[MRCA] RS-1 GRC-109 Signal Suck Out Solution

[B. Smith]

        Several years ago I got tired of using a separate antenna for 
receive on my GRC-109. A SPDT relay was installed that is keyed via a 
isolation diode and is powered by the filament line.  The antenna relay  
solved the "suck out" problem and provides fairly decent QSK. A readily 
available SPDT Philmore relay is used.  I've  loaded some photos and 
instructions.
Happy Thanksgiving to all.
http://k4che.com/GRC109Rel/GRC109rel.htm

Z