unfortunately, there is no way to operate diversity on 2M with the K3 and a K144XV. The is no way to operate both the Main and Sub RX on 2M at the same time. You could put an FM filter in both the Main and Sub RX so you can use the K144XV through either one, not both at the same time. And as Don said, there is considerable use for the K144XV on SSB, CW and digital modes. At 2/7/2010 08:34 PM, Don Wilhelm wrote: Why are we adding the price of the FM filter to the K144XV? There are SSB and CW modes on 2 meters. One alternative is the external XV144 (or any other 2 meter transverter). If that transverter were chosen, AND you wanted to change the crystal to cover the FM frequencies, the FM filter would still be required for the K3. Since most 2 meter FM is repeater work, I don't think diversity mode is a benefit, so why even consider 2 FM filters. 73, Don W3FPR Brett Howard wrote: If you have the sub-receiver (and are willing to purchase 2 FM filters) then you've got the ability to do diversity on 2 meters if you so wish. You can also have the K3 doing dual VFO listen. Such as using the main VFO down on the HF bands while the sub RX monitors a local repeater... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
Why are we adding the price of the FM filter to the K144XV? There are SSB and CW modes on 2 meters. Perhaps not everyone is aware of this :-) Or perhaps there is just some general misunderstanding of when the 2M option on the k3 makes perfectly good sense, and when a bit of multi-band plastic with a ducky, belt clip and other fol-de-rol makes a lot more sense ... Since most 2 meter FM is repeater work, I don't think diversity mode is a benefit, so why even consider 2 FM filters. I can't imagine why diversity on FM would seem the least bit logical. Grant/NQ5T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
At 2/7/2010 08:50 PM, Grant Youngman wrote: Why are we adding the price of the FM filter to the K144XV? There are SSB and CW modes on 2 meters. Perhaps not everyone is aware of this :-) Or perhaps there is just some general misunderstanding of when the 2M option on the k3 makes perfectly good sense, and when a bit of multi-band plastic with a ducky, belt clip and other fol-de-rol makes a lot more sense ... Since most 2 meter FM is repeater work, I don't think diversity mode is a benefit, so why even consider 2 FM filters. I can't imagine why diversity on FM would seem the least bit logical. Some repeaters use voting receivers to overcome holes in antenna patterns. And with voting receivers, they don't mix the signals, they select the best one. Not really diversity and it is not something that is of much use at the typical user end. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: winding T5
LS, I don't understand your confusion - the lead numbers are clearly silkscreened on the board, just match them up. If the silkscreen on your board is sub-standard, refer to the parts placement diagram at the back of the manual or the board images available at Tom Hammond's website www.n0ss.net. For 'beauty', orient it with the yellow side up. 73, Don W3FPR lstavenhagen wrote: Hi Don, Ok, thanks. So which way should it go in? I.e. should leads 1 and 3 be where the last winding of the 4-turn (lead 3) be the side where it's between turns 6 and 7 of the 16 turn coil or the side where it's between 7 and 8 (and the inverse for leads 2 and 4)? It's different depending on how I have the xformer flipped. Also, why isn't this specified? Looks like most of the rest of the transformers have this situation and I don't see the orientation specified for those either. Thanks, LS No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2673 - Release Date: 02/07/10 02:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: winding T5
Hi Don, I'm talking about how the small winding isn't exactly centered within the big winding, it's offset towards one end of the big winding by one turn. I'm only wondering if it matters which end of the big winding it should be offset to (i.e. the lead 1 end or lead 2 end) - it differs if you flip the xformer over. But it sounds like that part doesn't matter, as long as I follow the rest of the diagram which is clear. I'll solder 'er in after the superbowl ;) Thanks Don, LS -- View this message in context: http://n2.nabble.com/K2-winding-T5-tp4531587p4531979.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
I was considering 2 FM filters so that one could TX with one while listening on the SubRX on the other... ~Brett On Sun, 2010-02-07 at 20:34 -0500, Don Wilhelm wrote: Why are we adding the price of the FM filter to the K144XV? There are SSB and CW modes on 2 meters. One alternative is the external XV144 (or any other 2 meter transverter). If that transverter were chosen, AND you wanted to change the crystal to cover the FM frequencies, the FM filter would still be required for the K3. Since most 2 meter FM is repeater work, I don't think diversity mode is a benefit, so why even consider 2 FM filters. 73, Don W3FPR Brett Howard wrote: If you have the sub-receiver (and are willing to purchase 2 FM filters) then you've got the ability to do diversity on 2 meters if you so wish. You can also have the K3 doing dual VFO listen. Such as using the main VFO down on the HF bands while the sub RX monitors a local repeater... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
On Sun, 2010-02-07 at 14:09 -0500, Ken Nicely wrote: ... Recently I have started learning how to program PIC controllers, partly because I am interested and curious about how it is done and partly because I would like to start building some of my own software controlled radio electronics. I am wondering what language Elecraft uses for programming their radios and what software package they use. The P3 firmware is written almost entirely in C. (There are just a few snippets of assembly here and there to get precise timing pulses, etc.) When I started the project, I was assuming that I'd have to re-write major portions of the code in assembly to get the desired performance, but we're getting 20 Hz display update rates just using Microchip's free evaluation version of their C compiler which has optimization disabled. So there's plenty of room for improvement in the future for added features or better performance. I've been pleased with the Microchip integrated development environment (IDE). It is quite powerful, easy to use and free. I believe the same IDE is used for all their processors, from simple 8-bit devices in 8-pin DIP packages up to their 32-bit processor line in 100-pin QFPs. They have lots of useful application notes and documentation on their web site. When I post questions to their on-line tech support I generally receive a useful reply from a knowledgeable person within a day or two (including questions on the C compiler that I didn't even pay for!) They have even replied by telephone a couple times. They also have an on-line user forum that I have found helpful. Alan N1AL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
... I am wondering what language Elecraft uses for programming their radios and what software package they use. The P3 firmware is written almost entirely in C. I wrote the PIC code for the KDVR3 entirely in C using the Microchip compiler. 73, Lyle KK7P FWIW, I wrote the code for the AVR microcontroller in the KDSP2 in C, while the DSP code for the KDSP2 is written in assembler. That DSP source code is open source, available for download on the Elecraft website, and has been since 2003. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
To be inovative, they could make it a full kit, or some assembly required like the K3. I think a full kit would be a little daunting for most of us, so the 2nd option would be better. It/they have a lot of wiz-bang automatic control and proably a lot of surface mount circuitry. It has a built in tuner and I thought that was pretty inovative. There aren't too many amps on the market with built in tuners. AND, it would be Elecraft quality and would match the other Elecraft equipment. Stan Rife W5EWA From: westa...@comcast.net [mailto:westa...@comcast.net] Frankly, It seems to me that good QRO amps are a glut on the market. (see THP, etc.) To be competitive in that market, any Elecraft offering would have to be highly innovative and I just don't see much more that can be done. IMHO Doug, W6JD K2 #1626 K3 #23 - Original Message - From: sr...@swbell.net YES! That is exactly the question I would like to ask. I very much looked forward to the release a couple of years ago, and now you can't even get a comment from Elecraft about the situation. IMO, QRO is much more important than all these trivial little toys they are building now. I have a much more pressing need for a KPA- than I do a panadapter (with limited features) and a wattmeter. I have a very nice panadapter that has rig control from the computer, and it didn't cost 700 bucks, and I can control it with the MOUSE. Wayne/Eric, how about some comments on this subject. At least tell us what the future holds for the KPAs. I'm holding off buying a new amp till the KPAs are released. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net What happened to the Elecraft Amps? Did they get beyond 'proto: gee I want one' stage? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
That is exactly what they designed Greg. It didn't have scope capability, and I am not sure about the dummy load. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Greg As far as I know, no one makes a full 1500 watt output, continuous-duty, no time limit, brick on the key amplifier that covers 160-6 meters with full QSK and instant on. It would be nice to have a built in precision wattmeter, too. I'm sure some would also like an auto-tuner, antenna switch w/ memories, dummy load, monitor scope...etc. It could be optioned just like the K3 so cost could be adjusted to the budget of the buyer... 73 de Greg-N4CC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of westa...@comcast.net Sent: Sunday, February 07, 2010 2:13 PM To: sr...@swbell.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 Frankly, It seems to me that good QRO amps are a glut on the market. (see THP, etc.) To be competitive in that market, any Elecraft offering would have to be highly innovative and I just don't see much more that can be done. IMHO Doug, W6JD K2 #1626 K3 #23 - Original Message - From: sr...@swbell.net To: elecraft@mailman.qth.net Sent: Sunday, February 7, 2010 8:08:37 AM GMT -08:00 US/Canada Pacific Subject: Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 YES! That is exactly the question I would like to ask. I very much looked forward to the release a couple of years ago, and now you can't even get a comment from Elecraft about the situation. IMO, QRO is much more important than all these trivial little toys they are building now. I have a much more pressing need for a KPA- than I do a panadapter (with limited features) and a wattmeter. I have a very nice panadapter that has rig control from the computer, and it didn't cost 700 bucks, and I can control it with the MOUSE. Wayne/Eric, how about some comments on this subject. At least tell us what the future holds for the KPAs. I'm holding off buying a new amp till the KPAs are released. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DaveVK Sent: Sunday, February 07, 2010 12:21 AM To: elecraft@mailman.qth.net Subject: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800 What happened to the Elecraft Amps? Did they get beyond 'proto: gee I want one' stage? -- View this message in context: http://n2.nabble.com/What-became-of-the-Elecraft-s-KPA1500-and-KPA-800-tp452 8292p4528292.html Sent from the [OT] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2673 - Release Date: 02/07/10 01:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2673 - Release Date: 02/07/10 01:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: winding T5
LS, Yes, it does not matter if it is not exactly centered - close is good enough. The toroid core provides the coupling required. 73, Don W3FPR lstavenhagen wrote: Hi Don, I'm talking about how the small winding isn't exactly centered within the big winding, it's offset towards one end of the big winding by one turn. I'm only wondering if it matters which end of the big winding it should be offset to (i.e. the lead 1 end or lead 2 end) - it differs if you flip the xformer over. But it sounds like that part doesn't matter, as long as I follow the rest of the diagram which is clear. I'll solder 'er in after the superbowl ;) Thanks Don, LS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
Alpha 8410 - $5K, but you have to tune it, and your grandchildren will, because it will outlast you. Alpha 9500 - $8K, and you will still be dead while it still works, but the grandchildren don't have to tune it at all. Pretty boring for them. :) The fact is, for people that have the money, it will be hard to convince them not to buy an Alpha 9500. It is the amp most of us would love to have. At the same time, I can get full legal power out of my Henry that was made in the 60's. It just takes turning knobs. :) Spend $5K for an Alpha with a pair of 4CX1000A's which will do brick on the key all day and night or the same $5K on an amp that can't (THP 2.5K)? I would encourage Elecraft to drop the whole idea unless they can build and sell an Alpha Class amp for less. -- View this message in context: http://n2.nabble.com/What-became-of-the-Elecraft-s-KPA1500-and-KPA-800-tp4528292p4532117.html Sent from the [OT] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What became of the Elecraft's KPA1500 and KPA 800
Ah, I don't think so. They were going to be a little less than half that, if my memory serves me correctly. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob - W0GI As long as your budget was $10,000. :) I think I will continue to turn bandswitch, roller inductor and air-cap knobs, and use the other $9000 for other stuff. -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
If you're doing FM it would be cheaper just to get a second cheap, used, FM 2 meter transceiver. Actually, I have four different ways to transmit/receive FM on 2 meters and I hardly ever do it (Yaesu HT, two FT-7800R rigs, and my Icom 706). The HT just sits on the bookshelf for decoration, one FT-7800R in the truck and one in the shack, and the Icom 706 is in the truck (but, never buy the 706 just to do FM, it is not worth it). 73, phil, K7PEH On Feb 7, 2010, at 6:24 PM, Brett Howard wrote: I was considering 2 FM filters so that one could TX with one while listening on the SubRX on the other... ~Brett On Sun, 2010-02-07 at 20:34 -0500, Don Wilhelm wrote: Why are we adding the price of the FM filter to the K144XV? There are SSB and CW modes on 2 meters. One alternative is the external XV144 (or any other 2 meter transverter). If that transverter were chosen, AND you wanted to change the crystal to cover the FM frequencies, the FM filter would still be required for the K3. Since most 2 meter FM is repeater work, I don't think diversity mode is a benefit, so why even consider 2 FM filters. 73, Don W3FPR Brett Howard wrote: If you have the sub-receiver (and are willing to purchase 2 FM filters) then you've got the ability to do diversity on 2 meters if you so wish. You can also have the K3 doing dual VFO listen. Such as using the main VFO down on the HF bands while the sub RX monitors a local repeater... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
