I am experiencing poor signal isolation between antenna ports of KAT500.

ANT1: Open
ANT2: Open
ANT3: Antenna connected

On selecting ANT1 or ANT2, I hear signal from ANT3 although signal level is 
lower than ANT3.

ANT1: Antenna connected
ANT2: Open
ANT3: Open

On selecting ANT2 or ANT3, I hear signal from ANT3 although signal level is 
lower than ANT1.

ANT1: Antenna connected
ANT2: Open
ANT3: Antenna connected

On selecting ANT3, I still hear signal from ANT1 (increased noise level from 
ANT1).

I have not experienced such poor inter-port isolation with my ICOM TRX with 4 
antenna ports.

Any idea for improving inter-port isolation?

73 de JH3SIF, Keith




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