You are probably hearing the bias switching relay changing the bias.
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On Sunday, December 11, 2022, 11:39 AM, Steve London <n2icarrl@gmail.com> wrote:
Commander HF-2500..
Every time the T/R relay goes back to receive, I'm getting a pretty big RF
spike that I can hear in the receiver. This has nothing to do with the
transceiver hot switching or RF stored in the tank circuit. I can reproduce
it just by cycling the T/R relay in the amp with a separate cable, not
connected to the transceiver, and not transmitting.
Suggestions ?
73,
Steve, N2IC
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