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Original U.S. WWII USAAF Gibson Girl SCR-578 Survival Radio Transmitter

Item Description

Original Item: Only One Available. This is a very good condition complete WW2 example of the Gibson Girl Radio Set SCR-578. This radio was used on B-17 and B-24 bombers and got its name because their narrow waist reminded people of the young ladies drawn by illustrator Charles Dana Gibson.

The Gibson Girl radio set was a hand powered emergency transmitter ruggedly designed for use in a life raft or small boat. Use of the Gibson Girl enabled rescue crews to locate survivors of ship or aircraft emergencies. The SCR-578 and its accessories were bright yellow-orange in color and the unit would float if placed in the water.

The Gibson Girl Emergency Transmitter was included with abandon ship provisions in life rafts. It was also packaged with a parachute so it could be dropped to survivors in the water. The Gibson Girl is operated by holding it between the knees while cranking the internal generator by hand. It can be set to automatically transmit an SOS signal or manual keying can be used to send a message.

The Gibson Girl design was based on a captured German emergency transmitter called the Notsender NS2, easily recognizable with the same hourglass shape. The British designed an improved version, but lacked the manufacturing capacity. A contract was let to Bendix Aviation for an American version, the Radio Set SCR-578-A. Bendix began deliveries in May 1942. The updated AN/CRT-3 became available in 1945. The Gibson Girl transmitters were used by military and civilian aircraft and ships into the 1960s.

The Gibson Girl Emergency Transmitter was produced in two main versions:

Radio Set SCR-578 broadcast on a single frequency of 500 kc, for reaching locally operating ships and aircraft. There were two versions, SCR-578-A and SCR-578-B.

Radio Set AN/CRT-3 broadcast on 500 kc or 8280 kc frequencies. The 8280 kc signal reached base stations at longer range. Visually identical to SCR-578.

Some models of the AN/CRT-3 operated at 8364 kc instead of 8280 kc. All Gibson Girl frequencies are internationally reserved for distress signals.

Gibson Girl Emergency Transmitter Accessories

The Gibson Girl transmitter can be operated by untrained personnel, following instructions printed on the radio's case. To facilitate operations under all conditions, the full kit of Gibson Girl radio equipment includes:

- Radio Transmitter BC-778-A (SCR-578) or T-74/CRT-3 (for AN/CRT-3)
- Hand Crank GC-18-A to operate the internal generator
- Reel RL-48 inside a front-panel door holds 800 ft. of antenna wire W-148
- Kite M-277-A, folding metal frame box kite to raise the antenna in wind
- Balloon M-278-A, for use when wind is insufficient for the kite
- Generator M-315-A, produces hydrogen to inflate the balloon to 4 ft in diameter
- Signal Lamp M-308-A, to communicate locally with rescue crews
- Parachute M-390-A
- Bag BG-109-A (Cylinder bag containing Kite assembly, 2 balloons, 2 hydrogen generators, signal lamp, wire)
- Bag BG-110-A (Cube shape bag containing Gibson Girl radio and crank with parachute in pouch on top)

Note that not all these accessories are included with this set, please look at photos to see what is included.

The total weight of the radio and all accessories is 33 pounds. The suffix letters changed as manufacturing developed improvements. For example, the M-390-A parachute (untreated rayon) was superseded by the M-390-B (tropicalized nylon). Other changes included packing all components into a single cube shaped bag BG-155-A for the AN/CRT-3 model.

The balloon was inflated by connecting the hydrogen generator inflating tube to the balloon, then immersing the hydrogen generator in water. The chemical reaction that produced the hydrogen also produced a lot of heat, so caution was required.


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