I had an oddball problem here that does this. The HAL DXP38 TNC (when turned off!) will key the K3 PTT line when the K3 is turned on. Separate power supplies for each. Computer connected to each.
If the DXP38 TNC is on and the K3 turned on, all is well. I have never figured out why this happens but took an "engineering approach" to fix it -- a normally open relay in the PTT line of the TNC which is only activated when the TNC powered. Didn't have this problem with two other rigs. I'm not saying it is the K3's fault..... To find what's going on: 1) disconnect everything from the K3 2) plug one thing at a time back in until you find the culprit. 73 de Brian/K3KO Guy Olinger K2AV wrote: > Could this be related to concurrently keying the K3 with DTR on a > serial connection (or ???) if part of the turn-on routine included > bring up a PC with some keying/logging program in the PC's startup > list? > > 73, Guy. > > On Sun, Apr 25, 2010 at 7:22 AM, Hector Padron <ad4c2...@yahoo.com> wrote: >> Like you was told,there must be something wrong in your setup because I do >> have an Ameritron AL-80B conected all the time to my K3 and more than once I >> have forgot to turn it down to standby and when turned my K3 back on >> nothing wrong happend,just heard the amp relay click for a fraction of a >> second,no damage,no expensive repair. >> >> AD4C >> >> >> >> "For a refined ham it is compulsory to own a k3" >> >> --- On Sun, 4/25/10, Tom W8JI <w...@w8ji.com> wrote: >> >> >> From: Tom W8JI <w...@w8ji.com> >> Subject: Re: [Elecraft] Beware, Make Sure Your Amp Is In Standby If You Turn >> On the K3 >> To: "-.-. --.-N3TU -.-. --.-" <connectme...@hotmail.com>, >> elecraft@mailman.qth.net >> Date: Sunday, April 25, 2010, 11:15 AM >> >> >> <<Sometimes I'll walk way from my tube amp and leave it in >> standby mode and >> turn off my K3. Well, a few weeks ago I forgot to put it in >> standby and I >> came back to the radio from working on my antenna outside >> and the swr was >> changed which was set on the tuner. When I turned on my K3, >> I damaged the >> amp. I forgot that when you first turn on the K3 that it >> transmits a signal >> (the clicking sounds when it fires up) for about a second >> or so and >> damaged my amp because of a high swr. Never again I will >> leave the amp >> without putting it in standby. Very costly mistake. The amp >> was set at 1100 >> watts. To make a long story short, I had the tubes replaced >> along with >> other things in the amp and power supply. I could have >> bought that new P3 >> for the amount of money that I spent for my error. Now that >> new P3 will be >> on the back burner for a while. >> >> >> I do not believe the K3 actually transmits RF, although it >> does close the amplifier relay line connection RF never >> appears. Mine activates the amp briefly, but does not >> actually transmit RF. >> >> You must have had something else going on. What type of >> amplifier do you have? >> >> 73 Tom >> >> >> ______________________________________________________________ >> 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
