Does this happen without the amp? Sent from my iPhone ...nr4c. bill
> On Jul 2, 2019, at 8:13 PM, Fred <[email protected]> wrote: > > 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] ______________________________________________________________ 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]
