Re: [Elecraft] K3 - Erratic receive
Hi Pete, The gold pins did not appear as part of production until somewhere around serial #4100. I had K3 Serial #3505 and had to have the front panel pins upgraded to the gold standard. 73, Mark, WB9CIF -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Pete Smith N4ZR Sent: Wednesday, November 29, 2023 20:35 To: Elecraft List Subject: Re: [Elecraft] K3 - Erratic receive Hi Bill - I'm pretty sure my radio is late enough so that it has the upgraded pins that were introduced to deal with that problem, but thanks for responding. 73, Pete N4ZR On 11/29/2023 3:28 PM, Bill Johnson wrote: > Pete, have the front panel pins corroded? There is an upgrade > available. > > Bill > K9YEQ > -- > -- > *From:* elecraft-boun...@mailman.qth.net > on behalf of Pete Smith N4ZR > > *Sent:* Wednesday, November 29, 2023 1:11:14 PM > *To:* Elecraft List > *Subject:* [Elecraft] K3 - Erratic receive My 2400-serial number K3 > has begun to have a sporadic receive problem, which has gotten much > worse recently. It's really weird. > > What happens is this - the receiver sporadically loses most of its > audio output level, until I move the AF pot a couple of degrees either > way, at which point it immediately restores the audio. Often, but not > always, this occurs right after a transmission (on CW), so I was > initially suspecting a failing relay, but the way it responds to a > minute change in the AF level setting makes me think something subtler. Any > ideas? > > -- > 73, Pete N4ZR > __ > Elecraft mailing list > Home: > http://mailma/ > n.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=05%7C01%7C%7C7d4b751b2a > 7a4453758208dbf11ad1d3%7C84df9e7fe9f640afb435%7C1%7C0%7C63 > 8368869713052828%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV > 2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=06%2F0jb76 > gQdp8ShBMY2RzzVY23LbY8owBg9orLhMwcw%3D&reserved=0 > Help: > http://mailma/ > n.qth.net%2Fmmfaq.htm&data=05%7C01%7C%7C7d4b751b2a7a4453758208dbf11ad1 > d3%7C84df9e7fe9f640afb435%7C1%7C0%7C638368869713060569%7CU > nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1ha > WwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=k917%2FSaA79NUonMRDwvN9NIpMNYj > HlmM7jNBaM8kjXA%3D&reserved=0 > Post: mailto:Elecraft@mailman.qth.net > <mailto:Elecraft@mailman.qth.net> > > This list hosted by: > http://www.qs/ > l.net%2F&data=05%7C01%7C%7C7d4b751b2a7a4453758208dbf11ad1d3%7C84df9e7f > e9f640afb435%7C1%7C0%7C638368869713065722%7CUnknown%7CTWFp > bGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn > 0%3D%7C3000%7C%7C%7C&sdata=yG3rHZMB6ZN4gnLmGMwovmvVvzrHO5jalB%2BhVL9p4 > r0%3D&reserved=0 Please help support this email list: > http://www.qs/ > l.net%2Fdonate.html&data=05%7C01%7C%7C7d4b751b2a7a4453758208dbf11ad1d3 > %7C84df9e7fe9f640afb435%7C1%7C0%7C638368869713069382%7CUnk > nown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWw > iLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5BeH79qgDqq3Jp%2F4Y73hBYG0dDkM7p > qXwk9tACHesUY%3D&reserved=0 > Message delivered to k9...@live.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmus...@outlook.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - Erratic receive
+1 for what Brian, K0DTJ suggested! The front panel buttons use a similar voltage divider with a multiplexed A/D converter to determine which button has been depressed. 73, Mike, K8CN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - Erratic receive
According to the schematics, those two double pots on the front panel are merely voltage dividers. They provide 0 to 5v signals to the front panel MCU which controls the function, eg: AF_GAIN. It’s possible the pot has developed a dropout right at the point where you usually set the AF level. Maybe turning the pot stop to stop a half dozen times will improve it?? Worth a try. 73, Brian, K0DTJ > On Nov 29, 2023, at 12:12, Pete Smith N4ZR wrote: > > My 2400-serial number K3 has begun to have a sporadic receive problem, which > has gotten much worse recently. It's really weird. > > What happens is this - the receiver sporadically loses most of its audio > output level, until I move the AF pot a couple of degrees either way, at > which point it immediately restores the audio. Often, but not always, this > occurs right after a transmission (on CW), so I was initially suspecting a > failing relay, but the way it responds to a minute change in the AF level > setting makes me think something subtler. Any ideas? > > -- > 73, Pete N4ZR > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to huntin...@coastside.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - Erratic receive
You're most welcome! Bill K9YEQ From: elecraft-boun...@mailman.qth.net on behalf of Pete Smith N4ZR Sent: Wednesday, November 29, 2023 1:34:40 PM To: Elecraft List Subject: Re: [Elecraft] K3 - Erratic receive Hi Bill - I'm pretty sure my radio is late enough so that it has the upgraded pins that were introduced to deal with that problem, but thanks for responding. 73, Pete N4ZR On 11/29/2023 3:28 PM, Bill Johnson wrote: > Pete, have the front panel pins corroded? There is an upgrade > available. > > Bill > K9YEQ > > *From:* elecraft-boun...@mailman.qth.net > on behalf of Pete Smith N4ZR > > *Sent:* Wednesday, November 29, 2023 1:11:14 PM > *To:* Elecraft List > *Subject:* [Elecraft] K3 - Erratic receive > My 2400-serial number K3 has begun to have a sporadic receive problem, > which has gotten much worse recently. It's really weird. > > What happens is this - the receiver sporadically loses most of its audio > output level, until I move the AF pot a couple of degrees either way, at > which point it immediately restores the audio. Often, but not always, > this occurs right after a transmission (on CW), so I was initially > suspecting a failing relay, but the way it responds to a minute change > in the AF level setting makes me think something subtler. Any ideas? > > -- > 73, Pete N4ZR > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9...@live.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9...@live.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - Erratic receive
Hi Bill - I'm pretty sure my radio is late enough so that it has the upgraded pins that were introduced to deal with that problem, but thanks for responding. 73, Pete N4ZR On 11/29/2023 3:28 PM, Bill Johnson wrote: Pete, have the front panel pins corroded? There is an upgrade available. Bill K9YEQ *From:* elecraft-boun...@mailman.qth.net on behalf of Pete Smith N4ZR *Sent:* Wednesday, November 29, 2023 1:11:14 PM *To:* Elecraft List *Subject:* [Elecraft] K3 - Erratic receive My 2400-serial number K3 has begun to have a sporadic receive problem, which has gotten much worse recently. It's really weird. What happens is this - the receiver sporadically loses most of its audio output level, until I move the AF pot a couple of degrees either way, at which point it immediately restores the audio. Often, but not always, this occurs right after a transmission (on CW), so I was initially suspecting a failing relay, but the way it responds to a minute change in the AF level setting makes me think something subtler. Any ideas? -- 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9...@live.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - Erratic receive
Pete, have the front panel pins corroded? There is an upgrade available. Bill K9YEQ From: elecraft-boun...@mailman.qth.net on behalf of Pete Smith N4ZR Sent: Wednesday, November 29, 2023 1:11:14 PM To: Elecraft List Subject: [Elecraft] K3 - Erratic receive My 2400-serial number K3 has begun to have a sporadic receive problem, which has gotten much worse recently. It's really weird. What happens is this - the receiver sporadically loses most of its audio output level, until I move the AF pot a couple of degrees either way, at which point it immediately restores the audio. Often, but not always, this occurs right after a transmission (on CW), so I was initially suspecting a failing relay, but the way it responds to a minute change in the AF level setting makes me think something subtler. Any ideas? -- 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9...@live.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 - Erratic receive
My 2400-serial number K3 has begun to have a sporadic receive problem, which has gotten much worse recently. It's really weird. What happens is this - the receiver sporadically loses most of its audio output level, until I move the AF pot a couple of degrees either way, at which point it immediately restores the audio. Often, but not always, this occurs right after a transmission (on CW), so I was initially suspecting a failing relay, but the way it responds to a minute change in the AF level setting makes me think something subtler. Any ideas? -- 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 erratic Receive volume
Good morning, I deleted your response to my question earlier this month. So here I go again... I had send an email earlier this month explaining my audio problem on my K3 #5278. Here's a copy of my message: Yesterday, my K3 suddenly decided to have erratic receive audio. If I have the audio at the 9 o'clock position and start to turn it counter-clockwise to lessen the audio, the audio goes to half volume. Sometimes I turn the AF gain completely counter-clockwise and I still have audio. I then have to increase and then decrease the audio to make it work correctly. I also brought up HRD and I can watch it on the software do the same thing. It happens ONLY when I am trying to reduce the audio. I received an email back to try and do a parameter initialization. I did that according to the manual and everything reloaded correctly. However, my problem still exists. Any thoughts on the problem? Also, what happens to the K3 radios that are donated to the FT5 dxpedition? Are they put up for sale by Elecraft? Just curious, they are probably nicely furnished. Thanks again for a great product and great support! Larry, KN8N __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
