Jim,
D19 is intended to sacrifice itself instead of the PA transistor from
events like high SWR or power supply surges.
That means your antenna switching is likely producing a voltage spike
when switching.
Possibilities that I can think of include switching an antenna which has
a bias T ne
Jim Ragsdale writes:
> I've been wondering if anyone else has experienced this. I have a K1
> with the KAT1 ATU and am using an A/B switch to swap antennas. Three
> times now when I swap antennas with the power on the K1, it shorts out
> diode D19 in the final. I can solve the problem by always p
I've been wondering if anyone else has experienced this. I have a K1
with the KAT1 ATU and am using an A/B switch to swap antennas. Three
times now when I swap antennas with the power on the K1, it shorts out
diode D19 in the final. I can solve the problem by always powering down
before the swa
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