[Elecraft] K3S relay noise when using Rx ANT IN port

[raycollins]

My K3S is configured to use the RX ANT IN port for a separate Rx antenna.
However, on SSB transmissions I can hear an internal relay operating in
synchronism with peaks in transmit power.  I assume this is a relay in the
receiver input protection circuit?

Is operation of the relay in this manner normal? Apart from finding the
noise rather irritating I am concerned about the reliability of the relay
when it is called upon to operate so many times during a QSO.

The Tx and Rx antennas are about 10 metres apart and I am transmitting 100
Watts.

Thanks for your help,

Ray M1FJL



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