[Elecraft] KAT500 Antenna Grounding

[David Ahrendts]

I’m considering stacking the Cushcraft A503S 6M yagi with my MA5B mini-beam rather closely — like five-feet vertical separation (Rohn five-foot tripod on the roof in a tight lot). Cushcraft recommends using an antenna switch to ground the unused antenna since the two would react with each other at 17M. Both would be connected to the KAT500. So here’s the question: are the un-selected antennas out of the three on the KAT500 grounded  through the KAT500 or do they remain just unattached but active? Do I need to mount an external antenna switch to ground the unused antenna, which is not desirable because of the KAT500’s ability to memorize frequencies and tuner corrections per antenna?

David A., KC0XT, Los Angeles    



David Ahrendts   davidahrendts at me.com