Re: [Elecraft] K3 Sub-receiver use
Hi Alan, If modifications are not too heavy, it's not a problem; but i don't like to take the risk of performances degradation of the initial configuration. That's the reason the 1st time i've opened my K3 was for recent 8poles filter installation and removing of original 2k7 5poles. No risk for performance degradation! For the 6m occasional phone use during apertures i would not get lower perf on other bands, used over 95% of time, and where i'm totally satisfied. Nevertheless, i will read the informations you have communicated with great interest. In any case, as the IF input frequency is SW defined, i can use the ordered P3 with an other rig (with compatible IF output or modified). To conclude this thread, i must admit that MY error was to think that IF output (for the P3 in this case) was selectable between 2 identical receivers Main and Sub Should have read better the docs and related infos! My best 73, Rudolf, HB9ARI PS It's not my habit to cancel an order (when it's possible) when i do a bad choice! I assume! In this case, the P3 is not a bad choice but i will use it in a different manner, until a supported modification? Alan Bloom wrote: Hi Rudolf, At the bottom of this message I will copy a posting from W3SZ on the LP-PAN email list that describes how he added IF output to his K3 sub-receiver. He used the Z1 buffer amp from Clifton Labs: http://www.cliftonlaboratories.com/z1_buffer_amp.htm If you don't mind modifying your K3, it looks like that should allow you to use the sub-receiver with a P3. When I get time I'll have to try it on my K3 and see how it works. Alan N1AL On Tue, 2010-05-25 at 22:01 +0200, hb9ari wrote: Hi Rich, Very bad news ! That was my 1st idea when ordering the P3 to use it for wide span use for phone mode. (50Mhz in priority during possible apertures) For digi mode, as JT65, the ~2kHz width of waterfall is 100% sufficient, because frequencies are well defined (for ex 14.076Mhz) I'm quite sure now that it was a bad idea to have ordered a P3 but, with your accurate explanation, i will renounce to the sub-receiver ordering (and roofing filters)! I regret that a P3 connection to the sub-rcvr is not possible, and, as i'm not an RF engineer, i don't understand the reason(s)! At my point of vue, it's not 100% correct to say that the KRX3 is like a 2nd receiver ! Just in time to stop for the KRX3 ordering but for the P3... may be eBay ? My best 73, Rudolf, HB9ARI Forwarded Message From: w3sz w...@comcast.net Reply-to: lp-...@yahoogroups.com To: lp-...@yahoogroups.com Cc: w...@comcast.net Subject: [LP-PAN] KRX3 IF tap up and running Date: Fri, 02 Jan 2009 00:56:35 -0500 Hi Larry, I didn't get a chance to hook up the LP-Pans yet [because the audio cables I need are up at my hilltop QTH], but I did install the KRX3 and its Z1 buffer amp, and both the main K3 IF output and the KRX3 subreceiver IF output seem to be working fine. I ran the main IF to the main receiver on my Flex5000 and the KRX3 subIF to the subreceiver on the Flex5000. Everything seems to be OK in terms of how I chose to get the IF from the KRX3. I am working a long day tomorrow as well as Saturday AM, but I am hoping to get a chance to run up to the hilltop and pick up the audio cables and then get the LP Pans hooked up Saturday afternoon. This is a brief summary of what I did with the KRX3: I used the Z1 as buffer amp inside the KRX3. I got +12V from a 12SA pad near to P86A. Power and RF connections to the Z1 were done from the underside of the Z1. I took IF output from KRX3 from P86A and used RG174U to take this to input of Z1. I mounted Z1 on an unused FL position using a 1/2 inch standoff. I mounted a dual female SMA connector in the REF hole at the bottom corner of the K3 just below the official IF out BNC. I then used a right angle premade small surplus coaxial cable to take the signal to the KRX3 and thus the Z1. I entered the KRX3 at the back left corner opposite to J92, because there was already an opening there. I ran the coax inside the KRX3 bottom shell, beneath the main KRX3 PCB. I brought it up to the Z1 by running it through an unused hole meant for an FL standoff. At first check, using the two subreceivers on the Flex5000 to receive the IF signals from the K3, the main K3 and the KRX3 subreceiver IF outputs seem to be equivalent. When constructing the Z1, I used the -U [Universal] options, not the K2 options. I chose to set it up for zero gain, and thus chose R907 to be 499 ohms, and R905 to be 4.7K, as per section 2.3.3 of the Z1 manual. I attached a jpg file with the two IFs from the K3 going to the Flex 5000. The K3 main IF goes to the main Flex receiver and the DRX3 sub IF goes to the Flex sub
Re: [Elecraft] K3 Sub-receiver use
Hi Mark, A very good new ! As answered to Alan, i will read these info and a great attention to your uploaded notes! Many thanks for sharing your experiences ! If there are no performances degradation on the main rcvr (IF feed trough, etc) i'm ready to envisage the jump ! 73 QRO Rudolf, HB9ARI Mark n2qt wrote: Rudolf, I used the info provided by W3SZ successfully and uploaded pictures and notes to the files section that may help you plan the modifications. http://groups.yahoo.com/group/Elecraft_K3/files/KRX3_IF_Out/addSubRX_IF.txt It works well! Mark n2qt - Original Message - From: Alan Bloom a...@elecraft.com To: hb9ari hb9...@bluewin.ch Cc: Elecraft-forum Elecraft@mailman.qth.net Sent: Tuesday, May 25, 2010 9:48 PM Subject: Re: [Elecraft] K3 Sub-receiver use Hi Rudolf, At the bottom of this message I will copy a posting from W3SZ on the LP-PAN email list that describes how he added IF output to his K3 sub-receiver. He used the Z1 buffer amp from Clifton Labs: http://www.cliftonlaboratories.com/z1_buffer_amp.htm If you don't mind modifying your K3, it looks like that should allow you to use the sub-receiver with a P3. When I get time I'll have to try it on my K3 and see how it works. Alan N1AL On Tue, 2010-05-25 at 22:01 +0200, hb9ari wrote: Hi Rich, Very bad news ! That was my 1st idea when ordering the P3 to use it for wide span use for phone mode. (50Mhz in priority during possible apertures) For digi mode, as JT65, the ~2kHz width of waterfall is 100% sufficient, because frequencies are well defined (for ex 14.076Mhz) I'm quite sure now that it was a bad idea to have ordered a P3 but, with your accurate explanation, i will renounce to the sub-receiver ordering (and roofing filters)! I regret that a P3 connection to the sub-rcvr is not possible, and, as i'm not an RF engineer, i don't understand the reason(s)! At my point of vue, it's not 100% correct to say that the KRX3 is like a 2nd receiver ! Just in time to stop for the KRX3 ordering but for the P3... may be eBay ? My best 73, Rudolf, HB9ARI Forwarded Message From: w3sz w...@comcast.net Reply-to: lp-...@yahoogroups.com To: lp-...@yahoogroups.com Cc: w...@comcast.net Subject: [LP-PAN] KRX3 IF tap up and running Date: Fri, 02 Jan 2009 00:56:35 -0500 Hi Larry, I didn't get a chance to hook up the LP-Pans yet [because the audio cables I need are up at my hilltop QTH], but I did install the KRX3 and its Z1 buffer amp, and both the main K3 IF output and the KRX3 subreceiver IF output seem to be working fine. I ran the main IF to the main receiver on my Flex5000 and the KRX3 subIF to the subreceiver on the Flex5000. Everything seems to be OK in terms of how I chose to get the IF from the KRX3. I am working a long day tomorrow as well as Saturday AM, but I am hoping to get a chance to run up to the hilltop and pick up the audio cables and then get the LP Pans hooked up Saturday afternoon. This is a brief summary of what I did with the KRX3: I used the Z1 as buffer amp inside the KRX3. I got +12V from a 12SA pad near to P86A. Power and RF connections to the Z1 were done from the underside of the Z1. I took IF output from KRX3 from P86A and used RG174U to take this to input of Z1. I mounted Z1 on an unused FL position using a 1/2 inch standoff. I mounted a dual female SMA connector in the REF hole at the bottom corner of the K3 just below the official IF out BNC. I then used a right angle premade small surplus coaxial cable to take the signal to the KRX3 and thus the Z1. I entered the KRX3 at the back left corner opposite to J92, because there was already an opening there. I ran the coax inside the KRX3 bottom shell, beneath the main KRX3 PCB. I brought it up to the Z1 by running it through an unused hole meant for an FL standoff. At first check, using the two subreceivers on the Flex5000 to receive the IF signals from the K3, the main K3 and the KRX3 subreceiver IF outputs seem to be equivalent. When constructing the Z1, I used the -U [Universal] options, not the K2 options. I chose to set it up for zero gain, and thus chose R907 to be 499 ohms, and R905 to be 4.7K, as per section 2.3.3 of the Z1 manual. I attached a jpg file with the two IFs from the K3 going to the Flex 5000. The K3 main IF goes to the main Flex receiver and the DRX3 sub IF goes to the Flex sub receiver. The signal is Radio Moscow on 40 meters. 73, Roger Rehr W3SZ http://www.nitehawk.com/w3sz __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list:
Re: [Elecraft] K3 Sub-receiver use
Hi Alan, No more a dream for me ! If i dare, you can put me on the list! 73 QRO, Rudolf, HB9ARI PS Excuse me for my bad mood ! I love too much MY K3... Alan Bloom wrote: Yes, the P3 assumes it is connected to the main receiver's IF output, so if it is actually connected to the sub-RX it would still work but would not display the correct frequencies and levels. If this becomes popular enough maybe we should think about adding sub-RX support to P3 firmware. Alan N1AL On Tue, 2010-05-25 at 23:50 -0400, Guy Olinger K2AV wrote: Wouldn't there be a K3 interoperating with P3 firmware issue with running the P3 on the sub-RX? Just because you could feed a **stand-alone** box with a non-company mod for sub-RX IF, does not mean the P3 would change the sub-RX with a click on the P3. There is a lot of proprietary communication between the K3 and the P3 over the serial connection. Wouldn't a sub-RX feed to a P3 need to be specifically supported by Elecraft firmware, both in K3 and P3? Last remarks from them in this thread were negative, particularly about isolation at a switch. That aside, I believe someone using the sub-RX with the TX in split, while leaving the main RX to feed the P3, would accomplish the same end. This WOULD be a problem on other rigs where the second RX is an inferior RX, or not available. In the K3 the sub-RX is a fully equal clone of the main RX, making various A/B flippity-do tricks possible without sacrificing performance in any way. 73, Guy. On Tue, May 25, 2010 at 9:48 PM, Alan Bloom a...@elecraft.com wrote: Hi Rudolf, At the bottom of this message I will copy a posting from W3SZ on the LP-PAN email list that describes how he added IF output to his K3 sub-receiver. He used the Z1 buffer amp from Clifton Labs: http://www.cliftonlaboratories.com/z1_buffer_amp.htm If you don't mind modifying your K3, it looks like that should allow you to use the sub-receiver with a P3. When I get time I'll have to try it on my K3 and see how it works. Alan N1AL On Tue, 2010-05-25 at 22:01 +0200, hb9ari wrote: Hi Rich, Very bad news ! That was my 1st idea when ordering the P3 to use it for wide span use for phone mode. (50Mhz in priority during possible apertures) For digi mode, as JT65, the ~2kHz width of waterfall is 100% sufficient, because frequencies are well defined (for ex 14.076Mhz) I'm quite sure now that it was a bad idea to have ordered a P3 but, with your accurate explanation, i will renounce to the sub-receiver ordering (and roofing filters)! I regret that a P3 connection to the sub-rcvr is not possible, and, as i'm not an RF engineer, i don't understand the reason(s)! At my point of vue, it's not 100% correct to say that the KRX3 is like a 2nd receiver ! Just in time to stop for the KRX3 ordering but for the P3... may be eBay ? My best 73, Rudolf, HB9ARI Forwarded Message From: w3sz w...@comcast.net Reply-to: lp-...@yahoogroups.com To: lp-...@yahoogroups.com Cc: w...@comcast.net Subject: [LP-PAN] KRX3 IF tap up and running Date: Fri, 02 Jan 2009 00:56:35 -0500 Hi Larry, I didn't get a chance to hook up the LP-Pans yet [because the audio cables I need are up at my hilltop QTH], but I did install the KRX3 and its Z1 buffer amp, and both the main K3 IF output and the KRX3 subreceiver IF output seem to be working fine. I ran the main IF to the main receiver on my Flex5000 and the KRX3 subIF to the subreceiver on the Flex5000. Everything seems to be OK in terms of how I chose to get the IF from the KRX3. I am working a long day tomorrow as well as Saturday AM, but I am hoping to get a chance to run up to the hilltop and pick up the audio cables and then get the LP Pans hooked up Saturday afternoon. This is a brief summary of what I did with the KRX3: I used the Z1 as buffer amp inside the KRX3. I got +12V from a 12SA pad near to P86A. Power and RF connections to the Z1 were done from the underside of the Z1. I took IF output from KRX3 from P86A and used RG174U to take this to input of Z1. I mounted Z1 on an unused FL position using a 1/2 inch standoff. I mounted a dual female SMA connector in the REF hole at the bottom corner of the K3 just below the official IF out BNC. I then used a right angle premade small surplus coaxial cable to take the signal to the KRX3 and thus the Z1. I entered the KRX3 at the back left corner opposite to J92, because there was already an opening there. I ran the coax inside the KRX3 bottom shell, beneath the main KRX3 PCB. I brought it up to the Z1 by running it through an unused hole meant for an FL standoff. At first check, using the two subreceivers on the Flex5000 to receive the IF signals from the K3, the main K3 and the KRX3 subreceiver IF outputs seem to be equivalent. When
[Elecraft] P3 IF frequency
The P3 IF input -is- user-defined and can be between 455 kHz and 21.7 mHz. The full specs of the P3 are on the Elecraft website. 73! Ken Kopp - K0PP elecraftcov...@rfwave.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 memory loss
Yes, that should work. The only issue is that my warped mind thinks of Sub Pri (Prime) - more nightmares ! 73 Stewart G3RXQ On Tue, 25 May 2010 14:46:19 -0400, drewko wrote: Perhaps Sub and Pri (for primary). 73, Drew AF2Z On Tue, 25 May 2010 10:47:24 -0700, Lyle KK7P wrote: Although Sub is obvious, I don't immediately associate RF with the Main RX. Main or even MN might be clearer I.M.H.O. It is hard to make an M in a 7-segment display such as is used for VFO A :-( We thought of A/b, 1/2, and others but RF/Sub seemed the best of the combinations we thought of... 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 50 MHz power knob behaviour
Hi dear K3 fans I experienced something that I do not know wether is normal or not. 14 MHz band: Power knob 0,1,2,3,4,5,6,7,8,9,10,11,12--- jump to --- 13, 14, 15 . and so on Watts. 50 MHz band: Power know 0,1,2,3,4,5,6,7,8 --- jump to --- 13, 14, 15. and so on Watts. ¿what happens with 9, 10, 11 and 12 Watts? Am I missing something? Thanks in advance Ramiro. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 IF frequency
Hi Ken rr ! I was not 100% sure ! But if modification is feasible, P3 will be better at K3's side! 73 QRO, Rudolf, HB9ARI Ken Kopp wrote: The P3 IF input -is- user-defined and can be between 455 kHz and 21.7 mHz. The full specs of the P3 are on the Elecraft website. 73! Ken Kopp - K0PP elecraftcov...@rfwave.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 50 MHz power knob behaviour
In a recent message, Ramiro Aceves ea1...@gmail.com said I experienced something that I do not know wether is normal or not. 14 MHz band: Power knob 0,1,2,3,4,5,6,7,8,9,10,11,12--- jump to --- 13, 14, 15 . and so on Watts. 50 MHz band: Power know 0,1,2,3,4,5,6,7,8 --- jump to --- 13, 14, 15. and so on Watts. ¿what happens with 9, 10, 11 and 12 Watts? Am I missing something? No, I don't think you are missing anything Ramiro; my K3 behaves in exactly the same way. 73 de David G4DMP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 50 MHz power knob behaviour
There is maybe some IMD issue on 50MHz in 9 - 12Watts range so mentioned levels skipped intentionally. Try to go through archives... 73! Lexa, ok1dst Dne 26.5.2010 12:35, David Pratt napsal(a): In a recent message, Ramiro Acevesea1...@gmail.com said I experienced something that I do not know wether is normal or not. 14 MHz band: Power knob 0,1,2,3,4,5,6,7,8,9,10,11,12--- jump to --- 13, 14, 15 . and so on Watts. 50 MHz band: Power know 0,1,2,3,4,5,6,7,8 --- jump to --- 13, 14, 15. and so on Watts. ¿what happens with 9, 10, 11 and 12 Watts? Am I missing something? No, I don't think you are missing anything Ramiro; my K3 behaves in exactly the same way. 73 de David G4DMP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 50 MHz power knob behaviour
Hello all, my K3 behaves same way like yours. Best 73. CT1DRB David Quental There is maybe some IMD issue on 50MHz in 9 - 12Watts range so mentioned levels skipped intentionally. Try to go through archives... 73! Lexa, ok1dst Dne 26.5.2010 12:35, David Pratt napsal(a): In a recent message, Ramiro Acevesea1...@gmail.com said I experienced something that I do not know wether is normal or not. 14 MHz band: Power knob 0,1,2,3,4,5,6,7,8,9,10,11,12--- jump to --- 13, 14, 15 . and so on Watts. 50 MHz band: Power know 0,1,2,3,4,5,6,7,8 --- jump to --- 13, 14, 15. and so on Watts. ¿what happens with 9, 10, 11 and 12 Watts? Am I missing something? No, I don't think you are missing anything Ramiro; my K3 behaves in exactly the same way. 73 de David G4DMP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 50 MHz power knob behaviour
Hi. there is info from May 04, 2008 We only allow up to 8 W with the lower-power amplifier stage on 6 meters to ensure plenty of headroom (i.e., low IMD). In an future firmware release we'll allow the high-power amplifier to cover the presently-missing range of 8-13 W. 73, Wayne N6KR - GL73! L. -dst- Dne 26.5.2010 13:22, David Quental napsal(a): Hello all, my K3 behaves same way like yours. Best 73. CT1DRB David Quental There is maybe some IMD issue on 50MHz in 9 - 12Watts range so mentioned levels skipped intentionally. Try to go through archives... 73! Lexa, ok1dst Dne 26.5.2010 12:35, David Pratt napsal(a): In a recent message, Ramiro Acevesea1...@gmail.com said I experienced something that I do not know wether is normal or not. 14 MHz band: Power knob 0,1,2,3,4,5,6,7,8,9,10,11,12--- jump to --- 13, 14, 15 . and so on Watts. 50 MHz band: Power know 0,1,2,3,4,5,6,7,8 --- jump to --- 13, 14, 15. and so on Watts. ¿what happens with 9, 10, 11 and 12 Watts? Am I missing something? No, I don't think you are missing anything Ramiro; my K3 behaves in exactly the same way. 73 de David G4DMP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 Sub-receiver use
Guy Olinger wrote: That aside, I believe someone using the sub-RX with the TX in split, while leaving the main RX to feed the P3, would accomplish the same end. Afraid not, Guy. Cross-band split is not supported, so the envisaged mode of operation (main RX on 6m feeding the P3, subRX and TX on HF) would not work. You could listen to the subRX on HF, but the TX would have to be on 6m. If the *only* purpose for the panadapter is to act as an indicator of activity on the 6m band, you would hardly need all the integration of a P3 anyway. There are other ways to tell when 6m is open, ranging from www.vhfdx.net/spots/map.php to a simple non-integrated CW Skimmer-type display (with a SoftRock, LP-PAN, etc. - this would still require the mod to the KRX3). That said, I think that once you have used an integrated panadapter, you might not want to give it up. You might find yourself wanting to use the panadapter full-time with the main RX and falling back on other methods to tell you what's happening on 6m, perhaps supplemented by leaving the subRX on the 6m calling frequency when you weren't using it on HF for split operation, diversity mode, etc. 73, Rich VE3KI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Sub-receiver use
G'day, -3dB if the sub-RX is enabled. Regards, Mike VP8NO - Original Message - From: Guy Olinger K2AV olin...@bellsouth.net To: a...@elecraft.com Cc: Elecraft-forum Elecraft@mailman.qth.net Sent: Tuesday, May 25, 2010 11:50 PM Subject: Re: [Elecraft] K3 Sub-receiver use That aside, I believe someone using the sub-RX with the TX in split, while leaving the main RX to feed the P3, would accomplish the same end. This WOULD be a problem on other rigs where the second RX is an inferior RX, or not available. In the K3 the sub-RX is a fully equal clone of the main RX, making various A/B flippity-do tricks possible without sacrificing performance in any way. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - using rear panel PTT In jack
I feel dumb asking this, because I know I've seen it somewhere, but which menu item is used to activate the rear panel PTT instead of either VOX or QSK? Or is it just a matter of de-selecting both of them? My Winkey has very nicely tailored hang time and lead time parameters, which I prefer to use instead of those built into the rig - how do I disable the built-in semi-break-in delay? -- 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - using rear panel PTT In jack
On Wed, May 26, 2010 at 7:03 AM, Pete Smith n...@contesting.com wrote: I feel dumb asking this, because I know I've seen it somewhere, but which menu item is used to activate the rear panel PTT instead of either VOX or QSK? Or is it just a matter of de-selecting both of them? My Winkey has very nicely tailored hang time and lead time parameters, which I prefer to use instead of those built into the rig - how do I disable the built-in semi-break-in delay? Hi Pete, The VOX button (HOLD the BAND-down button at the very top-left) toggles between VOX and PTT modes. ~Iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Sub-receiver use
On Tue, 2010-05-25 at 22:36 -0700, Brett Howard wrote: Can the P3 at least show where the sub RX is and its BW and what not if its on the same screen full of where the Main RX is? Yes, that's the way it works normally. Even though P3 is receiving the main receiver's IF output, there is a cursor on the screen to show where the sub receiver is tuned, assuming it is within the currently-displayed span. Alan N1AL ~Brett On Tue, 2010-05-25 at 21:25 -0700, Alan Bloom wrote: Yes, the P3 assumes it is connected to the main receiver's IF output, so if it is actually connected to the sub-RX it would still work but would not display the correct frequencies and levels. If this becomes popular enough maybe we should think about adding sub-RX support to P3 firmware. Alan N1AL On Tue, 2010-05-25 at 23:50 -0400, Guy Olinger K2AV wrote: Wouldn't there be a K3 interoperating with P3 firmware issue with running the P3 on the sub-RX? Just because you could feed a **stand-alone** box with a non-company mod for sub-RX IF, does not mean the P3 would change the sub-RX with a click on the P3. There is a lot of proprietary communication between the K3 and the P3 over the serial connection. Wouldn't a sub-RX feed to a P3 need to be specifically supported by Elecraft firmware, both in K3 and P3? Last remarks from them in this thread were negative, particularly about isolation at a switch. That aside, I believe someone using the sub-RX with the TX in split, while leaving the main RX to feed the P3, would accomplish the same end. This WOULD be a problem on other rigs where the second RX is an inferior RX, or not available. In the K3 the sub-RX is a fully equal clone of the main RX, making various A/B flippity-do tricks possible without sacrificing performance in any way. 73, Guy. On Tue, May 25, 2010 at 9:48 PM, Alan Bloom a...@elecraft.com wrote: Hi Rudolf, At the bottom of this message I will copy a posting from W3SZ on the LP-PAN email list that describes how he added IF output to his K3 sub-receiver. He used the Z1 buffer amp from Clifton Labs: http://www.cliftonlaboratories.com/z1_buffer_amp.htm If you don't mind modifying your K3, it looks like that should allow you to use the sub-receiver with a P3. When I get time I'll have to try it on my K3 and see how it works. Alan N1AL On Tue, 2010-05-25 at 22:01 +0200, hb9ari wrote: Hi Rich, Very bad news ! That was my 1st idea when ordering the P3 to use it for wide span use for phone mode. (50Mhz in priority during possible apertures) For digi mode, as JT65, the ~2kHz width of waterfall is 100% sufficient, because frequencies are well defined (for ex 14.076Mhz) I'm quite sure now that it was a bad idea to have ordered a P3 but, with your accurate explanation, i will renounce to the sub-receiver ordering (and roofing filters)! I regret that a P3 connection to the sub-rcvr is not possible, and, as i'm not an RF engineer, i don't understand the reason(s)! At my point of vue, it's not 100% correct to say that the KRX3 is like a 2nd receiver ! Just in time to stop for the KRX3 ordering but for the P3... may be eBay ? My best 73, Rudolf, HB9ARI Forwarded Message From: w3sz w...@comcast.net Reply-to: lp-...@yahoogroups.com To: lp-...@yahoogroups.com Cc: w...@comcast.net Subject: [LP-PAN] KRX3 IF tap up and running Date: Fri, 02 Jan 2009 00:56:35 -0500 Hi Larry, I didn't get a chance to hook up the LP-Pans yet [because the audio cables I need are up at my hilltop QTH], but I did install the KRX3 and its Z1 buffer amp, and both the main K3 IF output and the KRX3 subreceiver IF output seem to be working fine. I ran the main IF to the main receiver on my Flex5000 and the KRX3 subIF to the subreceiver on the Flex5000. Everything seems to be OK in terms of how I chose to get the IF from the KRX3. I am working a long day tomorrow as well as Saturday AM, but I am hoping to get a chance to run up to the hilltop and pick up the audio cables and then get the LP Pans hooked up Saturday afternoon. This is a brief summary of what I did with the KRX3: I used the Z1 as buffer amp inside the KRX3. I got +12V from a 12SA pad near to P86A. Power and RF connections to the Z1 were done from the underside of the Z1. I took IF output from KRX3 from P86A and used RG174U to take this to input of Z1. I mounted Z1 on an unused FL position using a 1/2 inch standoff. I mounted a dual female SMA connector in the REF hole at the bottom corner of the K3 just below the
Re: [Elecraft] K3 Sub-receiver use
On Tue, 25 May 2010 21:25:15 -0700, Alan Bloom a...@elecraft.com wrote: Ouch! Does this mean that the P3 will not display the frequency of or the signals seen by the KRX3? If that is true, it is a show stopper for me. TOM, N5GE BT 73 ES GUD LUK AR DE N5GE SK http://www.n5ge.com Yes, the P3 assumes it is connected to the main receiver's IF output, so if it is actually connected to the sub-RX it would still work but would not display the correct frequencies and levels. If this becomes popular enough maybe we should think about adding sub-RX support to P3 firmware. Alan N1AL [snip] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Sub-receiver use
The P3 is connected to the main receiver's IF output, so it is showing the signals being received by the main RX. However there is a cursor on the screen that shows the frequency and bandwidth of the sub-RX, as long as its frequency is within range of the currently-displayed span. That's exactly what you want as long as the main and sub are using the same antenna. If they are using different antennas then there may occasionally be a signal that could be heard on the sub-RX that doesn't appear on the P3, but that should be pretty rare. Alan N1AL On Wed, 2010-05-26 at 11:29 -0500, Radio Amateur N5GE wrote: On Tue, 25 May 2010 21:25:15 -0700, Alan Bloom a...@elecraft.com wrote: Ouch! Does this mean that the P3 will not display the frequency of or the signals seen by the KRX3? If that is true, it is a show stopper for me. TOM, N5GE BT 73 ES GUD LUK AR DE N5GE SK http://www.n5ge.com Yes, the P3 assumes it is connected to the main receiver's IF output, so if it is actually connected to the sub-RX it would still work but would not display the correct frequencies and levels. If this becomes popular enough maybe we should think about adding sub-RX support to P3 firmware. Alan N1AL [snip] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Sub-receiver use
The trick involved in that switch is a very high isolation between the two IF's (RXA and RXB) currently very nicely highly isolated. If that is degraded, then one starts hearing in one receiver the contents of the other. Not at all a trivial modification, as high isolation switches are not cheap. So I suspect dynamically selecting display on one RX or the other has a big price tag to it. And perhaps has an internal space price to it. I would think, however, that when installing a sub-RX, that perhaps it could be cabled and the K3 options set to use the sub-RX on the P3 all the time, WITHOUT opening the pandora's box of high-isolation switching of RX IF's. This would be in the same vein as choosing the RX paths when installing the sub-RX to start with. Without the time to think that through carefully, I'd currently chose that were it available. 73, Guy. On Wed, May 26, 2010 at 12:29 PM, Radio Amateur N5GE n...@n5ge.com wrote: On Tue, 25 May 2010 21:25:15 -0700, Alan Bloom a...@elecraft.com wrote: Ouch! Does this mean that the P3 will not display the frequency of or the signals seen by the KRX3? If that is true, it is a show stopper for me. TOM, N5GE BT 73 ES GUD LUK AR DE N5GE SK http://www.n5ge.com Yes, the P3 assumes it is connected to the main receiver's IF output, so if it is actually connected to the sub-RX it would still work but would not display the correct frequencies and levels. If this becomes popular enough maybe we should think about adding sub-RX support to P3 firmware. Alan N1AL [snip] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FM filter for AM
Hello friends: At this moment i don't own AM or FM filter. If i install FM filter can i use it for AM? Thank's a lot. -- Rubén Navarro Huedo - EA5BZ http://www.palotes.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] FM filter for AM
Ruben, Receive yes - transmit NO. I have mine set that way - I have no desire to transmit AM. 73, Don W3FPR Ruben Navarro Huedo wrote: Hello friends: At this moment i don't own AM or FM filter. If i install FM filter can i use it for AM? Thank's a lot. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Sub-receiver use
Like Roger, W3SZ, I will use my sub Rx on 2m eme with a transverter. Instead of the LP-Pan I will connect my SDR-IQ to the IF output for obtaining a panoramic display of up to 190-KHz of a band. This will be centered on the K3 IF frequency and track with it as I tune the K3. But I purchased the sub Rx option so that I could receive 2m from a second set of antennas that were polarized opposite the main Rx. This has some advantages in 2m eme which I will not go into. I do not recall the exact way you wanted to monitor 6m, but could you not do this with the main Rx plus P3 and use the sub Rx for the other band you wish to use? I haven't explored doing this, but can one transmit on a different band than one receives using the main Rx? Can one transmit and receive using the sub Rx? The main problem with this idea might be in antenna selection (but does not the antenna tuner allow for auto switching between Tx and Rx? I did not opt for the tuner so not enough familiar how it can be configured. In any case, it seems a shame to give up on your idea just be cause the radio is not equipped from the factory. The mod Roger uses does not appear to be that difficult, even if one has the find a fellow ham to help with the actual conversion. (But then I do lots of home construction) 73, Ed - KL7UW -- Message: 18 Date: Tue, 25 May 2010 18:48:20 -0700 From: Alan Bloom a...@elecraft.com Subject: Re: [Elecraft] K3 Sub-receiver use To: hb9ari hb9...@bluewin.ch Cc: Elecraft-forum Elecraft@mailman.qth.net Message-ID: 1274838500.1492.43.ca...@ulinux-desktop Content-Type: text/plain; charset=UTF-8 Hi Rudolf, At the bottom of this message I will copy a posting from W3SZ on the LP-PAN email list that describes how he added IF output to his K3 sub-receiver. He used the Z1 buffer amp from Clifton Labs: http://www.cliftonlaboratories.com/z1_buffer_amp.htm If you don't mind modifying your K3, it looks like that should allow you to use the sub-receiver with a P3. When I get time I'll have to try it on my K3 and see how it works. Alan N1AL On Tue, 2010-05-25 at 22:01 +0200, hb9ari wrote: Hi Rich, Very bad news ! That was my 1st idea when ordering the P3 to use it for wide span use for phone mode. ...snip... Just in time to stop for the KRX3 ordering but for the P3... may be eBay ? My best 73, Rudolf, HB9ARI snipped the attachment- 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010 DUBUS Magazine USA Rep dubus...@hotmail.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 K3 QRQ CW mode in the works
Any details yet? Steve N4LQ - Original Message - From: Wayne Burdick n...@elecraft.com To: elecraft@mailman.qth.net Sent: Sunday, May 16, 2010 8:01 PM Subject: [Elecraft] New K3 QRQ CW mode in the works I'm working on a new QRQ CW mode that will provide full break-in and improved timing accuracy at high CW speeds. Details later this week. Thanks for all the input on this topic. 73, Wayne, N6KR http://www.elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FM filter for AM
Yes, if you tell the K3 that the FM filter is 6 KHz and not 13 KHz. 73, ... Joe, W4TV On 5/26/2010 1:51 PM, Ruben Navarro Huedo wrote: Hello friends: At this moment i don't own AM or FM filter. If i install FM filter can i use it for AM? Thank's a lot. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 K3 QRQ CW mode in the works
Steve Ellington, N4LQ, wrote: Any details yet? Hi Steve, QRQ (high-speed CW) mode is working very well in tests so far, and we hope to do a beta release in the next couple of days. Both internal and external keying up to 100 WPM are possible, with full QSK (RX recovery between code elements) up to about 70 WPM. Many testers have described it as the best QSK they've ever used. I'll send you the present field-test revision. 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] K3 Order Delays?
Although the online page continues to indicate that K3 kit versions are being shipped in 3-5 days, I placed an order on Monday night and after querying the order got a reply that there are delays and shipping would not happen for 5-7 days. Problems, or just overloaded as a post-Dayton ordering frenzy? -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Order-Delays-tp5105426p5105426.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Order Delays?
Post Dayton ordering frenzy. :-) Plus Dayton was our best year ever. 73, Eric WA6HHQ --- On 5/26/2010 12:50 PM, Jim Bennett / W6JHB wrote: Although the online page continues to indicate that K3 kit versions are being shipped in 3-5 days, I placed an order on Monday night and after querying the order got a reply that there are delays and shipping would not happen for 5-7 days. Problems, or just overloaded as a post-Dayton ordering frenzy? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - SR2O
I am trying to set up my K3 for FD here in Eu in 10 days time. I have successfully used SR2O in the past with FT1kMPs but so far not with the K3. I have a splitter box which takes both Rx audio channels from the headphone socket and splits to one headset for main rx and another with sub rx. Neither operator should hear the other rx. This works perfectly with the FT1kMP but so far I can't get it to work with the K3. Any suggestions? Chris G3SJJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Order Delays?
OK - thanks for the update! Glad you had a great Dayton!! 73, Jim -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Order-Delays-tp5105426p5105628.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] N2CQ QRP Contest Calendar: June 2010
~ N2CQ QRP CONTEST CALENDAR June 2010 ~ CQWW WPX Contest (CW) ... QRP Category May 29, z to May 30, 2359z Rules: http://www.cqwpx.com/ ~ QRP ARCI Hoot Owl Sprint (CW) ... QRP Contest! May 30, 2000 to 2400 LOCAL TIME Rules: http://www.qrparci.org ~ Michigan QRP Memorial Day Sprint (CW) ... QRP Contest! May 31, 2300z to June 1, 0300z Rules: http://www.qsl.net/miqrpclub/contest.html ~ Digital Pentathlon (PSK) 50W Max June 5, 1800z to 2200z Rules: http://mixw.net/misc/DigiFest/ ~ Wake-Up! QRP Sprint (CW) *** QRP Contest *** June 5, 0600z to 0800z Rules: http://qrp.ru/modules/sections/index.php?op=viewarticleartid=7page=1 ~ IARU Region 1 Fieldday (CW) ... QRP Category June 5, 1500z to June 7, 1459z Rules: http://www.sk3bg.se/contest/iarur1fd.htm ~ Alabama QSO Party (Ph/CW) ... QRP Category June 5, 1600z to June 6, 0400z Rules: http://www.alabamaqsoparty.org/2010/2010Rules.pdf ~ Adventure Radio Spartan Sprint (CW) ... QRP Event! June 8 , 0100z to 0300z (First Monday 9 PM EDT) Info: http://adventure-radio.org/wiki/index.php?title=Main_Page ~ NAQCC Straight Key/Bug Sprint (CW) *** QRP Contest *** EDT: June 8, 8:30 PM to 10:30 PM UTC: June 9, 0030Z to 0230Z Rules: http://home.windstream.net/yoel/contests.html ~ CWops Mini-CWT Test (CW) ... QRP Category June 9, 1100z to 1200z and June 9, 1900z to 2000z and June 10, 0300z to 0400z Rules: http://www.cwops.org/onair.html ~ Long Distance RTTY Contest June 12, 0800z to 1559z June 13, z to 0759z June 13, 1500z to 2359z Rules: http://drcg.de/index.php?option=com_contenttask=viewid=124Itemid=84 ~ GACW WWSA CW DX Contest (CW) ... QRP Category June 12, 1500z to June 13, 1500z Rules: http://tinyurl.com/32mhw7l ~ ARRL June VHF QSO Party June 12, 1800z to June 14, 0300z Rules: http://www.arrl.org/june-vhf-qso-party ~ BARTG 75 Baud RTTY Sprint June 12, 2000z to 2359z Rules: http://www.bartg.org.uk/documents/Contests/sprint75/BARTG%20Sprint%2075%20Rules%202010.pdf ~ SKCC Weekend Sprintathon (Straight Key CW) ... QRP Category June 13, z to 2359z Rules: http://www.skccgroup.com/sprint/wes/ ~ West Virginia QSO Party (SSB/CW)... QRP Category June 19, 1600z to June 20, 0200z Rules: http://www.qsl.net/wvsarc/ ~ AGCW VHF/UHF CW Contest ... QRP Category June 19, 1600z to 1900z (144 Mhz) June 19, 1900z to 2100z (432 Mhz) Rules: http://www.agcw.org/en/?Contests:VHF-UHF_Contest ~ Feld Hell Club Sprint (Feld Hell) ... QRP Category Jun 19, 2000z to 2200z Rules: http://sites.google.com/site/feldhellclub/Home ~ RUN FOR THE BACON (CW) *** QRP CONTEST *** EDT: June 20, 9 PM to 11 PM UTC: June 21, 0100z 0300z Rules: http://www.fpqrp.com/ ~ SKCC Sprint (Straight Key CW) ... QRP Awards June 23, z to 0200z Rules: http://www.skccgroup.com/sprint/sks/ ~ Ukrainian DX Digi Contest (RTTY 75bps- PSK63) June 26, 1200z to June 27, 1200z Rules: http://www.izmail-dx.com/ ~ Marconi Memorial Contest (CW) ... QRP Category June 26, 1400z to June 27, 1400z Rules: http://www.arifano.it/Contest_Marconi.htm ~ ARRL Field Day (CW/SSB/RTTY)... QRP Category June 26, 1800z to June 27, 2100z Rules: http://www.arrl.org/field-day ~ QRP ARCI Milliwatt Field Day (ALL)... QRP Contest! June 26, 1800z to June 27, 2100z Rules: http://www.qrparci.org ~ Thanks to SM3CER, WA7BNM, N0AX(ARRL), VA3JFF G4GXL (QRPARCI) N2APB (AmQRP), WB3AAL (EPAQRP) and others for assistance in compiling this calendar. If you wish to subscribe to the Calendar, send an e-mail to n...@arrl.net Please
[Elecraft] No CW sidetone on K2
Hi, I added the KAT100 to my K2-100 and lost my cw sidetone. It was working find before I connected the tuner, and afterwards no transmit sidetone whatever. And I don't have a sidetone anymore when I completely disconnect the tuner. Any ideas about what I might have set on the menu system (or in the hardware itself) that turned it off? It transmits fine, tunes wonderfully, etc, but I can't hear myself keying. -- Bob/W4MKO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - SR2O
Make sure you have that you don't have CONFIG: L--MIX--R set to something other than A b. Possibilities are A b, Ab b, A Ab, Ab Ab. Also make sure that you have CONFIG: SUB AF set to nor. Also it is possible to set L-MIX-R via programming over the serial line from a program, so it could have been left in this state from running a logger, etc. If those are correct, make sure you don't have a wiring error. The headphone channels with the above settings are completely separate on my K3. 73, Guy. On Wed, May 26, 2010 at 4:14 PM, Chris G3SJJ g3...@btinternet.com wrote: I am trying to set up my K3 for FD here in Eu in 10 days time. I have successfully used SR2O in the past with FT1kMPs but so far not with the K3. I have a splitter box which takes both Rx audio channels from the headphone socket and splits to one headset for main rx and another with sub rx. Neither operator should hear the other rx. This works perfectly with the FT1kMP but so far I can't get it to work with the K3. Any suggestions? Chris G3SJJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 K3 QRQ CW mode in the works
Hi Wayne, please send it to me as well. Martin DK4XL EHSC #47 -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-QRQ-CW-mode-in-the-works-tp5063159p5106023.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] No CW sidetone on K2
Bob, It is quite likely that you inadvertently changed the sidetone source in the menu. The proper sidetone source for K2s above SN 3000 and all with either the KIO2 or the KPA100 installed is U8-4. First go into the menu for ST L and set the level to something you are bound to hear - try the range of 25 to 30. Now enter the menu for ST P and hold EDIT to edit the parameter. Then tap the DISPLAY button to toggle the sidetone source. Stop tapping when you hear sidetone, and exit the menu. If that does not produce sidetone for you, you may have a hardware problem. If your K2 serial number is less than 3000, check the back of the control board, you will see a wire going to U8-4, be certain it is securely soldered (see the KPA100 installation manual). Also if your SN is less than 3000, and the A to B upgrades have been installed, there is one resistor and a shielded inductor that have been added to the back of the board - make certain that they are properly in place (see the A to B upgrade instructions). If all that is intact and the source is correct, and you still do not have sidetone, you may have a firmware failure. 73, Don W3FPR R K Johnson wrote: Hi, I added the KAT100 to my K2-100 and lost my cw sidetone. It was working find before I connected the tuner, and afterwards no transmit sidetone whatever. And I don't have a sidetone anymore when I completely disconnect the tuner. Any ideas about what I might have set on the menu system (or in the hardware itself) that turned it off? It transmits fine, tunes wonderfully, etc, but I can't hear myself keying. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
I love this rig already! My wife was sure I was having an affair last night when I came in from my man cave just smiling ear to ear because my led backlight lit up, and I was able to play with the controls. I was most notably giddy when I aligned the VFO by manipulating the L1 toroidalI love electricity, but I digress. I am on page 40 doing the band-pass filter alignment. What does it mean to peak the inductors? I am not sure what I am looking for there. Thanks so much. Greg Doughty __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Congrats on passing your test! What you need is a USB to serial adapter. Several have been recommended on this reflector recently. Refer back to the archives. Elecraft even has one on their web site. Good luck and welcome! Dave K6DCH Sent from my iPhone On May 26, 2010, at 1:35 PM, ki4...@cox.net wrote: I love this rig already! My wife was sure I was having an affair last night when I came in from my man cave just smiling ear to ear because my led backlight lit up, and I was able to play with the controls. I was most notably giddy when I aligned the VFO by manipulating the L1 toroidalI love electricity, but I digress. I am on page 40 doing the band-pass filter alignment. What does it mean to peak the inductors? I am not sure what I am looking for there. Thanks so much. Greg Doughty __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Whoops. Replied to the wrong email. My reply was intended for Mike the new technician. Sorry about that! Dave K6DCH Sent from my iPhone On May 26, 2010, at 1:35 PM, ki4...@cox.net wrote: I love this rig already! My wife was sure I was having an affair last night when I came in from my man cave just smiling ear to ear because my led backlight lit up, and I was able to play with the controls. I was most notably giddy when I aligned the VFO by manipulating the L1 toroidalI love electricity, but I digress. I am on page 40 doing the band-pass filter alignment. What does it mean to peak the inductors? I am not sure what I am looking for there. Thanks so much. Greg Doughty __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Thanks, I thought something was up with that response! Greg Doughty On May 26, 2010, at 7:47 PM, David Herring, K6DCH da...@k6dch.com wrote: Whoops. Replied to the wrong email. My reply was intended for Mike the new technician. Sorry about that! Dave K6DCH Sent from my iPhone On May 26, 2010, at 1:35 PM, ki4...@cox.net wrote: I love this rig already! My wife was sure I was having an affair last night when I came in from my man cave just smiling ear to ear because my led backlight lit up, and I was able to play with the controls. I was most notably giddy when I aligned the VFO by manipulating the L1 toroidalI love electricity, but I digress. I am on page 40 doing the band-pass filter alignment. What does it mean to peak the inductors? I am not sure what I am looking for there. Thanks so much. Greg Doughty __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Greg, You will peak the inductors two times - first in receive to get then into the approximate correct position, and then in transmit for the final setting. NOTE WELL - you will peak the inductors if you have the 2 band board, but if you have the 4 band board, you will be peaking the capacitive trimmers instead - and for the 4 band board, follow the band order - 30 meters must be peaked before 40 meters and 15/17 meters must be peaked before 20 meters. OK, what does peaking mean - for receive, you will simply adjust for maximum signal (or band noise if you cannot hear any signals) You can use another QRP transmitter running into a dummy load as a signal source, or if you have a signal generator, that is ideal - listen to the signal and adjust the inductors (or capacitors for the 4 band board) to achieve the strongest received signal On transmit, things are a bit easier - you have already pre-set the tuning during receive, so this is just a matter of refining the tuning - in other words, you should not have to move the adjustment very far. Set the power (menu OUT parameter) to about 1.5 watts, and then adjust for the maximum power output. Problem - if the power output rises to more than 5 watts, the peak will hide. and you will reach the power output capability of the transistors rather than finding the peak, so exit TUNE and re-enter (or in the case of the K1, often repetitively tapping the WPM- button will reduce the power) keep the power level low so you can discern the peak. You will find a point where the power output increases, and then decreases as you adjust the inductor (or capacitor). The point in between where the power is maximum is the peak that you are searching for. 73, Don W3FPR ki4...@cox.net wrote: I love this rig already! My wife was sure I was having an affair last night when I came in from my man cave just smiling ear to ear because my led backlight lit up, and I was able to play with the controls. I was most notably giddy when I aligned the VFO by manipulating the L1 toroidalI love electricity, but I digress. I am on page 40 doing the band-pass filter alignment. What does it mean to peak the inductors? I am not sure what I am looking for there. Thanks so much. Greg Doughty __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Greg, You can use XG2 kit from Elecraft as a signal source for K1 on 80m, 40m and 20m bands (it'll also give you a chance to adjust S-meter as well). 80m might be a little problematic if you selected 80kHz tuning range because it is close to the upper end of the band, but you should still be able to use it unless your VFO is misaligned. Or you could use N-gen kit too, but be careful with it - it's easy to adjust all filters on receive so it will look like you reached the peak, while in reality your IF will not align properly with center frequency of crystal filters. This is because it produces relatively strong noise signal. If that happens (the giveaway is that you can hear noise generator, but nothing from the antenna) - move all adjustments for the problematic band to their neutral positions and start over. But the easiest method is to use another QRP rig or a signal generator as a signal source. On Wed, May 26, 2010 at 5:19 PM, Don Wilhelm w3...@embarqmail.com wrote: Greg, You will peak the inductors two times - first in receive to get then into the approximate correct position, and then in transmit for the final setting. NOTE WELL - you will peak the inductors if you have the 2 band board, but if you have the 4 band board, you will be peaking the capacitive trimmers instead - and for the 4 band board, follow the band order - 30 meters must be peaked before 40 meters and 15/17 meters must be peaked before 20 meters. OK, what does peaking mean - for receive, you will simply adjust for maximum signal (or band noise if you cannot hear any signals) You can use another QRP transmitter running into a dummy load as a signal source, or if you have a signal generator, that is ideal - listen to the signal and adjust the inductors (or capacitors for the 4 band board) to achieve the strongest received signal On transmit, things are a bit easier - you have already pre-set the tuning during receive, so this is just a matter of refining the tuning - in other words, you should not have to move the adjustment very far. Set the power (menu OUT parameter) to about 1.5 watts, and then adjust for the maximum power output. Problem - if the power output rises to more than 5 watts, the peak will hide. and you will reach the power output capability of the transistors rather than finding the peak, so exit TUNE and re-enter (or in the case of the K1, often repetitively tapping the WPM- button will reduce the power) keep the power level low so you can discern the peak. You will find a point where the power output increases, and then decreases as you adjust the inductor (or capacitor). The point in between where the power is maximum is the peak that you are searching for. 73, Don W3FPR ki4...@cox.net wrote: I love this rig already! My wife was sure I was having an affair last night when I came in from my man cave just smiling ear to ear because my led backlight lit up, and I was able to play with the controls. I was most notably giddy when I aligned the VFO by manipulating the L1 toroidalI love electricity, but I digress. I am on page 40 doing the band-pass filter alignment. What does it mean to peak the inductors? I am not sure what I am looking for there. Thanks so much. Greg Doughty -- Alexey Kats (neko) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - Quiet fan part number
I've previously posted that the fans in my K3 (S/N 0056) is very quiet ... silent, really ... and several have asked for the fan part number(s). I installed the new I/OF upgrade today and while I had the radio apart I noted the fan information. The manufacturer is ÉLINA FAN and the part number is HDF6015L-12LB-1. 73! Ken Kopp - K0PP elecraftcov...@rfwave.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] order of construction for k3
Hi I have the 2nd rx, dvr and xv3 ready to install preparatory for the arrival of the p3. I want to install all 3 in one go. The manuals are written as if you were starting from scratch each time. Could someone (maybe who has already done this) give me some advise of the sequence of approach given that I want to do all 3 installations in one go Mni Tnx 73 de zl1any -- Stephen Pearce Critical Care Whangarei ph 021 390 997 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Alexey, Using the noise source or dead band noise with the K1-4 is problematic for the 15/17 meter and 20 meter bands. The real world situation is that it is possible to tune the 15/17 meter Pre-Mixer bandpass trimmers to the region of 29 MHz rather than 23 MHz. The usual result is that 20 meters cannot be tuned properly (and the frequency that 15/17 meters is tuned to is incorrect). The way to avoid that situation is to use a known signal source when tuning 15/17 meters. The manual states that the initial position for the Trimmer capacitors is to be with the slots parallel with the long side of the board. The final adjustment ot the trimmers will be no further than 20 degrees away from that position. If the 'peak' occurs further away from that range, it is at the wrong point. Using a signal source of a known frequency will avoid this problem, but using a wideband noise source can certainly produce this false response. Note that this condition does not occur as readily with the 2 band board. 73, Don W3FPR Alexey Kats wrote: Greg, You can use XG2 kit from Elecraft as a signal source for K1 on 80m, 40m and 20m bands (it'll also give you a chance to adjust S-meter as well). 80m might be a little problematic if you selected 80kHz tuning range because it is close to the upper end of the band, but you should still be able to use it unless your VFO is misaligned. Or you could use N-gen kit too, but be careful with it - it's easy to adjust all filters on receive so it will look like you reached the peak, while in reality your IF will not align properly with center frequency of crystal filters. This is because it produces relatively strong noise signal. If that happens (the giveaway is that you can hear noise generator, but nothing from the antenna) - move all adjustments for the problematic band to their neutral positions and start over. But the easiest method is to use another QRP rig or a signal generator as a signal source. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Among other reasons, many top lowband and weak signal operators disable AGC, turn the AF gain to nearly full and control the volume using the RF gain. This procedure optimizes signal to noise ratio in high ambient noise conditions. If the sidetone (or monitor) were tied to the AF Gain control it would be excessively loud - potentially to the point of damaging hearing. Providing an independent, front panel adjustment of the sidetone/monitor is the appropriate approach to maximize user flexibility. 73, ... Joe, W4TV On 5/26/2010 8:37 PM, Toby Pennington wrote: I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] order of construction for k3
The KXV3 is a back panel install, I'd do that first. You'll need to remove the front panel board to install the 2nd receiver Aux DSP board and the KDVR3. Install both the Aux DSP board from the 2nd receiver and the KDVR3 board while the front panel is open. You can reinstall the front panel and not enable the 2nd receiver (leave the KRX3 menu option disabled for a bit). You can enable and test the KDVR3. Then install the sub receiver RF board (the l-shaped one in the steel can) last, and then enable the KRX3 menu option. YMMV, but that's how I'd do it. Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of stephen pearce Sent: Wednesday, May 26, 2010 5:51 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] order of construction for k3 Hi I have the 2nd rx, dvr and xv3 ready to install preparatory for the arrival of the p3. I want to install all 3 in one go. The manuals are written as if you were starting from scratch each time. Could someone (maybe who has already done this) give me some advise of the sequence of approach given that I want to do all 3 installations in one go Mni Tnx 73 de zl1any -- Stephen Pearce Critical Care Whangarei ph 021 390 997 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] order of construction for k3
Stephen, I do not believe there is any conflict, or preferred order. The DVR fits onto the Front Panel/DSP assembly, the XV3 fits onto the back panel, and the 2nd RX fits in the middle of everything. Because of the KRX3 antenna connector in close proximity to the KXV3, it would be helpful to install the KRX3 while the KXV3 is removed. But that is just a subjective observation - the only problem is the plugging of the TMP cable into the KRX3 ant input - it is at an angle that makes it easier with the rear panel assembly out of the way. 73, Don W3FPR stephen pearce wrote: Hi I have the 2nd rx, dvr and xv3 ready to install preparatory for the arrival of the p3. I want to install all 3 in one go. The manuals are written as if you were starting from scratch each time. Could someone (maybe who has already done this) give me some advise of the sequence of approach given that I want to do all 3 installations in one go Mni Tnx 73 de zl1any __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Don, You are absolutely right - the biggest trouble I had with my K1-4 was on 17m band. With 20m I used XG2, but for 17m I ended up tuning it after transmitter was fully built - I first tuned it roughly on low power transmit with dummy load and watt meter, then using noise generator on receive (with attenuator on), then again with watt meter on transmit. And as a result I had to re-tune 20m again. On Wed, May 26, 2010 at 6:04 PM, Don Wilhelm w3...@embarqmail.com wrote: Alexey, Using the noise source or dead band noise with the K1-4 is problematic for the 15/17 meter and 20 meter bands. The real world situation is that it is possible to tune the 15/17 meter Pre-Mixer bandpass trimmers to the region of 29 MHz rather than 23 MHz. The usual result is that 20 meters cannot be tuned properly (and the frequency that 15/17 meters is tuned to is incorrect). The way to avoid that situation is to use a known signal source when tuning 15/17 meters. The manual states that the initial position for the Trimmer capacitors is to be with the slots parallel with the long side of the board. The final adjustment ot the trimmers will be no further than 20 degrees away from that position. If the 'peak' occurs further away from that range, it is at the wrong point. Using a signal source of a known frequency will avoid this problem, but using a wideband noise source can certainly produce this false response. Note that this condition does not occur as readily with the 2 band board. 73, Don W3FPR Alexey Kats wrote: Greg, You can use XG2 kit from Elecraft as a signal source for K1 on 80m, 40m and 20m bands (it'll also give you a chance to adjust S-meter as well). 80m might be a little problematic if you selected 80kHz tuning range because it is close to the upper end of the band, but you should still be able to use it unless your VFO is misaligned. Or you could use N-gen kit too, but be careful with it - it's easy to adjust all filters on receive so it will look like you reached the peak, while in reality your IF will not align properly with center frequency of crystal filters. This is because it produces relatively strong noise signal. If that happens (the giveaway is that you can hear noise generator, but nothing from the antenna) - move all adjustments for the problematic band to their neutral positions and start over. But the easiest method is to use another QRP rig or a signal generator as a signal source. -- Alexey Kats (neko) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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? KXV3A RX Ant, IF Out Xvrtr Int question using LP-PAN, w/ Rev. B RF board
Hi- I read that K3 RF boards (Rev. H3 and later) sold about 09/01/09 had a different value resistor, somewhere on the RF board that allowed for a 10dB increase in signal to the I.F. output for use with LP-PAN and other panadapters. My RF board is a rev. B. Elecraft has a kit with the correct resistor, its order number is K3IOBUFFKT. Does anyone happen to have the value of the resistor and Elecrafts' directions as to where it goes? I don't want to wait for Left Coast time if I don't have to. Thanks, Dave K1OPQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
Joe, thanks for the explanation. I am not a weak signal operator and just a rag chewer on cw. I QSO anyone I can hear, weak or strong but have never tried this approach. IF an op runs this way all the time then I can understand why he would want to set the sidetone to a dull roar. On the other hand, It would be nice to have the option of having the sidetone track the AF gain for those of us who are casual ops and then we would not have to continually be adjusting the side tone when going from headphones to speaker. Toby W4CAK - Original Message - From: Joe Subich, W4TV li...@subich.com To: Toby Pennington toby...@embarqmail.com; Elecraft Reflector elecraft@mailman.qth.net Sent: Wednesday, May 26, 2010 9:06 PM Subject: Re: [Elecraft] CW Sidetone Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Among other reasons, many top lowband and weak signal operators disable AGC, turn the AF gain to nearly full and control the volume using the RF gain. This procedure optimizes signal to noise ratio in high ambient noise conditions. If the sidetone (or monitor) were tied to the AF Gain control it would be excessively loud - potentially to the point of damaging hearing. Providing an independent, front panel adjustment of the sidetone/monitor is the appropriate approach to maximize user flexibility. 73, ... Joe, W4TV On 5/26/2010 8:37 PM, Toby Pennington wrote: I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2898 - Release Date: 05/26/10 18:26:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 band pass filter alignment
If we were in a period of higher sunspot activity, we would not have this problem. If there were good signals on the 17/15 meter bands, we could use those to adjust the K1-4 to the correct band. Unfortunately, we are in a time when solar activity does not produce a lot of signals on the 17/15 meter bands, so the use of a known frequency signal source is almost mandatory. Yes, there are 'workarounds', but those should be used wtth a degree of awareness for the consequences. 73, Don W3FPR Alexey Kats wrote: Don, You are absolutely right - the biggest trouble I had with my K1-4 was on 17m band. With 20m I used XG2, but for 17m I ended up tuning it after transmitter was fully built - I first tuned it roughly on low power transmit with dummy load and watt meter, then using noise generator on receive (with attenuator on), then again with watt meter on transmit. And as a result I had to re-tune 20m again. On Wed, May 26, 2010 at 6:04 PM, Don Wilhelm w3...@embarqmail.com wrote: Alexey, Using the noise source or dead band noise with the K1-4 is problematic for the 15/17 meter and 20 meter bands. The real world situation is that it is possible to tune the 15/17 meter Pre-Mixer bandpass trimmers to the region of 29 MHz rather than 23 MHz. The usual result is that 20 meters cannot be tuned properly (and the frequency that 15/17 meters is tuned to is incorrect). The way to avoid that situation is to use a known signal source when tuning 15/17 meters. The manual states that the initial position for the Trimmer capacitors is to be with the slots parallel with the long side of the board. The final adjustment ot the trimmers will be no further than 20 degrees away from that position. If the 'peak' occurs further away from that range, it is at the wrong point. Using a signal source of a known frequency will avoid this problem, but using a wideband noise source can certainly produce this false response. Note that this condition does not occur as readily with the 2 band board. 73, Don W3FPR Alexey Kats wrote: Greg, You can use XG2 kit from Elecraft as a signal source for K1 on 80m, 40m and 20m bands (it'll also give you a chance to adjust S-meter as well). 80m might be a little problematic if you selected 80kHz tuning range because it is close to the upper end of the band, but you should still be able to use it unless your VFO is misaligned. Or you could use N-gen kit too, but be careful with it - it's easy to adjust all filters on receive so it will look like you reached the peak, while in reality your IF will not align properly with center frequency of crystal filters. This is because it produces relatively strong noise signal. If that happens (the giveaway is that you can hear noise generator, but nothing from the antenna) - move all adjustments for the problematic band to their neutral positions and start over. But the easiest method is to use another QRP rig or a signal generator as a signal source. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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? Asked and answered, already. Thanks.
Hi- My K3? KXV3A RX Ant, IF Out Xvrtr Int question using LP-PAN has been answered. 73 de dave, K1OPQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
It would be nice to have the option of having the sidetone track the AF gain for those of us who are casual ops and then we would not have to continually be adjusting the side tone when going from headphones to speaker. That is a matter of the relative efficiency of your headphones and speaker. I find no need to adjust sidetone level when moving from headphones (Yamaha CM-500) to speakers (Sony B-1000 bookshelf speakers). 73, ... Joe, W4TV On 5/26/2010 9:24 PM, Toby Pennington wrote: Joe, thanks for the explanation. I am not a weak signal operator and just a rag chewer on cw. I QSO anyone I can hear, weak or strong but have never tried this approach. IF an op runs this way all the time then I can understand why he would want to set the sidetone to a dull roar. On the other hand, It would be nice to have the option of having the sidetone track the AF gain for those of us who are casual ops and then we would not have to continually be adjusting the side tone when going from headphones to speaker. Toby W4CAK - Original Message - From: Joe Subich, W4TV li...@subich.com To: Toby Pennington toby...@embarqmail.com; Elecraft Reflector elecraft@mailman.qth.net Sent: Wednesday, May 26, 2010 9:06 PM Subject: Re: [Elecraft] CW Sidetone Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Among other reasons, many top lowband and weak signal operators disable AGC, turn the AF gain to nearly full and control the volume using the RF gain. This procedure optimizes signal to noise ratio in high ambient noise conditions. If the sidetone (or monitor) were tied to the AF Gain control it would be excessively loud - potentially to the point of damaging hearing. Providing an independent, front panel adjustment of the sidetone/monitor is the appropriate approach to maximize user flexibility. 73, ... Joe, W4TV On 5/26/2010 8:37 PM, Toby Pennington wrote: I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2898 - Release Date: 05/26/10 18:26:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] order of construction for k3
I found that installing the 2nd receiver ... and especially inserting the antenna cable into the TMP jack ... was much easier if the KVV3 panel is removed. In addition, I have a short (permanent) extension cable added to my 2nd receiver's antenna jack that moves that input to the area atop the receiver housing. This facilitates making changes to the choices of where the received is fed from. 73! Ken Kopp - K0PP elecraftcov...@rfwave.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3? KXV3A RX Ant, IF Out Xvrtr Int question using LP-PAN, w/ Rev. B RF board
On Wed, May 26, 2010 at 6:08 PM, dbp tds.net d...@tds.net wrote: Hi- I read that K3 RF boards (Rev. H3 and later) sold about 09/01/09 had a different value resistor, somewhere on the RF board that allowed for a 10dB increase in signal to the I.F. output for use with LP-PAN and other panadapters. My RF board is a rev. B. Elecraft has a kit with the correct resistor, its order number is K3IOBUFFKT. Does anyone happen to have the value of the resistor and Elecrafts' directions as to where it goes? I don't want to wait for Left Coast time if I don't have to. Dave, See: http://www.elecraft.com/K3/mods/IF_Output_Buffer_Gain_Mod_Rev_A.pdf GL, ~Iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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? KXV3A RX Ant, IF Out Xvrtr Int question using LP-PAN, w/ Rev. B RF board
Hi Dave, Go to http://www.elecraft.com/ and clock on K3 Mods + App Notes. Scroll down a couple entries and click on IF Output Buffer Gain Modification to get the complete instructions. The resistor is a 13k by the way. The value is not critical; a 12k would work fine. It can either be a leaded or surface-mount type. Al N1AL On Wed, 2010-05-26 at 21:08 -0400, dbp tds.net wrote: Hi- I read that K3 RF boards (Rev. H3 and later) sold about 09/01/09 had a different value resistor, somewhere on the RF board that allowed for a 10dB increase in signal to the I.F. output for use with LP-PAN and other panadapters. My RF board is a rev. B. Elecraft has a kit with the correct resistor, its order number is K3IOBUFFKT. Does anyone happen to have the value of the resistor and Elecrafts' directions as to where it goes? I don't want to wait for Left Coast time if I don't have to. Thanks, Dave K1OPQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 band pass filter alignment
Thanks so much to you both. I wasn't sure if I could use the xg2 I built, but we solved that, so I plugged that in, and I noticed the difference in noise with very slight adjustment. I am now building the tx side. Greg Doughty On May 26, 2010, at 9:25 PM, Don Wilhelm w3...@embarqmail.com wrote: If we were in a period of higher sunspot activity, we would not have this problem. If there were good signals on the 17/15 meter bands, we could use those to adjust the K1-4 to the correct band. Unfortunately, we are in a time when solar activity does not produce a lot of signals on the 17/15 meter bands, so the use of a known frequency signal source is almost mandatory. Yes, there are 'workarounds', but those should be used wtth a degree of awareness for the consequences. 73, Don W3FPR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
Jeff The button on my MH2 is certainly stiff. But mine seems to be a bit more forgiving in the PTT department than you've described yours to be. I don't have to remain totally clamped down on it for the rig to stay in transmit mode. I've never opened it, but perhaps there's a means to adjust it inside? 73, Dave K6DCH Sent from my iPhone On May 26, 2010, at 4:08 PM, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 Build - #6950
Problem found. I did some swapnostics with a buddy's K2 and we traced the problem to the front panel. After going through all the resistance checks again my friend found the problem - U4 was backwards. It took me quite a while to fix it. I used solder wick to suck out the solder. I am sure anyone that has done that on a 20 pin IC can relate - quite tedious to pull the chip without lifting a pad or pulling a plated thru hole! Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Build-6950-tp5091343p5106740.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] CW Sidetone
I have my menu setting for both internal speaker and headphones, I have a small wire stereo plug with a right angle plugged in all the time the small stereo wire lead goes back under the radio and connects to a cable that comes out under the operating table where I remove and plug in my head phones this saves the ware and tear of the jack on the K3 and keeps the clutter in front of the radio down to nothing I do the same with the mic input folding the cable under the radio and out the back. I find the difference to my head phones a small annoyance as I need to adjust for loudness turn it down each time I put on the head phones. My headphones are the Snenheiser HD 280 pro compared to the internal speaker the headphones have much more gain. Part of this annoyance is the fact the room noise is less with the head phones on the moni needs to be up a lot for internal speaker usage for me.Tracking the side tone is not a thing I would want I need to get some external speakers going, I just don't have the room for them so I use the internal speaker. I still have the Alpha Delta speaker with the amp in it which was what I used for ten years or more on my Yaesu hf radios now the K3 sits in its place on top of my FT2000 DMU U-tuning kit radio which has not been used but 3 times to transmit since the born on date of June 13 09 of my K3 guess the solution is to sell the Yaesu to make room take a bath on cost and put the Alpha Delta speaker back in use that would fix the moni loudness issue. For the reasons posted running with the AGC off I would not want the function to change over either. Regards Art ka9zap __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
The MH2 mic PTT may be getting caught in the rubber surround. It is easy to undo the cover. Note that the PTT button only fits one-way, there is a cut away slide which fits onto the switch. For my own use the mic insert had a tad to much bass, it has been slightly modded here to suit. regards Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-Issue-tp5106621p5107093.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
