All-

I have two pieces of equipment that are undoubtedly rare, one might even be unique.

The unique one is an ARR-47, which was removed from a C-97 by me perhaps fifty years ago when I was a lad.

It is a transistorized (very early Ge transistors) BC band receiver, with four pushbutton presets. It resembles a very high-grade auto radio, with permeability tuning, and a preset mechanism similar to an auto radio.  Four digit odometer type digital readout.  It is very compact, Dzus rail mount, only 2 ½” High, and 5 ½” deep.  Powered by 28VDC, with line level audio out via a 7 contact Winchester type plug.  Antenna connection is a BNC.  The Aircraft it was removed from was a SAC command aircraft, which may have been assigned to Gen. LeMay, but I am not certain.  Manufacturer was Sparton.  Question- Does this little receiver ring any bells, especially to old SAC warriors out there?

The second radio is the ARC-48. Which seems to be a very early 4 channel UHF radio that was installed in H-1s and perhaps other early light helicopters.  It is very compact, output about 1.5W and has 3 crystal-controlled channels, plus a guard channel at 243.0, The frequency coverage is 235-290 MHz.   Receiver is a regen, and the same circuit serves as TX, this is repeated 4 times, with common audio circuitry.  Miniature and sub-miniature tubes, power is from an ARC-5 receiver type dynamotor. Completely self-contained in a 12” deep x 5” wide x 8” tall case.  Manufacturer was Telephonics Corp.  I have a preliminary factory manual, but I would like to know whether it was used for training aircraft or might have seen use in Korea.  Developed around 1951.

Any information would be very appreciated!

Scott Johnson, W7SVJ

5111 E. Sharon Dr.

Scottsdale, AZ 85254

(480) 550-2358

scottjohnson1@ cox.net