I’m going to try and answer all the questions that have shown up in this thread. I really appreciate all the ideas and things to check. I do have a day job (7 years to go) so I only have time to play with this at night and try and debug.
I drive my KPA 500 with somewhere between 20 and 25 watts from the K3 depending on the band I do not get any faults on the KPA 500 or KAT 500. The fault log on the KPA 500 was clean I will test with WSJTx in the Tune mode and report back. I will check the sound card settings to make sure they are correct My computer is home built, i5-4590 CPU @ 3.3 GHz, 16 GB Memory, SSD Drive, decent graphics card Andy, K3WYC posted - I have not looked at the video but this sounds very similar to a problem I have seen. In my case HDSDR sound output had spontaneously changed to TS-590 TX CODEC creating a feedback loop through the PC. Break the loop and all is normal. – Question, how do you break the loop? All connections are good. When I built the K-Line, I made all new Co-ax cables with Amphenol connectors. All Elecraft cables are less than 2 years old. I need to add a ground from my MFJ Anderson Power Poll connection strip. Everything else is grounded to a ground bar, to a 10 foot copper rod outside the house, connected to another 10 foot copper rod at my tower and so on. I have not tried to see if this happens at 200 watts. I need to pay attention to see if it happens just on certain bands, or only on my Mosley or my wire dipole. It never happens if I am not using the KPA 500. Jack, W6FB if I let this go and check things as it is happening, do you think I could damage my equipment? That is one thing that worries me so when it happens, I kill the transmit ASAP I want to thank everyone in the Elecraft community for all the replies!! Thanks a lot!! Please let me know if anyone has any other questions. Fred, KD8ZYD -- Thanks, Fred ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
