The schematic shows a 1 Meg resistor to ground and a gas discharge device, SA1, SA2, SA3 on each antenna port.  Also when the unit is not powered, it defaults to ANT 1 in the Bypass mode.

Any lightning protection for your station should be accomplished outside of the house BEFORE the feed lines enter the structure. Once inside, it's too late.

73

Bob, K4TAX


On 12/4/2018 12:13 PM, Clint Talmadge wrote:
Are the antenna ports on a KAT500 grounded when the unit is off?
And are the unused ports grounded when one is selected and in use?
I find no reference to this in the manual.

Clint - W5CPT -
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