KENWOOD R-1000 MUTING
PERMISSION GRANTED FOR RELAYING AS INDICATED ON KENWOOD BBS.
R-1000 Muting                          
The R-1000 has a mute circuit four use in combination with a transceiver or transmitter.
The R-1000 RF stage will mute by grounding pin 7 on the remote terminal. (See Fig 3-9) in the opertors manual.
This information was inadvertantly omitted from the Owners Manual, and will be included in manuals for serial number 0030502 and above.
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Note: I haven't tried or verified this, proceed at your own risk. WA2ISE