Military GRC-9

Michael Tyler WA8YWO

Richwood, West Virginia

Radio Set GRC-9 is a low power radio transmitter and receiver that may be used in either ground or vehicular installations. The radio set receives and transmits CW or AM in the 2 to 12 mc range covering the 80 meter and 40 meter Ham Bands. It replaced the BC-1306 set with greater frequency coverage and used the same accessories. It had a multitude of power supplies that could be used with it, everything from a hand-cranked generator to dynamotor power supplies, to a small gas engine generator, or even a battery pack for the receiver. The transmitter runs about 15 watts output on CW in high power or about 7 watts in low. On AM it runs 7 watts on high or 3 watts in low. It uses grid modulation on AM, and has full break-in CW. It will match a 15 whip for vehicle use or a long wire, or a resonant antenna. The transmitter uses a neon lamp in a red holder to show antenna matching. I have used this rig on cw using a home-made power supply and it performed very well. I have tried to use it on AM to talk to sideband stations but was not well received by the apparent anti AMers. But I did have a qso using my BC-611 at a distance of about a one half mile and the conversation was very clear and strong.

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