开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: QMX+ new asssembled powers on but makes 'chuffing' sound on receive on CW?


 

Hi Charlie,
?
"i get a continuous series of dahs all the time. Even with key and cable disconnected."
I wonder if you have a short on the 3.5mm TRS mic/paddle socket.
Check that there are no solder blobs across all of the pins on the TRS socket and the mini board connecting to the main board.
Also, make sure that the underneath of mini socket board is not touching the casing when you slide the board in (assuming that you have it in a metal housing). There isn't a lot of space between the underneath of the mini TRS board and the casing. I had a slimier issue after completing my QMX+.
?
Mel. M0KMD

Join [email protected] to automatically receive all group messages.