Ray,
Your transmit signal is getting into your RX antenna with more energy
than is safe for the K3S. 10 meters is not much separation unless the
antennas are oriented so one is not in the null pattern of the other.
Using antennas that are of opposite polarization (such as a horizontal
dipole and a vertical) may be OK for a 10 meter separation, maybe not.
There are protective devices available that will disconnect the RX
antenna when the K3S is transmitting, and use of one of those may be the
quickest and easiest solution.
73,
Don W3FPR
On 2/1/2020 5:21 PM, raycollins wrote:
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.
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