Bitx40 - was working, but now does not transmit audio.
The device was working well with many QSOs on 40m.
All of a sudden it does not transmitt any audio.
Receiving is excellent.
To test or trouble shoot I did the following.
I attached a rf power meter to the rf out and noted that on transmission the needel jumped up initially and immediatly dropped to nil.
I suspected the microphone so I replaced it and got the same result.
It seems as though the audio is not getting into the system to trigger the carrier signal and trigger the transmitter.
(I have very limited knoledge so may be off, but this is my assumption)
I also replaced the main board (not audrino and LCD) as I had a spare - same results
Does any one have any ideas on what to test or how to trouble shoot further.
Regards
Gary
ZS5GI
