[Elecraft] K3 PTT problem
After a while not using my K3, today I have connected the microphone and the PTT doesn´t work. Mic works perfectly with other equipment and previously also on the K3. I have tried to work with the VOX and the same microphone and the K3 goes to transmission without problems and the audio comes out well. I've been going through all the K3 settings but I don't see where the problem may be. Any point where to start reviewing? 73 DX de Pedro, EA4KD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 always 100 W
Thank you very much Keith and Don. Until today I haven´t had time to review the possible failures. I have checked and the D37 is failing so I am going to replace both D36 and D37, what kind of diodes should I buy to replace them? I have also checked the rest of possible and failures and everything seems ok. After about 100k QSO this is second fault, firts changed the pin in the back panel about the 12 V error problem. K3, great rig. Pedro, EA4KD K3 #188 -Mensaje original- De: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] En nombre de Keith Trinity WE6R Enviado el: martes, 11 de febrero de 2020 1:06 Para: elecraft@mailman.qth.net Asunto: Re: [Elecraft] K3 always 100 W It could be D36 & 37 on the RF board. Earlier ones (1st few thousand) had weak components. But any of them can fail and usually there is runaway power out. If that is not it, look for burned components under the KANT3 board around T4 or on the underside near D36 & 37 look for burnt traces. If it is older than about #5500, it could be front panel tin pin oxidation, replaced them with gold. Keith __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ea...@ea4kd.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 always 100 W
Don; TUN PWR it´s on 15 and haven´t ATU. Pedro, EA4KD -Mensaje original- De: Don Wilhelm [mailto:donw...@embarqmail.com] Enviado el: domingo, 09 de febrero de 2020 14:02 Para: Pedro, EA4KD; elecraft@mailman.qth.net Asunto: Re: [Elecraft] K3 always 100 W Pedro, If it is not present with a long keydown in CW, and only in TUNE, the wattmeter is NOT the problem. Check your K3 menu for the setting of TUN PWR. What does ATU TUNE do? 73, Don W3FPR On 2/9/2020 2:56 AM, Pedro, EA4KD wrote: > Thank you very much Don; > > I have been testing and when do a tune the power is always 100 w although I > have it set to 15 w in the TUN PWR menu., always 100 w. > > In normal operation, cw or ssb, I can choose the power between 0 and 100 w > without problem. > > I will start checking the wattmeter. > > Thank you very much for your help. > > 73 DX de Pedro, EA4KD > > -Mensaje original- > De: Don Wilhelm [mailto:donw...@embarqmail.com] > Enviado el: sábado, 08 de febrero de 2020 20:55 > Para: Pedro, EA4KD; elecraft@mailman.qth.net > Asunto: Re: [Elecraft] K3 always 100 W > > Pedro, > > If it were a K2, I could tell you that the diodes in the wattmeter have > been damaged and need to be replaced. Those symptoms are almost the same. > > The K3 controls power in a similar manner, and I would suggest you start > with the wattmeter - I believe it is on the KAT3 board in the K3. > > 73, > Don W3FPR > > On 2/8/2020 2:39 PM, Pedro, EA4KD wrote: >> >From yesterday my k3 always gives 100 w in any band although select any >> other power from 0 to 100, always 100 w in the external meter. >> >> Also the swr display shows "- -" and power 0 in any case. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 always 100 W
Thank you very much Don; I have been testing and when do a tune the power is always 100 w although I have it set to 15 w in the TUN PWR menu., always 100 w. In normal operation, cw or ssb, I can choose the power between 0 and 100 w without problem. I will start checking the wattmeter. Thank you very much for your help. 73 DX de Pedro, EA4KD -Mensaje original- De: Don Wilhelm [mailto:donw...@embarqmail.com] Enviado el: sábado, 08 de febrero de 2020 20:55 Para: Pedro, EA4KD; elecraft@mailman.qth.net Asunto: Re: [Elecraft] K3 always 100 W Pedro, If it were a K2, I could tell you that the diodes in the wattmeter have been damaged and need to be replaced. Those symptoms are almost the same. The K3 controls power in a similar manner, and I would suggest you start with the wattmeter - I believe it is on the KAT3 board in the K3. 73, Don W3FPR On 2/8/2020 2:39 PM, Pedro, EA4KD wrote: >>From yesterday my k3 always gives 100 w in any band although select any > other power from 0 to 100, always 100 w in the external meter. > > Also the swr display shows "- -" and power 0 in any case. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 always 100 W
>From yesterday my k3 always gives 100 w in any band although select any other power from 0 to 100, always 100 w in the external meter. Also the swr display shows "- -" and power 0 in any case. Does anyone know where I can look for the problem? 73 DX de Pedro, EA4KD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Band Data
Very grateful Clay Pedro, EA4KD -Mensaje original- De: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] En nombre de Clay Autery Enviado el: domingo, 12 de enero de 2020 9:57 Para: elecraft@mailman.qth.net Asunto: Re: [Elecraft] K3 Band Data Here you go: https://ftp.elecraft.com/K3/Mod%20Notes%20Alerts/K3ALCMod_Rev_B.pdf < K3 Negative ALC and Ext Band Data Pull-up Mods, Rev B: REMIOUPGD ^^ The above doc has the instructions for EXT ALC mod and Pullup resistor mod. https://ftp.elecraft.com/K3S/Manuals%20Downloads/KIO3BUPGD-FAQ%20rev%20A.pdf < Replaces REMIOUPGD with KIO3BUPKT FAQ https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740280%20KIO3B%20Installation%20Rev%20A3.pdf <---KIO3BUPKT INSTALL Hope this stuff is what you are looking for 73, __ Clay Autery, KY5G (318) 518-1389 On 01/12/20 02:01, Pedro, EA4KD wrote: > Many thanks Don; > > Only need the instructions to add the resistors, I'll keep looking because I > haven't found yet. > > Pedro, EA4KD > > -Mensaje original- > De: Don Wilhelm [mailto:donw...@embarqmail.com] > Enviado el: domingo, 12 de enero de 2020 1:24 > Para: Pedro, EA4KD; Elecraft@mailman.qth.net > Asunto: Re: [Elecraft] K3 Band Data > > Pedro and all, > > The first K3 had band data outputs that were driven by open drain FETs. > That means that the receiving unit had to provide the pullup voltage to > operate properly. > > Since almost no one in the amateur community understood the benefits of > using open drain or open collector devices to drive the attached device > (which would provide the pullup voltage), that was changed so the K3 > provided the pullup voltages early in the life of the K3. > > If your K3 does not provide voltage on the band data lines, then you can > add the resistors to +5 volts if you install the REMIOUPGD resistors to > the band data lines. This upgrade kit is no longer available from > Elecraft, but the instructions can be found in the archives. > If you are also wanting to upgrade your K3 with the USB interface, you > can install the KIO3BUKT3 which replaces the REMIOPGT kit and provides > pullup resistors on the band data lines. > > 73, > Don W3FPR > > On 1/11/2020 6:53 PM, Pedro, EA4KD wrote: >> I am the owner of an old K3 (Nov 2007 # 188) and now I need to use Band Data >> outputs. As they did not work I have been looking for the problem and found >> that a long time ago there was a board that sold Elecraft to solve the >> problem (REMIOUPGD) for K3 before December 2008, but that is no longer >> available. >> >> >> >> Someone has available a board of these or information to be able to make >> this modification and use the Band Data?. >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 k...@montac.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 ea...@ea4kd.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 Band Data
Many thanks Don; Only need the instructions to add the resistors, I'll keep looking because I haven't found yet. Pedro, EA4KD -Mensaje original- De: Don Wilhelm [mailto:donw...@embarqmail.com] Enviado el: domingo, 12 de enero de 2020 1:24 Para: Pedro, EA4KD; Elecraft@mailman.qth.net Asunto: Re: [Elecraft] K3 Band Data Pedro and all, The first K3 had band data outputs that were driven by open drain FETs. That means that the receiving unit had to provide the pullup voltage to operate properly. Since almost no one in the amateur community understood the benefits of using open drain or open collector devices to drive the attached device (which would provide the pullup voltage), that was changed so the K3 provided the pullup voltages early in the life of the K3. If your K3 does not provide voltage on the band data lines, then you can add the resistors to +5 volts if you install the REMIOUPGD resistors to the band data lines. This upgrade kit is no longer available from Elecraft, but the instructions can be found in the archives. If you are also wanting to upgrade your K3 with the USB interface, you can install the KIO3BUKT3 which replaces the REMIOPGT kit and provides pullup resistors on the band data lines. 73, Don W3FPR On 1/11/2020 6:53 PM, Pedro, EA4KD wrote: > I am the owner of an old K3 (Nov 2007 # 188) and now I need to use Band Data > outputs. As they did not work I have been looking for the problem and found > that a long time ago there was a board that sold Elecraft to solve the > problem (REMIOUPGD) for K3 before December 2008, but that is no longer > available. > > > > Someone has available a board of these or information to be able to make > this modification and use the Band Data?. > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Band Data
I am the owner of an old K3 (Nov 2007 # 188) and now I need to use Band Data outputs. As they did not work I have been looking for the problem and found that a long time ago there was a board that sold Elecraft to solve the problem (REMIOUPGD) for K3 before December 2008, but that is no longer available. Someone has available a board of these or information to be able to make this modification and use the Band Data?. Thank´s in advance Pedro, EA4KD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
