[Elecraft] KX3 ACC1 interface - logic signal levels - what is official Elecraft standard for this ?
Hi Kx3 users, Other posts have previously dealt with the issue that the standard KXUSB cable for Kx3 does not support CW keying from the computer to the Kx3 radio, simply from the fact that as opposed to the ordinary serial connection (old RS-232 standard), the RTS and CTS pins are not available in the 3.5 mm, three-pin TRS jack connector for ACC1 in the Kx3. Pursuing this further, and not wanting to have more than one USB cable to my PC from my Kx3 for all of my buisness on the PC side, I want now to build a new interface cable using a custom cable assembly from FTDI: http://www.ftdichip.com/Products/Cables/USBTTLSerial.htm Then using either RTS or CTS flags in my PC's radio interface setup (log program Win-Test) to pull the CW key connection in the Kx3, possibly via a FET or Opto Coupler. - I have a 4N25 in mind for this ... with parallel coupling of two 1N5711 to the paddle dit's and dah's. I did the very same thing on my K2, and it worked like a charm. Checking the signal levels on my oscilloscope today on the ACC1 data connection, I find: Tip connection = Rx data from the computer to the Kx3 = 5,0 - 5,2 volts level (generated by the FTDI line driver) Ring connection = Tx data to the computer from the Kx3 = 7,0-7,5 volts level (generated by the Kx3 line driver) both with respect to GND being the sleeve pin of the ACC1 jack plug, and looking pretty, noise-free and free of any transients. Good, nice square signals with good integrity. Baud rate of the data here is obviously configurable, and with your PC's logging program so is the polling rate of how often the PC requests data from the Kx3. My question :What is the official Elecraft electrical specifications for the ACC1 interface ??? What voltage levels for Rx and Tx, respectively, and what impedance to I terminate with when I interface with e.g. opto coupler for my project ? Would I be OK assuming I just use a 5-volt TTL-level cable version here, both ways Rx+Tx OK ? TTL-232R-5V: http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf 73' Brian OZ2BRN Kx3 # 1118, K2 # 6936 (to which I did the same mod) __ 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] KAT500 Remote Version
Dave, I always use TL Details whicj can be downloaded here at wbsite of AC6LA : http://www.ac6la.com/tldetails.html It is easy to use. Choose the cable that you are using, set the frequency, set the line length and set an estiimate of the impedance at the load. If you donot know that and your swr meter says 1:3, then set R tot 150. This makes the program calculate with SWR 3 Then you can read the loss and some other nice things from this very nice little tool. It has been on my computers for a very long time, and has become a standard program for me to install on my computer. 73 Arie PA3A Op 20-9-2012 21:59, David Bunte schreef: It was suggested that the TLW program by N6BV, that is packaged with the ARRL Antenna Book would help, but I have not been able to figure out how to use it, and can find no instructions for that program. Any and all help will be appreciated. Dave - K9FN __ 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] Got the tracking email
... for my KX3 complete with the elusive paddle. Best news this week! Colin - G8FRA/M5FRA m5fra.org.uk __ 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] KX3: Preamp shuts itself off
I have been running my KX3 as 28-MHz IF for my 144-28 transverter and the transverter is a little gain deficient in Rx so I turn on the preamp in the KX3 too boost the level a tad. Unfortunately after a few minutes the preamp shuts off by itself. KX3 is sitting in Rx monitoring a 2m FM frequency (29.210+116=145.210). I had the preamp set to 30-dB gain so thought maybe that was overloading the receiver and the radio automatically adjusted for overdriving. So I set the preamp to 10-dB gain. It still shuts off by itself after a few minutes. Anyone see this happening? 73, Ed - KL7UW __ 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] KX3: Preamp shuts itself off
On 09/21/2012 12:23 AM, Edward R Cole wrote: I have been running my KX3 as 28-MHz IF for my 144-28 transverter and the transverter is a little gain deficient in Rx so I turn on the preamp in the KX3 too boost the level a tad. Unfortunately after a few minutes the preamp shuts off by itself. KX3 is sitting in Rx monitoring a 2m FM frequency (29.210+116=145.210). I had the preamp set to 30-dB gain so thought maybe that was overloading the receiver and the radio automatically adjusted for overdriving. So I set the preamp to 10-dB gain. It still shuts off by itself after a few minutes. Anyone see this happening? 73, Ed - KL7UW I've seen that happen as well. If I have the preamp on, and tune a strong nearby station in the AM broadcast band, a little message like HI SIGNAL (I forgot the exact wording) will appear, and the preamp will turn itself off. Good thing, IMO, if it protects against overloading the receiver. It's easy to turn back on again, simply hit PRE. The message only flashes for a few seconds, so it's easy to miss. I kind of wish that alerts/warnings like this would stay on the screen longer, or at least until a control is pressed, so that they're not missed if the radio isn't actively being looked at right at that moment. Josh KJ6PVN __ 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] KX3 ATU maximum SWR that can TX safely
Hi there. I'm really liking the ATU in my KX3: it is able to solve all the bands on my antenna (a G5RV) to a perfect 1.0-1 match, with the exception of 160 meters. It can only get that down to 7.5-1 (or so). I'm curious as to what the maximum SWR is, that I can safely transmit at, without damaging the radio. Is there a table anywhere that shows what the maximum acceptable SWR is, for various power levels? Does the radio automatically detect when it's running into trouble, and throttle back the TX power automatically? If so, that would be great. My 15V power supply allows the KX3 to TX at up to 12 watts, and I'm hesitant to try the full 12 watts at such a high SWR. Thanks! Josh KJ6PVN __ 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] FS: LDG AT-100ProII Autotuner
Selling as new - used twice and decided I prefer a digital readout. Unit is perfect and works as intended. Price is $170 (online price is about $200) This unit handles 1-125 watts Pete WK8S __ 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] 13.8V DC Supply
Mike, KW1ND said: Seems to me Elecraft already has a great linear DC supply: It's built into the KPA500. Repackage it as a stand-alone, done. It is too late to add a 13.8VDC aux supply to the KPA-500, and besides, I don't know if it has an internal supply with appreciable current capability other than the main PA 80V supply. To down-series regulate this to 13.8 would incur unacceptable power loss and heat in the pass element. It would have been nice though, to only have the one AC power cord! Great idea...now if you just had it a few years ago while they were specifying the power transformer...lololol The concept reminds me of how I operated mobile years ago (showing my age here) with the Drake R-4B/T-4XB twins, the 13.8VDC input DC-4 supply supplied all the voltages for both rigs including a 115VAC receptacle for the R-4B. (Unfortunately the DC-4 switched at 330Hz, resulting in a continuous low-level whine IIRC). back to Elecraft issues... Howie - WA4PSC __ 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] KX3 Intermittent changes in audio gain
I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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] [OT] Microsoft Win7 stuff
Hi, all concerned: Full disclosure: I buy and run generic Microsoft stuff wherever I can, not for the cool ade content, but for the access to the large database of fixes when the stuff breaks. I have no idea if the following works with other stuff. If you liked the earlier windows 7 god mode post, try this one for all the Win7 group policies you ever wanted to see: 1. Left-click the Start button. 2. Type or copy-and-paste gpedit.msc into the search box. 3. Press the ENTER key. Ta-dh. Optional: If you have experienced and want to cure one of my most favorite annoyances, the add-on performance notification I occasionally get at the bottom of my screen: 0. Open Help and read the manual. Heh heh. 1. Enlarge the window to full-screen size. 2. Open either one of the Administrative Templates folders. I usually start with the upper one. 3. Open All settings. 4. Scroll down the Setting column to Disable add-on performance notifications line entry. If you don't see the line entry in the list, look in the other Administrative Templates folder. 5. Open it. 6. Click the Enabled radio button. 7. Click Apply. 8. Close the open windows. 9. Repeat steps 2.-9. for the other Administrative Templates folder; some of the entries appear in both Administrative Templates folders. 10. Reboot the computer. Another one of my favorite annoyances is malware changing settings on the browser's home page. Follow the steps above for the Disable changing home page settings line entry. Hope this is useful. Brgds, Dave, N3HE -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Microsoft-Win7-stuff-tp7563061.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] New beta K3 firmware!
Hi, Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect E72X -Gordan __ 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] Balun Ground Connection
First thing I would say it to literally model your back yard, including all your antennas and feedlines. In the same model. That may cost you some for serious models that will handle that much wire. Or you can visit a friend who has the software and do it on his. In our head, among all the miscellaneous mental simplification devices we have to understand the world, are some often expressed, like coax laying on the ground is out of play and can be forgotten. It's not true of course, and it's hardly the only common misnomer. The truth comes up when you uncover a couple dozen surprises about what is really going on and places where common mode current on conductors is playing havoc. There is no simple rule, but the site model of your yard is worth it. One may get away with a lot of stuff most of the time, even nearly all of the time, but the typical backyard is so random compared to others' backyards that no inviolable rules really exist. One problem with an elevated long run of 450 ohm line placed ~ 900 volts of common mode voltage across a blocking point running QRO and was destroying ferrite devices. Literally modeling the transmission line in the site model identified the reason why, it was just an unlucky length in an unlucky place. It was also dissipating a lot of power. Some redesign, and transformer winding, and problem gone. It was obvious in the model. My intuitive mental simplification device about how that worked was just plain wrong. Do a site model. There was real increase in TX radiated power after that was fixed. There is much about antennas that simply is NOT intuitive. The model is not fooled. I realize this suggestion has all the attractiveness of being told to take out the trash, mow the grass, or plow the garden, paint the house, or complete putting down and burying the radials to have a truly dense field. But if you have one of those surprises Heh, heh. IF you have the site model, you can also model insertion of common mode blocks, adding grounds, discovering where they have effect. LIke I said, taking out the trash is neither elegant nor entertaining, but highly useful overall. 73, Guy. On Fri, Sep 21, 2012 at 1:24 AM, zen...@netspace.net.au wrote: Hi Rich, This DXE balun is just a hefty 1:1 choke balun It's a high grade coax (50ohm) wrapped through ferrite cores. The balanced terminals are floating and the unbalanced end is connected to the aluminium housing and the shield of the 6 foot length of RG213 coax which connects the balun and my tuner. I have a balun inside my tuner too, but I don't use it: it's a 4:1 current balun and in this application with a multi-band loop, I prefer to use the external 1:1 balun. I agree - with my loop , anything that changes the feedline length, even by smallish amounts, alters the impedance seen by the tuner at the end of the line and the manual tuner settings change on (usually) multiple bands and the KAT3 has to reconfigure its LC settings. I expected that, as a function of the impedance transforming effect of the feedline, but what I didn't expect was the very significant difference that different shack grounding arrangements would make to the whole process of matching the antenna system at the shack end of the feedline. About the common mode current that I'm measuring on the coax between the balun and the tuner: Yes, I assume the 1:1 balun has sufficient common mode impedance to be preventing common mode current standing waves on unbalanced side of it. But I think what I'm measuring is current that's being induced in the coax shield because it's lying in the near field of radiation of the loop. Again, what is a mystery to me is how changing the grounding arrangement on the balun could affect the magnitude of that. I find this intruguing, but for the moment, I've put the clip on ammeter away. I'm going to forget it, while i digest this, and go and play on 20m instead. Thanks for all the comments I've rec'd, on and off the list. 73 John VK7JB -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Fjeld Sent: Friday, 21 September 2012 1:00 PM To: elecraft posting Subject: [Elecraft] Fw: Balun Ground Connection John, It is unfortunate that we can't see a schematic of how the balun is wired. I have thought of doing that same thing to be able to use an ATU. Presently, I have an 80 meter loop fed with homebrew 450 ohm ladder line to a tuner with a 1:1 balun within. It works beautifully on all bands. I wish I had done it many years ago. As for your grounding the coax at both ends, I effectively do that here also on my coax switch with coax to my K3 which is also grounded. So that is why it would be necessary to
Re: [Elecraft] KX3 Intermittent changes in audio gain
The KX3 probably detected a HI CUR condition. This can happen because of high (or low) PS voltage due to automotive electrical fluctuations. Sometimes this can happen because of ground current with the antenna connected, so check this for a positive correlation. You should not see HI CUR while on the KX3's internal batteries. This proves the automotive supply is caused it. When the KX3 sees HI CUR (usually something higher than 300 mA on RX), it will flash that HI CUR message on VFO A. If the condition persists, it will drop the AF gain to some predetermined value. If the condition continues beyond that point, the KX3 will shut itself off to protect itself. In my own case, both the AF gain and self-shutdown events were happening. HI CUR is preventable in a mobile setting - see below. I produced a pretty good document on KX3 mobile ops, which I'm about to add to. It's posted on the Elecraft web site at http://www.elecraft.com/K2_Manual_Download_Page.htm#kx3_mobile. Keith, I saw that same type of problem while mobile with KX3 #6 right up until I installed a DC-DC converter. See the doc for details of all that. 73, matt W6NIA KX3 #6, K3 #24, etc. On Fri, 21 Sep 2012 05:45:18 -0700, you wrote: I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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
[Elecraft] HEY
awesome you should check this out wow http://www.news15localca.net/work/?article=65102 __ 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] [KX3] K2N QRP CW DE-Xpedition Results and Video
AMAZIN' ! Simply Amazin'! I always love to see the guy's who do the restoration work on the W.W.II stuff... Great Job Guy's on the efforts made there LOTS of F.U.N. had by all from what we can see ... Stan any idea from Mr Begali himself perhaps when the new key will be nearing the release date ? I for one are certainly gonna be keepin' an eye out for that (IF ! it helps me send CW like the fella in the video hi-hi)... Thanks for the heads-up.. 73's Andy GM0NWI andy.gm0n...@btinternet.com = Any close up pictures of the new key? 73, W0EA TJ __ 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] New beta K3 firmware!
Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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] [KX3] K2N QRP CW DE-Xpedition Results and Video
Andy, I too wish I could send CW like that fella in the video. As far as a release date goes, Ulrich initially thought a couple weeks and he states this in the video. Eight hours of multiple operators pounding the Adventures produced some ideas for further (minor) refinements which Piero is now considering. So...most likely not a couple weeks but it shouldn't be too much longer before we hear something official. 73, Stan WB2LQF On Fri, Sep 21, 2012 at 11:03 AM, Andy - GM0NWI wrote: AMAZIN' ! Simply Amazin'! I always love to see the guy's who do the restoration work on the W.W.II stuff... Great Job Guy's on the efforts made there LOTS of F.U.N. had by all from what we can see ... Stan any idea from Mr Begali himself perhaps when the new key will be nearing the release date ? I for one are certainly gonna be keepin' an eye out for that (IF ! it helps me send CW like the fella in the video hi-hi)... Thanks for the heads-up.. 73's Andy GM0NWI andy.gm0n...@btinternet.com = Any close up pictures of the new key? 73, W0EA TJ __ 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] New beta K3 firmware!
Any hope for serial command support for the receive equalizer? AB2TC - Knut wayne burdick wrote Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: Elecraft@.qth 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://elecraft.365791.n2.nabble.com/K3-RF-feedback-tp7561833p7563070.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] K3 and Expert Amp
I'm looking at the SPE Expert Amp 1K-FA. The SPE amps both recommend using an ALC connection to automatically control the radio's output power thus preventing amplifier overdrive. I talked to an SPE rep and I understood him to say that I couldn't use the ALC connection with a K3 and there was an alternative way to allow the SPE to control the K3 output power by manually configuring the SPE to set the K3 output power on a band by band basis. I looked at the SPE manual and it outlines a method to set up a flex-radio that does not have the ALC connection but doesn't talk about the K3. I assume the k3 setup would be the same as for the flex-radio. Does anyone have experience with setting this up with the K3 and SPE 1K-FA. Or, experience using the K3 ext ALC with and SPE? Thanks, Gary Slagel KT0A __ 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 and Expert Amp
Gary, SPE has some misconception that their ALC is fast enough that the amplifier will not be overdriven - they do instruct the user to set the drive power to maximum and let the amplifier control the drive. That just does not make sense to me - by the time the amplifier detects that it is being overdriven, the distortion has already occurred, and then it takes a finite length of time for the amp to increase the ALC and throttle back the driving power. I just don't understand how that can work in either zero or negative time to prevent distortion. I would suggest you drive the SPE amps just like any other - adjust the drive power to produce the desired power output on each band (yes, the K3 will remember the drive power on a per band basis). That way, the amplifier is never driven into the ALC region, and no distortion occurs. The ALC line can be connected just in case there is some fault - the amplifier can reduce the drive level to protect itself. 73, Don W3FPR On 9/21/2012 12:37 PM, Gary Slagel wrote: I'm looking at the SPE Expert Amp 1K-FA. The SPE amps both recommend using an ALC connection to automatically control the radio's output power thus preventing amplifier overdrive. I talked to an SPE rep and I understood him to say that I couldn't use the ALC connection with a K3 and there was an alternative way to allow the SPE to control the K3 output power by manually configuring the SPE to set the K3 output power on a band by band basis. I looked at the SPE manual and it outlines a method to set up a flex-radio that does not have the ALC connection but doesn't talk about the K3. I assume the k3 setup would be the same as for the flex-radio. Does anyone have experience with setting this up with the K3 and SPE 1K-FA. Or, experience using the K3 ext ALC with and SPE? __ 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] New beta K3 firmware!
How about allowing use of the FM filter for AM and ESSB transmit? 73, ... Joe, W4TV On 9/21/2012 11:11 AM, Wayne Burdick wrote: Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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] KX3: Preamp shuts itself off
At 01:09 AM 9/21/2012, Josh Lehan wrote: On 09/21/2012 12:23 AM, Edward R Cole wrote: I have been running my KX3 as 28-MHz IF for my 144-28 transverter and the transverter is a little gain deficient in Rx so I turn on the preamp in the KX3 too boost the level a tad. Unfortunately after a few minutes the preamp shuts off by itself. KX3 is sitting in Rx monitoring a 2m FM frequency (29.210+116=145.210). I had the preamp set to 30-dB gain so thought maybe that was overloading the receiver and the radio automatically adjusted for overdriving. So I set the preamp to 10-dB gain. It still shuts off by itself after a few minutes. Anyone see this happening? 73, Ed - KL7UW I've seen that happen as well. If I have the preamp on, and tune a strong nearby station in the AM broadcast band, a little message like HI SIGNAL (I forgot the exact wording) will appear, and the preamp will turn itself off. Good thing, IMO, if it protects against overloading the receiver. It's easy to turn back on again, simply hit PRE. The message only flashes for a few seconds, so it's easy to miss. I kind of wish that alerts/warnings like this would stay on the screen longer, or at least until a control is pressed, so that they're not missed if the radio isn't actively being looked at right at that moment. Josh KJ6PVN Josh if the signal were s9+40 I would agree with that, but the signal just barely shows S1 flickering and not full quieting. The preamp should not trip in that condition else it is not usable for any signal. Use on 10m and 6m is necessary for good sensitivity. BTW when I run the transverter on my K3 I see a signal of S9, so the KX3 appears considerably less sensitive on 28-MHz. This is comparing by looking the same IRLP node only 15-miles away which exhibits a stable FM signal. That is why I wish to run the preamp. Monitoring a FM channel should not require the operator to stare at the radio with finger poised to push the PRE button. I'll run a comparative test using -107 dBm from my XG3. It shows S4 when using the 144-28 transverter with the K3 (28-MHz with no preamp engaged). 73, Ed- KL7UW __ 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 and Expert Amp
On 9/21/2012 9:37 AM, Gary Slagel wrote: I'm looking at the SPE Expert Amp 1K-FA. The SPE amps both recommend using an ALC connection to automatically control the radio's output power thus preventing amplifier overdrive. It is NEVER a good idea to use ALC to set drive level to a power amp. Doing so is a recipe for distortion, key clicks, and splatter. ALWAYS control the amplifier output power by setting the POWER OUTPUT of the transceiver so that the transceiver produces just enough output power to get the desired power from the amplifier. IF you want to use ALC, use it ONLY to protect the power amp from failures in the antenna system. Think of it as belt and suspenders. FWIW, I've NEVER used ALC between any rig and amp that I've owned or operated. Modern amplifiers do NOT need ALC -- indeed, modern includes my vintage Ten Tec Titan power amps that were designed in the late '70s and built well into the '80s. The manual notes that although an ALC output is provided for compatibility with older rigs, it should not be used except as I've described. 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
[Elecraft] K3 and Expert 1K-FA
Hi Gary, I'm using since more than thee years the combination K3 - Expert 1K-FA. *I never use the ALC-connection*, but of course the band-information. That is more importand As Don said this would cause distortion at the beginning af each transmission. I simply adjust the K3-Power-Gain to 15 to 20 watts. If You schould forget the powersetting, no problem, the Expert switches down, gives a warning signal and a diagnosis on its display. I'm very content with that nice PA. btw it works well also with my beloved K2 (with KRC2). The KX3 is still not tested, hi Best wishes de Hans (K2 #7029; K3 #536, KX3 #478) __ 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] KX3 and MicroHam USB Interface III works very well! :-)
Yesterday I put together an interface cable to interface the KX3 to my MicroHam USB Interface III. The results turned out to be very good, the MicroHam USB III works very well with my KX3. I have posted the wiring diagram here: http://lh6.ggpht.com/-gDPTphLWxyg/UFyZpnZ7pMI/ErA/X9TueMFXJO0/s1600-h/DB15-EL-KX3_Cable%25255B13%25255D.jpg I had to made the interface cable myself because MicroHAM does not make a cable for the KX3. (If for some reason you're not able to view the drawing, you may go in and click the drawing on my Norwegian blog page: http://arcticpeak.blogspot.no/2012/09/interfacekabler-for-elecraft-kx3-og.html ) The MicroHAM USB Interface III is a nice litle interface for voice, CW and digimode with a built-in USB soundcard. The MicroHAM USB Interface III also provides control (frequency, mode, etc) of the transceiver and PTT, all with one USB cable to the PC. http://microham.com/contents/en-us/d158.html Martin Storli LA8OKA Oslo, Norway ARCTICPEAK's Radio pages! http://www.arcticpeak.com/radio.htm __ 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] KX3 adapter cable for the Heil Traveler Headset.
Yesterday, I made an adapter cable to be able to use my Heil Traveler headset with my KX3. I have posted the wiring diagram here: http://lh5.ggpht.com/-7TuJJ03MHEY/UFyXN12NkuI/Epc/06m5AVkwSas/s1600-h/HEIL_Traveler_EL-KX3_Cable10.jpg (If for some reason you're not able to view the drawing, you may go in and click the drawing on my Norwegian blog page: http://arcticpeak.blogspot.no/2012/09/adapterkabel-for-heil-traveler-headset.html ) The Heil Traveler headset worked very well with the KX3! :-) Martin Storli LA8OKA Oslo, Norway ARCTICPEAK's Radio pages! http://www.arcticpeak.com/radio.htm __ 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 and Expert Amp
Spot on, Jim! I have NEVER used ALC with any PA. BTW, most ACOM amps for instance do not have an ALC output - they must know why! Misuse of ALC is the cause of many bad (not to say horrible) signals we hear on the bands... It's so easy to reduce input power... And my K3/KPA500 combo does it automatically. 73 Richard - HB9ANM Jim Brown-10 wrote On 9/21/2012 9:37 AM, Gary Slagel wrote: It is NEVER a good idea to use ALC to set drive level to a power amp. Doing so is a recipe for distortion, key clicks, and splatter. ALWAYS control the amplifier output power by setting the POWER OUTPUT of the transceiver so that the transceiver produces just enough output power to get the desired power from the amplifier. - Richard - HB9ANM -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-Expert-Amp-tp7563071p7563079.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] (Elecraft) XG3 RF generator software port selection
Has any one gotten the XG3 RF generator to talk to a laptop just thru a USB port? I am useing a Windows XP laptop which does not have the old style com-port 1 with a db-9 connector, it just has the modern USB ports. I am wondering If I don't have a problem with the USB driver. When I start up the software that comes with the generator, there is no selection of a port available in the select this port portion of the windows software. Has any one found a cure for this? Thanks, nels nelsen NE7LS __ 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] New beta K3 firmware!
*Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 * On 22 September 2012 03:10, Joe Subich, W4TV li...@subich.com wrote: How about allowing use of the FM filter for AM and ESSB transmit? 73, ... Joe, W4TV On 9/21/2012 11:11 AM, Wayne Burdick wrote: Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ 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] New beta K3 firmware!
Originally sent direct, was meant for the list. Actually, we can run up to 8khz bandwidth, with the exception of 16Khz in the FM segment of 10m, and of course the very very low band. The rules do change above 10M though depending on your license class. What this means is you can actually, legally run 6Khz wide AM on HF. I'm looking at the Amateur LCD right now. It's a common misconception that you can only run 3KHz on HF in VK --- VK3XJM 0416039082 j...@zindello.com.au http://www.zindello.com.au/ On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: *Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 * On 22 September 2012 03:10, Joe Subich, W4TV li...@subich.com wrote: How about allowing use of the FM filter for AM and ESSB transmit? 73, ... Joe, W4TV On 9/21/2012 11:11 AM, Wayne Burdick wrote: Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ 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] New beta K3 firmware!
I don't know the motivation for the FM filter request, but I will say that here in the US there are vast expanses of the bands that are mostly unused. For instance, night after night there isn't a single station between 3600 and 3700 kHz here on the west coast. As another data point, I just counted the number of stations currently operating between 28300 and 28500 kHz: a total of 4. Under conditions like these I see no harm in allowing the ESSB stations to experiment. Al W6LX *Joe, I have to ask, why? __ 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] KX3 Intermittent changes in audio gain
Matt That's exactly what has happened I saw the high current flash I didn't see it before because I was driving but I just saw it now so I think there's a positive correlation. Thank you very much for the insight! Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 7:18 AM, Matt Zilmer mzil...@verizon.net wrote: The KX3 probably detected a HI CUR condition. This can happen because of high (or low) PS voltage due to automotive electrical fluctuations. Sometimes this can happen because of ground current with the antenna connected, so check this for a positive correlation. You should not see HI CUR while on the KX3's internal batteries. This proves the automotive supply is caused it. When the KX3 sees HI CUR (usually something higher than 300 mA on RX), it will flash that HI CUR message on VFO A. If the condition persists, it will drop the AF gain to some predetermined value. If the condition continues beyond that point, the KX3 will shut itself off to protect itself. In my own case, both the AF gain and self-shutdown events were happening. HI CUR is preventable in a mobile setting - see below. I produced a pretty good document on KX3 mobile ops, which I'm about to add to. It's posted on the Elecraft web site at http://www.elecraft.com/K2_Manual_Download_Page.htm#kx3_mobile. Keith, I saw that same type of problem while mobile with KX3 #6 right up until I installed a DC-DC converter. See the doc for details of all that. 73, matt W6NIA KX3 #6, K3 #24, etc. On Fri, 21 Sep 2012 05:45:18 -0700, you wrote: I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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] New beta K3 firmware!
On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: I have to ask, why? Using the FM filter does no widen ESSB or AM ... the bandwidth of those modes is determined by the DSP modulator. The only thing the 8.215 MHz crystal filter does is to provide some additional protection against transmitting the 8.245 MHz image (and according to Wayne, provide some additional rejection of very low level DSP/mixer noise). In any case, the 13 KHz filter is *still* tight enough to eliminate the image - else it could not be used on FM either. In my case, the K3's main RX is full of filters - 13 KHz, 2.8, 1.8, 400 and 200. I can not use AM or ESSB (if I wanted to) without telling the K3 that the 13 KHz filter is really 6 KHz wide. That seems to be a significant headache and makes either FM or AM/ESSB unusable for those who, like me, have a full K3. 73, ... Joe, W4TV On 9/21/2012 5:11 PM, Joshua Mesilane wrote: Originally sent direct, was meant for the list. Actually, we can run up to 8khz bandwidth, with the exception of 16Khz in the FM segment of 10m, and of course the very very low band. The rules do change above 10M though depending on your license class. What this means is you can actually, legally run 6Khz wide AM on HF. I'm looking at the Amateur LCD right now. It's a common misconception that you can only run 3KHz on HF in VK --- VK3XJM 0416039082 j...@zindello.com.au http://www.zindello.com.au/ On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: *Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 * On 22 September 2012 03:10, Joe Subich, W4TV li...@subich.com wrote: How about allowing use of the FM filter for AM and ESSB transmit? 73, ... Joe, W4TV On 9/21/2012 11:11 AM, Wayne Burdick wrote: Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ 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] (Elecraft) XG3 RF generator software port selection
Hi Nels, If you want to use the XG3 with a USB port you'll need to order the KXUSB cable from Elecraft. This has a USB connector on one end and a 3.5mm stereo male plug on the other. The XG3 utility DOES have the ability to change com ports. Bring up the utility and click on the PORT tab, then click the drop down and select the appropriate port. If you have the KXUSB adapter and want to change the port that Windows associates with it, follow these steps: 1) Click on Start, Control Panel, Device Manager. 2) Expand the PORTS by clicking on the arrow to the left. 3) Locate the device you want to change and right click on it. 4) Select PROPERTIES, and click on the ADVANCED button. From here you can simply change the com port number using the drop down COM PORT NUMBER. 73, -Paul -- View this message in context: http://elecraft.365791.n2.nabble.com/Elecraft-XG3-RF-generator-software-port-selection-tp7563080p7563086.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] New beta K3 firmware!
The poster who made that request has made it before. Actually, the width of the transmitted signal should be controlled in the DSP, so Joe does have a point, but the designers at Elecraft are not ready to let go of the bandwidth safety net provided by the 6 kHz filter. Other SDR transmitters can generate AM and ESSB (and FM too) with no roofing filters at all, so it is possible to control the width using only the DSP. 73, Don W3FPR On 9/21/2012 5:21 PM, Al Lorona wrote: I don't know the motivation for the FM filter request, but I will say that here in the US there are vast expanses of the bands that are mostly unused. For instance, night after night there isn't a single station between 3600 and 3700 kHz here on the west coast. As another data point, I just counted the number of stations currently operating between 28300 and 28500 kHz: a total of 4. Under conditions like these I see no harm in allowing the ESSB stations to experiment. __ 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] New beta K3 firmware!
I see Joe's point exactly to enable the 13k filter for more diverse usage, which would suit me perfectly instead of 'tricking' the K3 or am/fm use not just FM. The ESSB is just another thing it does, but the AM is what I want also. These last few messages are not being propagated (to me anyhow) from the mail sever also. Picked up this on the online list. - *Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 * On 22 September 2012 03:10, Joe Subich, W4TV http://mailman.qth.net/mailman/listinfo/elecraft lists at subich.com wrote: How about allowing use of the FM filter for AM and ESSB transmit? 73, __ 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) XG3 RF generator software port selection
Nels, You mention software that comes with the generator Would that be the XG3 Utility? If you do not have XG3 Utility, download it from the Elecraft website. Separately, you must have a driver for your USB to serial adapter. That adapter is the same one that is shipped with the KX3, and you should go to the FTDI website to download the latest driver. There is a link on the Elecraft website for that. It is helpful to remember that the adapter for the XG3 and the KX3 are the same. Get the driver, and then open XG3 Utility. I am thinking (but don't know for sure) that you may have no com ports configured on your laptop, so there are no COM ports available to show in XG3 Utility. add the drivers for the USB adapters first. BTW, they will first recognize the driver for the FTDI chip, and then Windoze will want to load a driver for a Serial Port - you must do both. 73, Don W3FPR On 9/21/2012 4:37 PM, Nels Nelsen wrote: Has any one gotten the XG3 RF generator to talk to a laptop just thru a USB port? I am useing a Windows XP laptop which does not have the old style com-port 1 with a db-9 connector, it just has the modern USB ports. I am wondering If I don't have a problem with the USB driver. When I start up the software that comes with the generator, there is no selection of a port available in the select this port portion of the windows software. __ 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] New beta K3 firmware!
Hi Gary, The point is not to widen the SSB but to use the FM crystal filter to limit it. The DSP does the actual shaping of the TX signal which will still be the same width regardless of whether you're using the 6kHz filter or the 12.5kHz FM one. The idea is to be able to use the FM filter for AM and ESSB as well instead of filling up two precious filter slots, when what you may want/need are closer filters on the low end (say, 400 and 200 Hz). 73, Thomas M0TRN On 21 September 2012 22:00, Gary Gregory garyvk...@gmail.com wrote: Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 __ 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] New beta K3 firmware!
*Hi Joe, Thanks for the explanation. I can now 'see' what you meant and it does seem logical. I too have all 5 filter slots in use. 'Learning all the time'...:-) 73's Joe and thanks again. * On 22 September 2012 07:37, Joe Subich, W4TV li...@subich.com wrote: On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: I have to ask, why? Using the FM filter does no widen ESSB or AM ... the bandwidth of those modes is determined by the DSP modulator. The only thing the 8.215 MHz crystal filter does is to provide some additional protection against transmitting the 8.245 MHz image (and according to Wayne, provide some additional rejection of very low level DSP/mixer noise). In any case, the 13 KHz filter is *still* tight enough to eliminate the image - else it could not be used on FM either. In my case, the K3's main RX is full of filters - 13 KHz, 2.8, 1.8, 400 and 200. I can not use AM or ESSB (if I wanted to) without telling the K3 that the 13 KHz filter is really 6 KHz wide. That seems to be a significant headache and makes either FM or AM/ESSB unusable for those who, like me, have a full K3. 73, ... Joe, W4TV On 9/21/2012 5:11 PM, Joshua Mesilane wrote: Originally sent direct, was meant for the list. Actually, we can run up to 8khz bandwidth, with the exception of 16Khz in the FM segment of 10m, and of course the very very low band. The rules do change above 10M though depending on your license class. What this means is you can actually, legally run 6Khz wide AM on HF. I'm looking at the Amateur LCD right now. It's a common misconception that you can only run 3KHz on HF in VK --- VK3XJM 0416039082 j...@zindello.com.au http://www.zindello.com.au/ On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: *Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 * On 22 September 2012 03:10, Joe Subich, W4TV li...@subich.com wrote: How about allowing use of the FM filter for AM and ESSB transmit? 73, ... Joe, W4TV On 9/21/2012 11:11 AM, Wayne Burdick wrote: Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:
Re: [Elecraft] (Elecraft) XG3 RF generator software port selection
Another thing to be aware of is that the COM Port generally won't show in the Device Manager or XG3 Utility until the USB device is physically plugged into a USB hub on the computer and the appropriate drivers are located by the Operating System. If you've already started the XG3 Utility and plug in the USB device after the program has started, there is a refresh button on the Port page that causes the XG3 Utility to again ask the Windows OS for its list of COM ports. The list of COM ports in the Port tab's drop-down combo box comes from the Operating System's inventory of COM ports. Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Friday, September 21, 2012 3:00 PM To: Nels Nelsen Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] (Elecraft) XG3 RF generator software port selection Nels, You mention software that comes with the generator Would that be the XG3 Utility? If you do not have XG3 Utility, download it from the Elecraft website. Separately, you must have a driver for your USB to serial adapter. That adapter is the same one that is shipped with the KX3, and you should go to the FTDI website to download the latest driver. There is a link on the Elecraft website for that. It is helpful to remember that the adapter for the XG3 and the KX3 are the same. Get the driver, and then open XG3 Utility. I am thinking (but don't know for sure) that you may have no com ports configured on your laptop, so there are no COM ports available to show in XG3 Utility. add the drivers for the USB adapters first. BTW, they will first recognize the driver for the FTDI chip, and then Windoze will want to load a driver for a Serial Port - you must do both. 73, Don W3FPR On 9/21/2012 4:37 PM, Nels Nelsen wrote: Has any one gotten the XG3 RF generator to talk to a laptop just thru a USB port? I am useing a Windows XP laptop which does not have the old style com-port 1 with a db-9 connector, it just has the modern USB ports. I am wondering If I don't have a problem with the USB driver. When I start up the software that comes with the generator, there is no selection of a port available in the select this port portion of the windows software. __ 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] KX3: Preamp shuts itself off
The S-meter only reads the strength of the signals falling within the DSP passband. There may be other strong signals hitting the ADC outside the DSP passband, and these won't show on your S-meter. 73, Matt VK2ACL On 22/09/2012, at 3:18 AM, Edward R Cole kl...@acsalaska.net wrote: At 01:09 AM 9/21/2012, Josh Lehan wrote: On 09/21/2012 12:23 AM, Edward R Cole wrote: I have been running my KX3 as 28-MHz IF for my 144-28 transverter and the transverter is a little gain deficient in Rx so I turn on the preamp in the KX3 too boost the level a tad. Unfortunately after a few minutes the preamp shuts off by itself. KX3 is sitting in Rx monitoring a 2m FM frequency (29.210+116=145.210). I had the preamp set to 30-dB gain so thought maybe that was overloading the receiver and the radio automatically adjusted for overdriving. So I set the preamp to 10-dB gain. It still shuts off by itself after a few minutes. Anyone see this happening? 73, Ed - KL7UW I've seen that happen as well. If I have the preamp on, and tune a strong nearby station in the AM broadcast band, a little message like HI SIGNAL (I forgot the exact wording) will appear, and the preamp will turn itself off. Good thing, IMO, if it protects against overloading the receiver. It's easy to turn back on again, simply hit PRE. The message only flashes for a few seconds, so it's easy to miss. I kind of wish that alerts/warnings like this would stay on the screen longer, or at least until a control is pressed, so that they're not missed if the radio isn't actively being looked at right at that moment. Josh KJ6PVN Josh if the signal were s9+40 I would agree with that, but the signal just barely shows S1 flickering and not full quieting. The preamp should not trip in that condition else it is not usable for any signal. Use on 10m and 6m is necessary for good sensitivity. BTW when I run the transverter on my K3 I see a signal of S9, so the KX3 appears considerably less sensitive on 28-MHz. This is comparing by looking the same IRLP node only 15-miles away which exhibits a stable FM signal. That is why I wish to run the preamp. Monitoring a FM channel should not require the operator to stare at the radio with finger poised to push the PRE button. I'll run a comparative test using -107 dBm from my XG3. It shows S4 when using the 144-28 transverter with the K3 (28-MHz with no preamp engaged). 73, Ed- KL7UW __ 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] New beta K3 firmware!
The 6 kHz filter band-limits the transmit noise originating from the DAC and the transmit mixer to a bandwidth appropriate for AM and ESSB modes. The 15 kHz filter would allow a noise bandwidth over twice as wide. This in-band noise pedestal could be 20-30 dB above the normal transmit noise floor if you were using a lot of mic gain and/or compression. If you were using high power in these modes, your signal would now be much more likely to bring up the receive noise floor at nearby stations. Do you really want to create a 15-kHz wide swath of broadband noise when using ESSB or AM? I don't. That's why I haven't modified the code to allow use of the FM filter for this purpose. I suppose it could be YAMU (yet another menu entry), forcing you to do at least a minimum amount of soul-searching before going broadband :) 73, Wayne N6KR On Sep 21, 2012, at 3:09 PM, Thomas Horsten wrote: Hi Gary, The point is not to widen the SSB but to use the FM crystal filter to limit it. The DSP does the actual shaping of the TX signal which will still be the same width regardless of whether you're using the 6kHz filter or the 12.5kHz FM one. The idea is to be able to use the FM filter for AM and ESSB as well instead of filling up two precious filter slots, when what you may want/need are closer filters on the low end (say, 400 and 200 Hz). 73, Thomas M0TRN On 21 September 2012 22:00, Gary Gregory garyvk...@gmail.com wrote: Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 __ 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] New beta K3 firmware!
This in-band noise pedestal could be 20-30 dB above the normal transmit noise floor if you were using a lot of mic gain and/or compression. If you were using high power in these modes, your signal would now be much more likely to bring up the receive noise floor at nearby stations. Is not this pedestal present in all modes? What is its level below the transmitter PEP? If it is a problem in AM with the FM filter, why is it not similarly a problem in ESSB (3.0-4.0 KHz modes) with a 6 KHz wide filter? 73, ... Joe, W4TV On 9/21/2012 6:40 PM, Wayne Burdick wrote: The 6 kHz filter band-limits the transmit noise originating from the DAC and the transmit mixer to a bandwidth appropriate for AM and ESSB modes. The 15 kHz filter would allow a noise bandwidth over twice as wide. This in-band noise pedestal could be 20-30 dB above the normal transmit noise floor if you were using a lot of mic gain and/or compression. If you were using high power in these modes, your signal would now be much more likely to bring up the receive noise floor at nearby stations. Do you really want to create a 15-kHz wide swath of broadband noise when using ESSB or AM? I don't. That's why I haven't modified the code to allow use of the FM filter for this purpose. I suppose it could be YAMU (yet another menu entry), forcing you to do at least a minimum amount of soul-searching before going broadband :) 73, Wayne N6KR On Sep 21, 2012, at 3:09 PM, Thomas Horsten wrote: Hi Gary, The point is not to widen the SSB but to use the FM crystal filter to limit it. The DSP does the actual shaping of the TX signal which will still be the same width regardless of whether you're using the 6kHz filter or the 12.5kHz FM one. The idea is to be able to use the FM filter for AM and ESSB as well instead of filling up two precious filter slots, when what you may want/need are closer filters on the low end (say, 400 and 200 Hz). 73, Thomas M0TRN On 21 September 2012 22:00, Gary Gregory garyvk...@gmail.com wrote: Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 __ 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] KX3 Intermittent changes in audio gain
Yup. All you have to do is stabilize the power supply at the K3. I recommend a DC-DC converter for this. 73, matt W6NIA On Fri, 21 Sep 2012 14:22:26 -0700, you wrote: Matt That's exactly what has happened I saw the high current flash I didn't see it before because I was driving but I just saw it now so I think there's a positive correlation. Thank you very much for the insight! Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 7:18 AM, Matt Zilmer mzil...@verizon.net wrote: The KX3 probably detected a HI CUR condition. This can happen because of high (or low) PS voltage due to automotive electrical fluctuations. Sometimes this can happen because of ground current with the antenna connected, so check this for a positive correlation. You should not see HI CUR while on the KX3's internal batteries. This proves the automotive supply is caused it. When the KX3 sees HI CUR (usually something higher than 300 mA on RX), it will flash that HI CUR message on VFO A. If the condition persists, it will drop the AF gain to some predetermined value. If the condition continues beyond that point, the KX3 will shut itself off to protect itself. In my own case, both the AF gain and self-shutdown events were happening. HI CUR is preventable in a mobile setting - see below. I produced a pretty good document on KX3 mobile ops, which I'm about to add to. It's posted on the Elecraft web site at http://www.elecraft.com/K2_Manual_Download_Page.htm#kx3_mobile. Keith, I saw that same type of problem while mobile with KX3 #6 right up until I installed a DC-DC converter. See the doc for details of all that. 73, matt W6NIA KX3 #6, K3 #24, etc. On Fri, 21 Sep 2012 05:45:18 -0700, you wrote: I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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] KX3 Intermittent changes in audio gain
Any recommendation or specific brand or place to purchase one for a KX3. Appreciate the sharing of knowledge. Thanks, Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 4:19 PM, Matt Zilmer mzil...@verizon.net wrote: Yup. All you have to do is stabilize the power supply at the K3. I recommend a DC-DC converter for this. 73, matt W6NIA On Fri, 21 Sep 2012 14:22:26 -0700, you wrote: Matt That's exactly what has happened I saw the high current flash I didn't see it before because I was driving but I just saw it now so I think there's a positive correlation. Thank you very much for the insight! Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 7:18 AM, Matt Zilmer mzil...@verizon.net wrote: The KX3 probably detected a HI CUR condition. This can happen because of high (or low) PS voltage due to automotive electrical fluctuations. Sometimes this can happen because of ground current with the antenna connected, so check this for a positive correlation. You should not see HI CUR while on the KX3's internal batteries. This proves the automotive supply is caused it. When the KX3 sees HI CUR (usually something higher than 300 mA on RX), it will flash that HI CUR message on VFO A. If the condition persists, it will drop the AF gain to some predetermined value. If the condition continues beyond that point, the KX3 will shut itself off to protect itself. In my own case, both the AF gain and self-shutdown events were happening. HI CUR is preventable in a mobile setting - see below. I produced a pretty good document on KX3 mobile ops, which I'm about to add to. It's posted on the Elecraft web site at http://www.elecraft.com/K2_Manual_Download_Page.htm#kx3_mobile. Keith, I saw that same type of problem while mobile with KX3 #6 right up until I installed a DC-DC converter. See the doc for details of all that. 73, matt W6NIA KX3 #6, K3 #24, etc. On Fri, 21 Sep 2012 05:45:18 -0700, you wrote: I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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] New beta K3 firmware!
Hi All, I dream one day to see Elecraft building some kind of expansion slot to accomodate more filters. Now all my slots are filled, 200/400/2.1k/2.8k/FM x2 for both RXs so no more free slots for AM or any other filter. I don't care too much abt AM filter but I would like to squeeze two more filters, maybe a 800 and 1.5k filter. Wayne, do you see technical possible to accomodate some sort of optional expansion filter slot? I am sure many of us will welcome such feature. If will ever be such an option but me on alpha/beta testing on top of your list. Tnx and 73 de VE3GNO Daniel From: Gary Gregory garyvk...@gmail.com To: Joe Subich, W4TV li...@subich.com Cc: elecraft@mailman.qth.net Sent: Friday, September 21, 2012 6:19:29 PM Subject: Re: [Elecraft] New beta K3 firmware! *Hi Joe, Thanks for the explanation. I can now 'see' what you meant and it does seem logical. I too have all 5 filter slots in use. 'Learning all the time'...:-) 73's Joe and thanks again. * On 22 September 2012 07:37, Joe Subich, W4TV li...@subich.com wrote: On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: I have to ask, why? Using the FM filter does no widen ESSB or AM ... the bandwidth of those modes is determined by the DSP modulator. The only thing the 8.215 MHz crystal filter does is to provide some additional protection against transmitting the 8.245 MHz image (and according to Wayne, provide some additional rejection of very low level DSP/mixer noise). In any case, the 13 KHz filter is *still* tight enough to eliminate the image - else it could not be used on FM either. In my case, the K3's main RX is full of filters - 13 KHz, 2.8, 1.8, 400 and 200. I can not use AM or ESSB (if I wanted to) without telling the K3 that the 13 KHz filter is really 6 KHz wide. That seems to be a significant headache and makes either FM or AM/ESSB unusable for those who, like me, have a full K3. 73, ... Joe, W4TV On 9/21/2012 5:11 PM, Joshua Mesilane wrote: Originally sent direct, was meant for the list. Actually, we can run up to 8khz bandwidth, with the exception of 16Khz in the FM segment of 10m, and of course the very very low band. The rules do change above 10M though depending on your license class. What this means is you can actually, legally run 6Khz wide AM on HF. I'm looking at the Amateur LCD right now. It's a common misconception that you can only run 3KHz on HF in VK --- VK3XJM 0416039082 j...@zindello.com.au http://www.zindello.com.au/ On Sat, Sep 22, 2012 at 7:00 AM, Gary Gregory garyvk...@gmail.com wrote: *Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 * On 22 September 2012 03:10, Joe Subich, W4TV li...@subich.com wrote: How about allowing use of the FM filter for AM and ESSB transmit? 73, ... Joe, W4TV On 9/21/2012 11:11 AM, Wayne Burdick wrote: Can I ask ELECRAFT what's next on the list for the K3 firmware improvements we can expect... Hi Gordan, Best guess: - improved CW decode at all AGC settings - support for KAT500 antenna switching from the K3 - bug fixes related to remote rig communications (K3/0) There have also been many requests for minor changes, some of which I'll be adding. I can't say yet which ones will make the next cut. 73, Wayne N6KR __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ 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
Re: [Elecraft] (Elecraft) XG3 RF generator software port selection
Nels, I'm using the KXUSB USB interface that came with my KX3. It works as advertised with my XG3 to the XG3 Utility. I have used both chip-sets for USB interfaces in the past with my XP laptop so there was no driver downloads to deal with. The XG3 Utility will list the available com ports and it is just a matter of finding the one that works. That will be the one that connects. I would think it normal for the Utility to not list a com port if you did not yet have an USB to RS-232 interface. My laptop lists 2 com ports. The one for the P3/K3 the one for KX3 or XG3; both are USB to RS-232 - one DB-9 the other a mini-phone plug. George AI4VZ -Original Message- From: Nels Nelsen Has any one gotten the XG3 RF generator to talk to a laptop just thru a USB port? I am useing a Windows XP laptop which does not have the old style com-port 1 with a db-9 connector, it just has the modern USB ports. __ 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] New beta K3 firmware!
Seconded. I would love to have room for an 1.0 (for digimodes) and 200 (weak/QRM CW) filter in addition to my lineup of FM, AM, 2.8, 2.1, and 400. 73, Thomas M0TRN On 22 September 2012 00:38, VE3GNO Daniel yo3...@yahoo.com wrote: Hi All, I dream one day to see Elecraft building some kind of expansion slot to accomodate more filters. Now all my slots are filled, 200/400/2.1k/2.8k/FM x2 for both RXs so no more free slots for AM or any other filter. I don't care too much abt AM filter but I would like to squeeze two more filters, maybe a 800 and 1.5k filter. Wayne, do you see technical possible to accomodate some sort of optional expansion filter slot? I am sure many of us will welcome such feature. If will ever be such an option but me on alpha/beta testing on top of your list. Tnx and 73 de VE3GNO Daniel __ 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] KX3 Intermittent changes in audio gain
There is one recommended in that doc I authored - the one posted on the Elecraft manuals section. 73, matt On Fri, 21 Sep 2012 16:24:43 -0700, you wrote: Any recommendation or specific brand or place to purchase one for a KX3. Appreciate the sharing of knowledge. Thanks, Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 4:19 PM, Matt Zilmer mzil...@verizon.net wrote: Yup. All you have to do is stabilize the power supply at the K3. I recommend a DC-DC converter for this. 73, matt W6NIA On Fri, 21 Sep 2012 14:22:26 -0700, you wrote: Matt That's exactly what has happened I saw the high current flash I didn't see it before because I was driving but I just saw it now so I think there's a positive correlation. Thank you very much for the insight! Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 7:18 AM, Matt Zilmer mzil...@verizon.net wrote: The KX3 probably detected a HI CUR condition. This can happen because of high (or low) PS voltage due to automotive electrical fluctuations. Sometimes this can happen because of ground current with the antenna connected, so check this for a positive correlation. You should not see HI CUR while on the KX3's internal batteries. This proves the automotive supply is caused it. When the KX3 sees HI CUR (usually something higher than 300 mA on RX), it will flash that HI CUR message on VFO A. If the condition persists, it will drop the AF gain to some predetermined value. If the condition continues beyond that point, the KX3 will shut itself off to protect itself. In my own case, both the AF gain and self-shutdown events were happening. HI CUR is preventable in a mobile setting - see below. I produced a pretty good document on KX3 mobile ops, which I'm about to add to. It's posted on the Elecraft web site at http://www.elecraft.com/K2_Manual_Download_Page.htm#kx3_mobile. Keith, I saw that same type of problem while mobile with KX3 #6 right up until I installed a DC-DC converter. See the doc for details of all that. 73, matt W6NIA KX3 #6, K3 #24, etc. On Fri, 21 Sep 2012 05:45:18 -0700, you wrote: I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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
[Elecraft] KPA500 Problem
I put my new KPA500 (s/n 1057) together earlier this week and have been loving it, although it has seen only light use so far. However, that changed this afternoon. I used it briefly on 40m LSB a few hours ago and all was fine. About 35w of drive for 550w out. I just retuned the antenna to the low end of the band, yielding a 1.0:1 SWR at the K3 in the standby mode of the KPA500. When I switched the amp to operate and keyed the transmitter (tune control), the amp power LEDs jumped up to about 500w and then went to 0. Subsequent keying show a very high SWR at the K3 (65 to 99:1) and the K3 puts out no power as does the KPA500. I tried a dummy load with the same result. If the amp is in standby mode the K3 acts right and the power and SWR LEDs on the KPA500 act right (100w out at a low SWR). Putting the amp into operate mode acts like the input SWR is very high. I tried tightening up the cables at both ends (BTW, I am using the control cable between the rig and amp for maximum integration, and the K3 knows to reduce the power out when the amp is in operate). I hope I am doing something wrong, and the fix is simple. Any suggestions of where to begin? Thank you. 73, Phil, NS7P __ 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] KX3 Intermittent changes in audio gain
We're on (anniversary) travel, but found the doc here on the laptop: In Figure 2, take a close look at the KX3's DC power input. The DC to DC converter shown eliminates whatever power impurities remain at this end of the interior DC branch circuit. Being a boost-buck regulator, the converter can accept a wide range of input voltages and produces a steady 13.8VDC (adjustable). The converter used in this example installation is made by QSKJ (model QS-1212CCBA-80W). In addition to cleaning up the DC, the converter reduces voltage sag from the smaller gauge interior wiring. In order to prevent the converter from introducing its own emissions, a Laird LFB174095 ferrite core was used with 3 turns of the KX3's stock cable. This killed all converter emissions. See http://ca.picclick.com/DC-DC-Converter-QS-1212CCBA-80W-Power-Supply-251036051706.html. 73, matt On Fri, 21 Sep 2012 16:24:43 -0700, you wrote: Any recommendation or specific brand or place to purchase one for a KX3. Appreciate the sharing of knowledge. Thanks, Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 4:19 PM, Matt Zilmer mzil...@verizon.net wrote: Yup. All you have to do is stabilize the power supply at the K3. I recommend a DC-DC converter for this. 73, matt W6NIA On Fri, 21 Sep 2012 14:22:26 -0700, you wrote: Matt That's exactly what has happened I saw the high current flash I didn't see it before because I was driving but I just saw it now so I think there's a positive correlation. Thank you very much for the insight! Keith AG6AZ Sent from my iPhone please excuse typos On Sep 21, 2012, at 7:18 AM, Matt Zilmer mzil...@verizon.net wrote: The KX3 probably detected a HI CUR condition. This can happen because of high (or low) PS voltage due to automotive electrical fluctuations. Sometimes this can happen because of ground current with the antenna connected, so check this for a positive correlation. You should not see HI CUR while on the KX3's internal batteries. This proves the automotive supply is caused it. When the KX3 sees HI CUR (usually something higher than 300 mA on RX), it will flash that HI CUR message on VFO A. If the condition persists, it will drop the AF gain to some predetermined value. If the condition continues beyond that point, the KX3 will shut itself off to protect itself. In my own case, both the AF gain and self-shutdown events were happening. HI CUR is preventable in a mobile setting - see below. I produced a pretty good document on KX3 mobile ops, which I'm about to add to. It's posted on the Elecraft web site at http://www.elecraft.com/K2_Manual_Download_Page.htm#kx3_mobile. Keith, I saw that same type of problem while mobile with KX3 #6 right up until I installed a DC-DC converter. See the doc for details of all that. 73, matt W6NIA KX3 #6, K3 #24, etc. On Fri, 21 Sep 2012 05:45:18 -0700, you wrote: I had this happen to me during mobile operations and not sure why either. Signals dropped right out and then when I turned off the radio for a few minutes and when i turned on the KX3 it went back to where it was prior and remained that way. I will keep an eye on it to see if it happens again. Keith AG6AZ Sent from my iPhone please excuse typos On Sep 20, 2012, at 7:43 PM, Kevin Luxford elelist...@elitemail.org wrote: Hi Guys, My KX3 has just developed an apparent fault - the audio level changes abruptly every few seconds from a comfortable listening level to quiet, but still audible. I am using my Proset headphones. Any thoughts on where I should start looking? I am nervous about poking around surface mount circuits! vy 73 Kevin VK3DAP / ZL2DAP __ 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] KPA500 Problem
Is this behavior present on all bands or just 40 meters? You might try using the KPA500 without the control cable, as well. 73, Scott, N9AA On 9/21/12 8:01 PM, Phillip Shepard wrote: I put my new KPA500 (s/n 1057) together earlier this week and have been loving it, although it has seen only light use so far. However, that changed this afternoon. I used it briefly on 40m LSB a few hours ago and all was fine. About 35w of drive for 550w out. I just retuned the antenna to the low end of the band, yielding a 1.0:1 SWR at the K3 in the standby mode of the KPA500. When I switched the amp to operate and keyed the transmitter (tune control), the amp power LEDs jumped up to about 500w and then went to 0. Subsequent keying show a very high SWR at the K3 (65 to 99:1) and the K3 puts out no power as does the KPA500. I tried a dummy load with the same result. If the amp is in standby mode the K3 acts right and the power and SWR LEDs on the KPA500 act right (100w out at a low SWR). Putting the amp into operate mode acts like the input SWR is very high. I tried tightening up the cables at both ends (BTW, I am using the control cable between the rig and amp for maximum integration, and the K3 knows to reduce the power out when the amp is in operate). I hope I am doing something wrong, and the fix is simple. Any suggestions of where to begin? Thank you. 73, Phil, NS7P __ 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] New beta K3 firmware!
Maybe I'll put the feature in and let you be my guinea pig, Joe. One complaint about noise bandwidth and it comes back out ;) Wayne On Sep 21, 2012, at 4:20 PM, Joe Subich, W4TV wrote: This in-band noise pedestal could be 20-30 dB above the normal transmit noise floor if you were using a lot of mic gain and/or compression. If you were using high power in these modes, your signal would now be much more likely to bring up the receive noise floor at nearby stations. It would seem that the same argument would be made against using the 2.7 or 2.8 KHz filters for CW or digital modes that have a transmit bandwidth of 50 to 100 Hz. Why generate an excessively wide 3 KHz noise pedestal for CW or PSK31/63 or even FSK RTTY (300 Hz required)? This is all academic since it is easy - although very inconvenient - to set FL1 BW to 6.00 with the FM filter to enable AM/ESSB and return it to 13.00 to go back to FM. The real issue is that any user with three narrow filters for SSB and CW/Digital is precluded from using both FM and AM/ESSB without playing games with FL1 BW. 73, ... Joe, W4TV On 9/21/2012 6:40 PM, Wayne Burdick wrote: The 6 kHz filter band-limits the transmit noise originating from the DAC and the transmit mixer to a bandwidth appropriate for AM and ESSB modes. The 15 kHz filter would allow a noise bandwidth over twice as wide. This in-band noise pedestal could be 20-30 dB above the normal transmit noise floor if you were using a lot of mic gain and/or compression. If you were using high power in these modes, your signal would now be much more likely to bring up the receive noise floor at nearby stations. Do you really want to create a 15-kHz wide swath of broadband noise when using ESSB or AM? I don't. That's why I haven't modified the code to allow use of the FM filter for this purpose. I suppose it could be YAMU (yet another menu entry), forcing you to do at least a minimum amount of soul-searching before going broadband :) 73, Wayne N6KR On Sep 21, 2012, at 3:09 PM, Thomas Horsten wrote: Hi Gary, The point is not to widen the SSB but to use the FM crystal filter to limit it. The DSP does the actual shaping of the TX signal which will still be the same width regardless of whether you're using the 6kHz filter or the 12.5kHz FM one. The idea is to be able to use the FM filter for AM and ESSB as well instead of filling up two precious filter slots, when what you may want/need are closer filters on the low end (say, 400 and 200 Hz). 73, Thomas M0TRN On 21 September 2012 22:00, Gary Gregory garyvk...@gmail.com wrote: Joe, I have to ask, why? In VK we have a 3Khz SSB BW written into our LCD's and yet some folks consume 10Khz out here on a net which tears up a considerable amount of spectrum. What advantage do you see to widen the ESSB? Not sure I follow your thoughts here, hence the question Joe. 73 __ 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 __ 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] New beta K3 firmware!
My feeling is that if you have the 8 pole 2.8 kHz filter installed, the 2.1 kHz filter is probably redundant for vast majority of applications. 73, Scott, N9AA Seconded. I would love to have room for an 1.0 (for digimodes) and 200 (weak/QRM CW) filter in addition to my lineup of FM, AM, 2.8, 2.1, and 400. 73, Thomas M0TRN On 22 September 2012 00:38, VE3GNO Daniel yo3...@yahoo.com wrote: Hi All, I dream one day to see Elecraft building some kind of expansion slot to accomodate more filters. Now all my slots are filled, 200/400/2.1k/2.8k/FM x2 for both RXs so no more free slots for AM or any other filter. I don't care too much abt AM filter but I would like to squeeze two more filters, maybe a 800 and 1.5k filter. Wayne, do you see technical possible to accomodate some sort of optional expansion filter slot? I am sure many of us will welcome such feature. If will ever be such an option but me on alpha/beta testing on top of your list. Tnx and 73 de VE3GNO Daniel __ 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] New beta K3 firmware!
I couldnt disagree more, I use the 2.1k most followed by the 1.8k in ssb. I never see/hear a need to go wider than 2.1k other than to appreciate Johnny Broadcasters new $1000 studio mic. I use the 2.8k std req for TX. On 22/09/2012 1:59, Scott Manthe wrote: My feeling is that if you have the 8 pole 2.8 kHz filter installed, the 2.1 kHz filter is probably redundant for vast majority of applications. 73, Scott, N9AASeconded. I would love to have room for an 1.0 (for digimodes) and 200 (weak/QRM CW) filter in addition to my lineup of FM, AM, 2.8, 2.1, and 400. 73, Thomas M0TRN On 22 September 2012 00:38, VE3GNO Danielyo3...@yahoo.com wrote: Hi All, I dream one day to see Elecraft building some kind of expansion slot to accomodate more filters. Now all my slots are filled, 200/400/2.1k/2.8k/FM x2 for both RXs so no more free slots for AM or any other filter. I don't care too much abt AM filter but I would like to squeeze two more filters, maybe a 800 and 1.5k filter. Wayne, do you see technical possible to accomodate some sort of optional expansion filter slot? I am sure many of us will welcome such feature. If will ever be such an option but me on alpha/beta testing on top of your list. Tnx and 73 de VE3GNO Daniel __ 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] New beta K3 firmware!
I would use the FM filter for AM receive and the AM filter for ESSB receive. I used to do it all the time for listening to shortwave broadcasts on my JRC NRD-535. If the are no adjacent channel signals, you get full fidelity. Don NA6Z K3 KPA500 On Fri, Sep 21, 2012 at 2:57 PM, Adrian vk4...@bigpond.com wrote: I see Joe's point exactly to enable the 13k filter for more diverse usage, which would suit me perfectly instead of 'tricking' the K3 or am/fm use not just FM. The ESSB is just another thing it does, but the AM is what I want also. __ 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] New beta K3 firmware!
Blush, I just read the other thread with the same subject line. I gotta stop thinking IF filters. Yep, you'd need to play with the DSP bandwidth too. On Fri, Sep 21, 2012 at 9:11 PM, Don Putnick don.putnick.n...@gmail.comwrote: I would use the FM filter for AM receive and the AM filter for ESSB receive. I used to do it all the time for listening to shortwave broadcasts on my JRC NRD-535. If the are no adjacent channel signals, you get full fidelity. Don NA6Z K3 KPA500 On Fri, Sep 21, 2012 at 2:57 PM, Adrian vk4...@bigpond.com wrote: I see Joe's point exactly to enable the 13k filter for more diverse usage, which would suit me perfectly instead of 'tricking' the K3 or am/fm use not just FM. The ESSB is just another thing it does, but the AM is what I want also. __ 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
