[Elecraft] Effect of KPA1500 Antenna Selection

[Andy Durbin]

KAT500 leaves unselected antenna ports open circuit and defaults to port 1 when power is removed.  The relays are not latching.

I don't have details for the KPA1500 but the ATU board photos available here -  https://fccid.io/UTR-KPA1500  - have high enough resolution to trace the  output signal paths.

I have been told these photos are of a prototype and may not represent the production configuration.

73,
Andy, k3wyc