Yaesu FT-920 Operating Manual page 85

U-73 ( )
Function: Enable/Disable protection relay in line from
"RX A " jack
NTENNA
on oFF
Available Values: /
on
Default:
When the [RX A ] key is pressed, activating
NTENNA
the Receive-only antenna port, protection for the re-
ceiver circuits from high RF voltage is afforded by a
small relay which, in the default condition, opens the
RX Antenna line during transmission. If only very low
RF voltage is present in your installation during trans-
mission, this Menu Item may be turned OFF.
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FT-920 Operating Manual