Ok.. My K3 has done something similar recently. When you suspect that the RX has gone dead, try holding the Tune button and force the radio to transmit a CW carrier. I suspect you'll find that you will get no output power aswell... In this case the problem is with the local oscillator and you won't see any error codes on the display either.
In my case I'd run into trouble with low out of from the KREF3 reference oscillator which was fixed with a resistor change as per these instructions ( http://www.elecraft.com/manual/E740278%20KREF3%20Output%20Level%20Modification.pdf). From memory the green LED on the top of the KSYN3A I'd installed would not light when it decided it didn't like the look of the reference oscillator, hence no LO would be generated and the symptoms were similar to the ones you described. It was intermittent and could be solved by power cycling the radio a few times, I could have sworn the odd "calibrated bump" would restore operation as well but I'm not so sure. Otherwise I'd be cleaning all of the TMP connectors with something like deoxit and making sure all of the LO and Reference oscillator connections are right. I certainly hope that you find the gremlin in your radio. 73 Matthew VK5ZM On 3 April 2017 at 18:11, LA7NO <p...@ieee.org> wrote: > Hello group, > > I have several times experienced that the K3 receiver goes 100% dead. Same > as if no antenna was connected. > A smart bump on the K3 brings it back to normal. > > I suspect a relay. The question is which one? > Suggestion anyone? > > 73, > > Per-Tore / LA7NO > > > > > -- > View this message in context: http://elecraft.365791.n2. > nabble.com/K3-loss-of-rx-signal-tp7628912.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 > Message delivered to vk...@bistre.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
