On Tue, Feb 27, 2024 at 4:52?PM Larry Naumann <n0sa@...> wrote:
Today I blew out my audio chip. I knew better but just was not thinking. I was using a random wire antenna with one radial and I had the radio within two feet of the feed point. I was using a Mat10 auto tuner. All was well on 20 meters but when I went to tune up on 17 meters there was a squeal in the headphones then nothing. I was using a short adapter ?that I made to plug a set of earbuds into.? I have had the radio for over a year and have used it with many different antennas with no issues. This is the first time I have used this particular antenna.? Usually I used tuned antennas either short verticals or efhw antennas. It probably would have been okay if I had just moved the radio further from the antenna, I just had a senior moment and payed for it. Luckily, I ordered 3 spare audio chips, now I have two spares. The radio is repaired and ready for action. I really wish there was a fix for this issue, maybe some added caps but it is beyond my pay grade to figure it out. From now on I will be more careful and I will not be using that antenna again with my TX500. Larry n0sa
