I don't operate phone much but when I tried to I heard a weak pulsing buzz corresponding to the USB port polling the radio. I also had trouble getting the mic gain and compression right. It seemed I had to turn both way down and yell in the mic because if I turned either up, I got a rushing noise in the audio. There was no RF "bite" and I was using a star-point ground system so I assumed I did not have any RF in the shack.
I asked Joe at Microham about it and he suggested the two mods on the Elecraft website dealing with bypassing a few RF chokes and modifying the microphone jack. These mods are for early K3s and the instructions tell how to check if you need them using a DVM. My K3 #101 was a candidate. Neither mod is particularly difficult and the only part required is a bit of wire. I am glad to say that after performing the surgery the pulsing buzz is gone and the mic gain and compression settings are working normally. Night and day difference. I offer this as advice to anyone who experiences issues with noise in the audio or difficulty adjusting the mic gain and compression. Buck k4ia K3 #101 ______________________________________________________________ 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
