Re: [Elecraft] Frequency reference for the K3 directly off a GPS
Hi Sverre, This type of 10 MHz output has short term stability problems and isn't suitable for direct drive of a K3 (imho). It *could* be used, if integrated over a long time constant (thinking many seconds) to drive a D.O., but that would take additional circuitry. It might be quite a project. You're probably better off with A GPSDO or a Rubidium source. Even a plain OCXO would work if you can keep it calibrated. 73, matt W6NIA On Thu, 13 Aug 2015 06:36:31 -0700 (MST), you wrote: Some recent GPS modules (ublox Neo 7) have a programmable output that in addition to the 1 pps output can be programmed even to output 10 MHz. This output has a lot of jitter as it seems to be derived from a 48 MHz clock which is divided down in such a way as to generate a mix of short and long cycles but so that the average frequency is maintained accurately at 10 MHz. A description can be found here https://sites.google.com/site/g4zfqradio/u-blox_neo-6-7 and performance is partly described here: https://www.febo.com/pipermail/time-nuts/2014-August/086257.html My question is regarding the K3 external reference input. Is this source good enough to drive the K3 reference? Can the K3 clean up the jitter internally, or does the K3 require a source with much less phase noise? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html Matt Zilmer, W6NIA -- Always store beer in a dark place. -R. Heinlein __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Frequency reference for the K3 directly off a GPS
Some recent GPS modules (ublox Neo 7) have a programmable output that in addition to the 1 pps output can be programmed even to output 10 MHz. This output has a lot of jitter as it seems to be derived from a 48 MHz clock which is divided down in such a way as to generate a mix of short and long cycles but so that the average frequency is maintained accurately at 10 MHz. A description can be found here https://sites.google.com/site/g4zfqradio/u-blox_neo-6-7 and performance is partly described here: https://www.febo.com/pipermail/time-nuts/2014-August/086257.html My question is regarding the K3 external reference input. Is this source good enough to drive the K3 reference? Can the K3 clean up the jitter internally, or does the K3 require a source with much less phase noise? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Frequency-reference-for-the-K3-directly-off-a-GPS-tp7606275.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3S Power Up Audio Pop
If you want the keep it simple answer just put a 6v dpdt relay in a box and run l and r audio thru the normally open contacts. Put a 100uf cap across the coil. Put a resistor equal to the resistance of the coil in series. Connect the other end of the resistor to the 12v switched output of the k3 You might need a larger cap Russ kd4jo Sent from my T-Mobile 4G LTE Device Original message From: Jim Brown j...@audiosystemsgroup.com Date:08/13/2015 12:22 PM (GMT-05:00) To: elecraft@mailman.qth.net Cc: Subject: Re: [Elecraft] K3S Power Up Audio Pop On Thu,8/13/2015 9:04 AM, David Ahrendts wrote: Audio experts: I have a pair of AudioEngine 2 powered speakers servicing my beautiful new K3S (an excellent combo). On K3S power up and power down, there is pretty major audio surge pop that, I am sure, is not healthy long-term for the powered speakers. Can anyone suggest a small speaker connection modification to prevent or lessen that power up pop? It occurs to me the simplest thing to do is to power up the K3S and then power up the speakers. A couple of observations. First, I doubt that powered speakers are needed -- I'm happy with non-powered speakers with my K3, and Elecraft says that the audio output stage in the K3S has been beefed up. Second, good audio practice is to turn down the gain on the speakers as far as practical and set the line level out of the K3S to get the sound level that you want. Third, yes, turning the speakers on after the K3S would also solve it, but you may not need to worry about that if you've set levels as above. And finally -- powered speakers are notorious for RF susceptibility. 73, Jim K9YC __ 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 Message delivered to mundschen...@msn.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Frequency reference for the K3 directly off a GPS
I am aware that a GPSDO etc is fine. But is it overkill for the K3? What I am trying to determine is the minimum requirement for the oscillator that will drive the K3's external reference input. The documentation says that the K3's phase stability is not affected by the external reference. That, too me, sounds as if there is some internal averaging or whatever in place already. Matt Zilmer-3 wrote You're probably better off with A GPSDO or a Rubidium source. Even a plain OCXO would work if you can keep it calibrated. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Frequency-reference-for-the-K3-directly-off-a-GPS-tp7606275p7606283.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 Message delivered to arch...@mail-archive.com
[Elecraft] Dual SYNTHESIZER installation with optional CAT scan.
The photographic trail on my Flickr account here: https://www.flickr.com/photos/ak5x/albums/72157657206930935 https://www.flickr.com/photos/ak5x/albums/72157657206930935 73. Bill-AK5X K3 SN 0069 __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Audio/noise diversity/phasing question
I've read where a received signal is split into two signal paths, the noise is somehow shifted 180 degrees (not sure how without affecting the desired signal), the two signals are fed to your headset, one to each side, somehow our brains then perceive the signal to POP out of the noise. Does this apply to the K3/S ? I'm very interested in anything that effectively results in a higher signal to noise. Thanks in advance. Jerry Moore, Future K3S owner 5Sept2015 AE4PB __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Audio/noise diversity/phasing question
Read about AFX in the K3 or K3S manual. 73, Guy K2AV On Thursday, August 13, 2015, ae...@carolinaheli.com wrote: I've read where a received signal is split into two signal paths, the noise is somehow shifted 180 degrees (not sure how without affecting the desired signal), the two signals are fed to your headset, one to each side, somehow our brains then perceive the signal to POP out of the noise. Does this apply to the K3/S ? I'm very interested in anything that effectively results in a higher signal to noise. Thanks in advance. Jerry Moore, Future K3S owner 5Sept2015 AE4PB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net javascript:; This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k2av@gmail.com javascript:; -- Sent via Gmail Mobile on my iPhone __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] New P3 TX Monitor....unusual behavior with SWR (at times)
I had a similar problem -- even at low power levels, the W2 would periodically spike a high-SWR and even show 2-3 bars of SWR when no signal was present. I swapped out the 8-pin cable connecting the sensor to the W2 and the problem went away. I re-crimped the connectors on the original cable, but haven't yet swapped it back in to see if doing so fixed the problem. On Wed, 12 Aug 2015, Randy Farmer wrote: I find this thread quite interesting. I too have been dealing with VSWR spurts. My TX lineup is similar to Phil's, but I don't have the TX Monitor. After a recent station rewiring job I found I was having a great deal of trouble with indicated VSWR jumping to high levels with the amplifier on. The problem was especially bad on 80 meters -- anything above about 300W would randomly give a high VSWR fault on the KAT500. Since the KPA500 was feeding the suddenly changed load it too would usually fault out. The sensor for my LP-100A is on the antenna side of the KAT500, and its VSWR indication was rock solid during these events. My station is in an extremely difficult RFI environment, with seven antennas crammed onto a 0.2 acre city lot. I immediately suspected that common mode RF was getting into the reverse power sensor circuit in the KAT500. I installed a Balun Designs choke on the antenna side of the LP-100A sensor and the KAT500 stopped giving the high VSWR indications right away. That's the good news. The bad news is that now the KPA500 is doing it, but at considerably higher power levels. I can run around 400W out before the KPA500 begins to randomly show VSWR faults. The KAT500 is completely stable at full power. For now, I'm living with this situation. So I would suggest the troubles you're seeing may be the result of common mode RF problems on the transmitter feedline. It could be that the addition of the extra electrical length of the TX Monitor sensor and its associated cabling changed things just enough to put a common mode voltage node near the KAT500 output port. You might try adding an additional piece of coax somewhere in the lineup and see if that changes the situation. RF is funny stuff. 73... Randy, W8FN On 8/12/2015 10:10 AM, Phil Hystad wrote: Mike, Thanks for the comment. I only have one K3 with one P3. My configuration is: K3/P3 — KPA500 — TX Mon Sensor — LP100A Sensor — KAT500 — 80-meter Dipole I first noticed the spike with the RED LEDs on both the KAT500 and the KPA500. I was not looking at the SWR display on the P3 although the second time I did notice that it too spiked (max reading). Like I said, I was operating CW and when I sent just the first dit of a QNI into a CW net the spike occurred. I stopped, and then keyed again and everything was normal. The second time that I did this, I thought that maybe the spike was momentary and continued keying but the second or third key down action (actually, a paddle) resulted in fault with the KPA500. Last night, I did not have any problems at all because I disconnected the TX Mon sensor. I will continue experimenting though as I don’t have too many data points yet to draw conclusions. 73, phil, K7PEH On Aug 12, 2015, at 7:28 AM, Mike VE3YF m...@ve3yf.com wrote: Phil: I have the same setup but only 1 x P3. A K3 and P3 on my left setup and a K3 on the right setup using a MK2R+ and I noticed what you mention only once. I was on 80m with the Right K3 and I saw a brief Power and SWR spike on the Left P3 and K3. I might have had a bit of SWR on the standalone Right K3. I have not noticed it happen since, it might be a band/swr specific issue ie, as I was operating around 3800 and the antenna is designed for the CW and RTTY portion of the band. The Left side radio was on 160m Sloper 73 De Mike VE3YF http://www.ve3yf.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 Message delivered to joberreu-elecr...@moselle.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Audio/noise diversity/phasing question
HI JERRY, You may be thinking of the Bose Noise Cancelling Headphones. These operate at audio and an extra microphone is added to each earbud to pick up background audio in your hamshack or workplace. I'm guessing that the signal from one of these added microphone earbuds is then inverted; and, in turn each earbud adds the signal from its extra microphone to the audio signal from the phone's audio output. In that way, the external noise is cancelled when listening to both phones. One way one might utilize this process in diversity mode using two radio receivers within one radio - like in a K3 or K3s - is to offset receiver B from receiver A, such that receiver B is only receiving noise. Then sum the inversion of that in an external audio circuit with the output of receiver A to receive just the CW signal generated by receiver A. This in effect would cancel the noise from each receiver similarly to that with the Bose. Right now I'm using the K3 in diversity mode by receiving RXB via the AUX input (with a Beverage antenna) and RXA via ANT1 port (with a SteppIR vertical) and letting the K3 process the audio in its native diversity mode. To this I'm also utilizing the APF feature. It's an easy guess that this beats out the scheme described above. However, if might simply be fun to try the adhoc method. 73, Uncle Phil, W0XI, Lawrence, KS. - Original Message - From: ae...@carolinaheli.com To: Elecraft@mailman.qth.net Sent: Thursday, August 13, 2015 11:31:53 AM Subject: [Elecraft] Audio/noise diversity/phasing question I've read where a received signal is split into two signal paths, the noise is somehow shifted 180 degrees (not sure how without affecting the desired signal), the two signals are fed to your headset, one to each side, somehow our brains then perceive the signal to POP out of the noise. Does this apply to the K3/S ? I'm very interested in anything that effectively results in a higher signal to noise. Thanks in advance. Jerry Moore, Future K3S owner 5Sept2015 AE4PB __ 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 Message delivered to aldenmcduf...@sunflower.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3S Macro Programming - Rotating Macros
I am trying to program my first Rotating Macro, where the PF1 Button will set SPLIT+1 the first time it is pressed and held and it will UNSET SPLIT the second time it is pressed and held. I am basing this on the work by W8TN and LA3ZA, and others who have offered support here. I have had PF1 as SPLIT+1 and PF2 as SPLIT+5. They are saved in MACRO1 and MACRO2, respectively. I am trying to add MACRO3 and MACRO4 to CLEAR SPLIT and set to SPLIT+1 and SPLIT+5 again. I added the following to MACRO1 based on the Programmers reference: MN110;SWT20;SWH18;SWT14; #20 is listed as MACRO3, #18 is listed as PF1. But, the SPLIT part of the MACRO works, but the MACRO is not reprogrammed. So, little joy. When I execute the MACROs from K3 Utility, the reprogram things fine. But not when I hold the button. I hope I don't have to add these in CONFIG every time. That doesn't make sense. (100) 72, Byron __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 TX Mon question
Hi Merv, I don't believe this changes the existing P3TXMON operation with non-Elecraft radios. Only if Alan detects that its a K3 when the P3 with P3TXMON is powered up will he actually query the radio to see if its in TX. Otherwise it will act as it does now and use detection of forward power to go into TX mode. Eric /elecraft.com/ On 8/13/2015 5:02 PM, Merv Schweigert wrote: Alan, understand that some one will not always be happy with the way things are, any way to make that a menu selection? I would like to use the P3/TXmon with other radios, this change would not allow that? Seems that defeats the ability of the P3 with a TXmon to work with other radios.. Or did I miss something? 73 Merv K9FD/KH6 OK, what I did was change it so that, when a K3 is connected, the P3 TX monitor will only go into transmit mode when commanded to do so by the K3, even if RF power is present on the coax. That should eliminate the false tripping. It will be in the next beta release, which should be Real Soon Now. :=) Alan N1AL On 08/12/2015 01:03 PM, W4CCS wrote: Guy: I agree and hold out hope Elecraft will do something.. If the sensitivity is set low for QRP operators, seems they would not need the 2KW sensor. Maybe have an option in the setup.. Like I stated earlier, it is very annoying and quite sure I'm not the only one with this concern.. W4CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted so it only responds to its own transmitted signal. An option because others might want to know that their TX signal was coming back at them on another coax. Or perhaps set an adjustable gating power level defaulted to one watt. 73, Guy K2AV On Wednesday, August 12, 2015, Alan n...@sonic.net wrote: The transmit sensor in the P3 TX monitor trips at only a few tenths of a watt (a few watts with the 2 kW coupler). It was made sensitive so it would work with QRP. Alan N1AL On 08/12/2015 08:25 AM, W4CCS wrote: The radio with the TX Mon is on 6 meters only. The HF antennas are about 200 feet away and about 150 feet high. That equates to around 90 feet Above the six meter antenna.. Thought that would be adequate. This never happens on the Power Master meter or on the LP-100.. Only the TX Mon. W4CCS -Original Message- From: Joe Subich, W4TV [mailto:li...@subich.com] Sent: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas were close together and/or the (two radio) antenna switch lacks sufficient isolation. 73, ... Joe, W4TV On 8/12/2015 10:09 AM, W4CCS wrote: Sorry, I did not answer your question.. Yes, the VSWR is showing high and all reflected.. CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, August 12, 2015 9:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected? 73, ... Joe, W4TV On 8/12/2015 9:20 AM, W4CCS wrote: I have two K3's and two P3's but only one has the TX Mon option.. When I transmit with the K3 that does NOT have the TX Mon installed, the P3 that does have it reacts showing VSWR and one sweep of the transmit envelope.. This seems very strange.. The only thing in common between the two is the MicroHam router program.. Suggestions..?? Clyde Scott - W4CCS Moultrie, GA - EM81cg __ 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 Message delivered to li...@subich.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 Message delivered to w4...@w4ccs.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 Message
Re: [Elecraft] New P3 TX Monitor....unusual behavior with SWR (at times)
Having the LP-100A on the antenna side is by design. I'm not much interested in monitoring the antenna VSWR in real time, but I do want to know the power being delivered at the tail end of the station RF lineup. The light show on the KAT500 and the KPA500 (if it's being used) as well as the internal indication in the K3 gives plenty of redundant information about whether or not the antenna tuner is doing its job. The unique vector measurement capability of the LPA-100A also makes it good for maintenance checks. I periodically run the utility program to have the LPA-100A measure the various antennas across their operational bands and compare the results against historical data. This lets me see any changes that might have occurred -- these changes would be masked by an antenna tuner between the LPA-100A sensor and the actual antenna. I actually use the KAT500 almost exclusively for tuning my 80 meter inverted L, which is too long electrically but mechanically impossible to tune properly. Although all my other antennas are resonant on their respective operating bands I also leave the KAT500 on line to use as a line flattener on 160 and 40 meters if I should operate outside of the normal CW bands these antennas are tuned for. 73... Randy, W8FN On 8/13/2015 12:30 AM, Phil Hystad wrote: Randy, If your LP100A is on the antenna side of your KAT500 then you are putting your LP100A in the region of higher SWR if your antenna is not close to resonance. I think you would want to put your LP100A in the inboard side of the KAT500 so that you are properly showing the “tuned” SWR on the LPA100A and your readings will be more accurate I believe. If you want to know the antenna side of the SWR, what the KAT500 refers to as the Bypass SWR since it is the SWR you see if you bypass the KAT500, then you can use the KAT500 utility program to display that. I am not seeing the problems you describe. For example, when I run without the TX Mon Sensor in place, there are absolutely no SWR problems at all (look again at the configuration below that I have). I should also note that today I did not see any problems with the SWR spurts I originally reported even with the TX Monitor sensor inline. 73, phil, K7PEH __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3S Macro Programming - Rotating Macros
This is an RTFM problem. I was confusing the KX3 Table with the K3 Table. When I used the proper values from the K3 Table, it worked perfectly. 73, Byron MACRO1-4: #11, 12, 13, 24 PF1-PF2: #45, 47 On 08/13/2015 08:14 PM, Byron Peebles wrote: I am trying to program my first Rotating Macro, where the PF1 Button will set SPLIT+1 the first time it is pressed and held and it will UNSET SPLIT the second time it is pressed and held. I am basing this on the work by W8TN and LA3ZA, and others who have offered support here. I have had PF1 as SPLIT+1 and PF2 as SPLIT+5. They are saved in MACRO1 and MACRO2, respectively. I am trying to add MACRO3 and MACRO4 to CLEAR SPLIT and set to SPLIT+1 and SPLIT+5 again. I added the following to MACRO1 based on the Programmers reference: MN110;SWT20;SWH18;SWT14; #20 is listed as MACRO3, #18 is listed as PF1. But, the SPLIT part of the MACRO works, but the MACRO is not reprogrammed. So, little joy. When I execute the MACROs from K3 Utility, the reprogram things fine. But not when I hold the button. __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 TX Mon question
Alan, understand that some one will not always be happy with the way things are, any way to make that a menu selection? I would like to use the P3/TXmon with other radios, this change would not allow that? Seems that defeats the ability of the P3 with a TXmon to work with other radios.. Or did I miss something? 73 Merv K9FD/KH6 OK, what I did was change it so that, when a K3 is connected, the P3 TX monitor will only go into transmit mode when commanded to do so by the K3, even if RF power is present on the coax. That should eliminate the false tripping. It will be in the next beta release, which should be Real Soon Now. :=) Alan N1AL On 08/12/2015 01:03 PM, W4CCS wrote: Guy: I agree and hold out hope Elecraft will do something.. If the sensitivity is set low for QRP operators, seems they would not need the 2KW sensor. Maybe have an option in the setup.. Like I stated earlier, it is very annoying and quite sure I'm not the only one with this concern.. W4CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted so it only responds to its own transmitted signal. An option because others might want to know that their TX signal was coming back at them on another coax. Or perhaps set an adjustable gating power level defaulted to one watt. 73, Guy K2AV On Wednesday, August 12, 2015, Alan n...@sonic.net wrote: The transmit sensor in the P3 TX monitor trips at only a few tenths of a watt (a few watts with the 2 kW coupler). It was made sensitive so it would work with QRP. Alan N1AL On 08/12/2015 08:25 AM, W4CCS wrote: The radio with the TX Mon is on 6 meters only. The HF antennas are about 200 feet away and about 150 feet high. That equates to around 90 feet Above the six meter antenna.. Thought that would be adequate. This never happens on the Power Master meter or on the LP-100.. Only the TX Mon. W4CCS -Original Message- From: Joe Subich, W4TV [mailto:li...@subich.com] Sent: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas were close together and/or the (two radio) antenna switch lacks sufficient isolation. 73, ... Joe, W4TV On 8/12/2015 10:09 AM, W4CCS wrote: Sorry, I did not answer your question.. Yes, the VSWR is showing high and all reflected.. CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, August 12, 2015 9:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected? 73, ... Joe, W4TV On 8/12/2015 9:20 AM, W4CCS wrote: I have two K3's and two P3's but only one has the TX Mon option.. When I transmit with the K3 that does NOT have the TX Mon installed, the P3 that does have it reacts showing VSWR and one sweep of the transmit envelope.. This seems very strange.. The only thing in common between the two is the MicroHam router program.. Suggestions..?? Clyde Scott - W4CCS Moultrie, GA - EM81cg __ 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 Message delivered to li...@subich.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 Message delivered to w4...@w4ccs.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 Message delivered to n...@sonic.net __ 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 Message delivered to
Re: [Elecraft] P3 TX Mon question
OK, what I did was change it so that, when a K3 is connected, the P3 TX monitor will only go into transmit mode when commanded to do so by the K3, even if RF power is present on the coax. That should eliminate the false tripping. It will be in the next beta release, which should be Real Soon Now. :=) Alan N1AL On 08/12/2015 01:03 PM, W4CCS wrote: Guy: I agree and hold out hope Elecraft will do something.. If the sensitivity is set low for QRP operators, seems they would not need the 2KW sensor. Maybe have an option in the setup.. Like I stated earlier, it is very annoying and quite sure I'm not the only one with this concern.. W4CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted so it only responds to its own transmitted signal. An option because others might want to know that their TX signal was coming back at them on another coax. Or perhaps set an adjustable gating power level defaulted to one watt. 73, Guy K2AV On Wednesday, August 12, 2015, Alan n...@sonic.net wrote: The transmit sensor in the P3 TX monitor trips at only a few tenths of a watt (a few watts with the 2 kW coupler). It was made sensitive so it would work with QRP. Alan N1AL On 08/12/2015 08:25 AM, W4CCS wrote: The radio with the TX Mon is on 6 meters only. The HF antennas are about 200 feet away and about 150 feet high. That equates to around 90 feet Above the six meter antenna.. Thought that would be adequate. This never happens on the Power Master meter or on the LP-100.. Only the TX Mon. W4CCS -Original Message- From: Joe Subich, W4TV [mailto:li...@subich.com] Sent: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas were close together and/or the (two radio) antenna switch lacks sufficient isolation. 73, ... Joe, W4TV On 8/12/2015 10:09 AM, W4CCS wrote: Sorry, I did not answer your question.. Yes, the VSWR is showing high and all reflected.. CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, August 12, 2015 9:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected? 73, ... Joe, W4TV On 8/12/2015 9:20 AM, W4CCS wrote: I have two K3's and two P3's but only one has the TX Mon option.. When I transmit with the K3 that does NOT have the TX Mon installed, the P3 that does have it reacts showing VSWR and one sweep of the transmit envelope.. This seems very strange.. The only thing in common between the two is the MicroHam router program.. Suggestions..?? Clyde Scott - W4CCS Moultrie, GA - EM81cg __ 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 Message delivered to li...@subich.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 Message delivered to w4...@w4ccs.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 Message delivered to n...@sonic.net __ 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 Message delivered to k2av@gmail.com -- Sent via Gmail Mobile on my iPhone __ 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
Re: [Elecraft] P3 TX Mon question
Great, thanks for the clarification, 73 Merv Hi Merv, I don't believe this changes the existing P3TXMON operation with non-Elecraft radios. Only if Alan detects that its a K3 when the P3 with P3TXMON is powered up will he actually query the radio to see if its in TX. Otherwise it will act as it does now and use detection of forward power to go into TX mode. Eric /elecraft.com/ On 8/13/2015 5:02 PM, Merv Schweigert wrote: Alan, understand that some one will not always be happy with the way things are, any way to make that a menu selection? I would like to use the P3/TXmon with other radios, this change would not allow that? Seems that defeats the ability of the P3 with a TXmon to work with other radios.. Or did I miss something? 73 Merv K9FD/KH6 OK, what I did was change it so that, when a K3 is connected, the P3 TX monitor will only go into transmit mode when commanded to do so by the K3, even if RF power is present on the coax. That should eliminate the false tripping. It will be in the next beta release, which should be Real Soon Now. :=) Alan N1AL On 08/12/2015 01:03 PM, W4CCS wrote: Guy: I agree and hold out hope Elecraft will do something.. If the sensitivity is set low for QRP operators, seems they would not need the 2KW sensor. Maybe have an option in the setup.. Like I stated earlier, it is very annoying and quite sure I'm not the only one with this concern.. W4CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted so it only responds to its own transmitted signal. An option because others might want to know that their TX signal was coming back at them on another coax. Or perhaps set an adjustable gating power level defaulted to one watt. 73, Guy K2AV On Wednesday, August 12, 2015, Alan n...@sonic.net wrote: The transmit sensor in the P3 TX monitor trips at only a few tenths of a watt (a few watts with the 2 kW coupler). It was made sensitive so it would work with QRP. Alan N1AL On 08/12/2015 08:25 AM, W4CCS wrote: The radio with the TX Mon is on 6 meters only. The HF antennas are about 200 feet away and about 150 feet high. That equates to around 90 feet Above the six meter antenna.. Thought that would be adequate. This never happens on the Power Master meter or on the LP-100.. Only the TX Mon. W4CCS -Original Message- From: Joe Subich, W4TV [mailto:li...@subich.com] Sent: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas were close together and/or the (two radio) antenna switch lacks sufficient isolation. 73, ... Joe, W4TV On 8/12/2015 10:09 AM, W4CCS wrote: Sorry, I did not answer your question.. Yes, the VSWR is showing high and all reflected.. CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, August 12, 2015 9:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected? 73, ... Joe, W4TV On 8/12/2015 9:20 AM, W4CCS wrote: I have two K3's and two P3's but only one has the TX Mon option.. When I transmit with the K3 that does NOT have the TX Mon installed, the P3 that does have it reacts showing VSWR and one sweep of the transmit envelope.. This seems very strange.. The only thing in common between the two is the MicroHam router program.. Suggestions..?? Clyde Scott - W4CCS Moultrie, GA - EM81cg __ 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 Message delivered to li...@subich.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 Message delivered to w4...@w4ccs.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
Re: [Elecraft] Elecraft] Audio/noise diversity/phasing question
I used Bose noise cancelling phones in the 90's while doing around 250K miles a year on United. They cut the steady aircraft noise nicely, mainly the higher pitched part, not so good on the LF rumble. It seemed the steady higher frequencies were responsible for the headaches. On my radio, they were ineffective with IF atmospheric static, and almost ineffective against power line noise. I'd guess that much of the LF rumble was conducted thru my body rather than through the air. Full disclosure: My hearing was already severely compromised, the higher frequency steady noise was weakly audible to me without the phones and absent with them. However, it apparently still gave me headaches on transcontinental flights without the phones. Fred K6DGW Sparks NV phil anderson aldenmcduf...@sunflower.com wrote: HI JERRY, You may be thinking of the Bose Noise Cancelling Headphones. These operate at audio and an extra microphone is added to each earbud to pick up background audio in your hamshack or workplace. I'm guessing that the signal from one of these added microphone earbuds is then inverted; and, in turn each earbud adds the signal from its extra microphone to the audio signal from the phone's audio output. In that way, the external noise is cancelled when listening to both phones. One way one might utilize this process in diversity mode using two radio receivers within one radio - like in a K3 or K3s - is to offset receiver B from receiver A, such that receiver B is only receiving noise. Then sum the inversion of that in an external audio circuit with the output of receiver A to receive just the CW signal generated by receiver A. This in effect would cancel the noise from each receiver similarly to that with the Bose. Right now I'm using the K3 in diversity mode by receiving RXB via the AUX input (with a Beverage antenna) and RXA via ANT1 port (with a SteppIR vertical) and letting the K3 process the audio in its native diversity mode. To this I'm also utilizing the APF feature. It's an easy guess that this beats out the scheme described above. However, if might simply be fun to try the adhoc method. 73, Uncle Phil, W0XI, Lawrence, KS. - Original Message - From: ae...@carolinaheli.com To: Elecraft@mailman.qth.net Sent: Thursday, August 13, 2015 11:31:53 AM Subject: [Elecraft] Audio/noise diversity/phasing question I've read where a received signal is split into two signal paths, the noise is somehow shifted 180 degrees (not sure how without affecting the desired signal), the two signals are fed to your headset, one to each side, somehow our brains then perceive the signal to POP out of the noise. Does this apply to the K3/S ? I'm very interested in anything that effectively results in a higher signal to noise. Thanks in advance. Jerry Moore, Future K3S owner 5Sept2015 AE4PB __ 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 Message delivered to aldenmcduf...@sunflower.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 Message delivered to k6...@foothill.net __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Elecraft K3S: First Impressions
I've played with the new K3S for a little over a week now. I'm still gainfully employed, so my hours of operation have been limited. But, I think it's probably the proper time for initial impressions. First, the Elecraft people are beyond impressive. Whether it was pre-sale advice, the offer of extra support when the radio arrived, or the way they approach continuous improvement, these folks are tops. They would need to make a pretty crappy product to not have a loyal following just based on their own attitudes, and the products are well, awesome, too. I thought this was my first Elecraft, but I used a K2 briefly about ten years ago. It was used, not functioning perfectly and for some reason I sold it before the magic took hold. Instead, I've been using Kenwood, Yaesu and TenTec top-line rigs that I've found used from local hams. Each of those righs served me well, and each change was an upgrade in technology and performance. The Elecraft K3S is a significant advance for me. Over the years I had grown quite accustomed to use of the Orion II features, and in contests and DXing it was the best radio I'd ever owned. But as the TenTec aged, and future service options seemed to be dimming, I shipped it off to the TenTec folks for service and ordered the K3S. I went on vacation so the lack of a radio didn't cause a nervous breakdown. Hello, Disney. I'm a DXer and a single-op contester. I haven't been the srious contester I was at one time, but I still value those skills in both operators and equipment. So, I made sure to try the K3S in one or two contests, even if only for a few contacts. The North American QSO Party wasn't much of a challenge for the radio. Since *most* operators run without their amplifier, the signals tend to be better spread out, and since it's mostly a domestic contest, it seems there's a more casual element operating. The Elecraft almost made HF seem channelized in that I'd tune in a signal and that's all I'd hear. One signal. Tune again, one signal. Tune again. And so on. I was starting to think it needed buttons like the car radio. I experimented with the CW reader, without much luck. I've seen videos of others using it, but never got it to work as well as my brain (no comments, please) so I quickly gave up. Yes, I did the CWT and SPOT and all that. I will try that again some slow night. I later tried the Worked All Europe. While I operating the NAQP on 40m QRP, I did WAE on 40m at 100W. I worked everyone I heard in one call. and although the bands were more crowded, there were no times when I had any trouble squeezing out the noise for the signal I wanted. The filtering is pretty intuitive when you realize how it works, a usability impro9vement over the Orion. So, two contests of far different style, but in both cases I felt the receiver, the audio and the filtering were a vast improvement. I started working to get my headset mic working. Initially the audio was much too low for people to hear me, and I played with TEST mode and MONitoring to get that improved. That made QRP possible again, and also made any call under power a one-call contact. Pileup, what pileup? Very nice. Audio from the recevier also excellent. It too 15 minutes to get my computer software properly configured after the Windows 10 upgrade and the change of radios. But everything that worked before the change works at least as good afterwards. It took some time to get the K3 Utility on the proper port (USB), but once I had that up and running, things were better. Loading CW memories and (rotating) Macros was easy, and once I realized what the button numbers were for the macros I was reprogramming the PF keys at an irrational pace. HI I've only used the K3S on CW and SSB. I never did get a decent DATA station going with my previous radios, but this one seems worth a try. So, that's my next challenge: getting on RTTY/PSK and getting my first DX. So, this is a very solid transceiver. This one (10072) is configured with both receivers having 2.8, 2.1, 1.0, 0.5 and 0.25 filters. It includes the ATU and the 100W option. It works really well. There is a lot of talk about how expensive it is. I hesitated because of that factor, but I don't jhave one ounce of regret. And how you know why I'm still gainfully employed. This is one of those rewards! (100) 72, Byron __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3S Power Up Audio Pop
Audio experts: I have a pair of AudioEngine 2 powered speakers servicing my beautiful new K3S (an excellent combo). On K3S power up and power down, there is pretty major audio surge pop that, I am sure, is not healthy long-term for the powered speakers. Can anyone suggest a small speaker connection modification to prevent or lessen that power up pop? It occurs to me the simplest thing to do is to power up the K3S and then power up the speakers. David Ahrendts, KC0XT, Los Angeles David Ahrendts davidahren...@me.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Frequency reference for the K3 directly off a GPS
Take a look at what KA6SQG did to sync both audio and RF from GPS for this five-site 440 MHz simulcast repeater system. http://www.wb6ece.org/technical-info.htmlPlay the youtube video while flipping through the slides. You'll need headphones to get acceptable audio from the youtube. I live in the area covered by this system, and can attest that it works quite well. 73, Jim K9YC On Thu,8/13/2015 6:59 AM, Matt Zilmer wrote: Hi Sverre, This type of 10 MHz output has short term stability problems and isn't suitable for direct drive of a K3 (imho). It *could* be used, if integrated over a long time constant (thinking many seconds) to drive a D.O., but that would take additional circuitry. It might be quite a project. You're probably better off with A GPSDO or a Rubidium source. Even a plain OCXO would work if you can keep it calibrated. 73, matt W6NIA On Thu, 13 Aug 2015 06:36:31 -0700 (MST), you wrote: Some recent GPS modules (ublox Neo 7) have a programmable output that in addition to the 1 pps output can be programmed even to output 10 MHz. This output has a lot of jitter as it seems to be derived from a 48 MHz clock which is divided down in such a way as to generate a mix of short and long cycles but so that the average frequency is maintained accurately at 10 MHz. A description can be found here https://sites.google.com/site/g4zfqradio/u-blox_neo-6-7 and performance is partly described here: https://www.febo.com/pipermail/time-nuts/2014-August/086257.html My question is regarding the K3 external reference input. Is this source good enough to drive the K3 reference? Can the K3 clean up the jitter internally, or does the K3 require a source with much less phase noise? __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3S Power Up Audio Pop
On Thu,8/13/2015 9:04 AM, David Ahrendts wrote: Audio experts: I have a pair of AudioEngine 2 powered speakers servicing my beautiful new K3S (an excellent combo). On K3S power up and power down, there is pretty major audio surge pop that, I am sure, is not healthy long-term for the powered speakers. Can anyone suggest a small speaker connection modification to prevent or lessen that power up pop? It occurs to me the simplest thing to do is to power up the K3S and then power up the speakers. A couple of observations. First, I doubt that powered speakers are needed -- I'm happy with non-powered speakers with my K3, and Elecraft says that the audio output stage in the K3S has been beefed up. Second, good audio practice is to turn down the gain on the speakers as far as practical and set the line level out of the K3S to get the sound level that you want. Third, yes, turning the speakers on after the K3S would also solve it, but you may not need to worry about that if you've set levels as above. And finally -- powered speakers are notorious for RF susceptibility. 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] FS: KXV3A PR6-10
KXV3A Interface Option $60 shipped PR6-10 Pre-Amplifier $80 shipped Paypal or money order CONUS Thanks 73 Dwight NS9I __ 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 Message delivered to arch...@mail-archive.com
