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This is NOT manufactured nore has any relation to Hallicrafters or Collins equipment... except for the fact that they also manufactured other Ham/Communcations/Radio equipment for the millitary as well... the Admiral Corporation however produced more Spy related Radios for the Military and CIA. Below is a breif history of the GRC-109 equipment along w/ it's specifications: (this information was barrowed from http:// /spyradio/grc109.html where you can also find more information about the GRC-109's) The GRC-109 is the Army adoption of the RS-1, and consists of receiver R-1004, transmitter T-784, and power supply PP-2685 or PP-2684. The RS-1 and GRC-109 are identical except for labeling, although all known T-784's have a connector for a Burst Coder (GRA-71) on the front panel. This difference is an "MWO" (Modification Work Order) on the T-784. Other than the burst-coder connector and the markings, the GRC-109 is virtually identical to the RS-1. The T-784 characteristics are described in NSN 5820-00-892-0880. Original cost: $532. The R-1004 characteristics are described in NSN 5820-00-892-0882. Original cost: $1122. The units are waterproofed and tested for 7.5 PSI. There is also a GRC-109A set, which is a later model and has a different case with hasp-type lid fasteners, instead of thumbscrews; and there is a carrying handle built into one side. It also has some cost-saving design changes: for example, the window for the tuning dial is a part of the front-panel casting, instead of being a separate screw-on piece. The "A" model is probably more rugged, due to the thicker case and heavier construction, but it is 'less attractive' than the earlier model. The CIA did not have an equivalent to the GRC-109A, and production of the RS-1 had probably stopped several years before. AN/GRC-109 Radio Station Specifications Power Supply PP-2684 and PP-2685 PP-2684: 10" X 8-1/2" X 5-1/2" PP-2685: 8-5/8" X 5-1/2" X 5-7/16" (Grc-109 spy radio power supply (hallicrafters collins was posted and is owned by: Zelma Fuller) |
zelma-fuller@chicagopartsnetwork.com (Zelma Fuller) for more information.
