Trip et al,
It has been discussed before. Search for “PTT noise” or PTT transient”. Cause and solutions both simple (ignore it) and complex (Multi-transistor multi-relay switching schemes to cut the power during the crossover) have been described. Some of the discussion far predates the new SMT Bitx40 from India.
I have it with all cleaned up and in a fully shielded enclosure.
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Trip,
I found that while I had my board sprawled all over my bench that the click on Xmit was real loud with all my cables crossing each other, when I got the wiring cleaned up and separated and the power output cable replaced by a piece of RG-174 coax it's hardly noticeable anymore.
Joel Caulkins?KB6QVI
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Just to the controls hooked up...for testing. Upon key up I get a loud "pop" in the speaker.
I searched the group and didn't see this issue.?
Ideas??
Trip - KT4WO
kt4wo67@...
