I know it may not seem like an RFI problem, but it still feels like an RFI problem from the given symptoms.
One of the problems that can happen is that the RF doesn’t make it out of the radio, but reflects internally, and causes things to get wedged.
I would check the entire output path from the final transistors through the output transformer and the low pass filters, including the BNC connector and whatever cables and adapters you use to connect to your dummy load, and even the dummy load itself.
Good luck! Intermittents are the worst!
73, Willie N1JBJ
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On Aug 27, 2023, at 1:53 AM, jlloydham <captlloyd@...> wrote:
It has happened both when transmitting into my antennas and on my test bench into a dummy load so I don't think it is an RF problem.
