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R.A.F. Henlow Signals Museum Exhibits

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Controller_Electric_Type_4=0246.jpg Controller_Indicator_97942=0467.jpg

Converter+Rotary=0232.jpg Converter+Rotary=0233.jpg
Controller
Electric Type 4		Controller
Indicator 97942		Controller
Monitor DCU-9A		Converter RotaryConverter Rotary

Emergency Transmitter
Type T-74A/CRT-3(SCR-578)

This unit, known as the 'Gibson Girl', was used in a rubber dinghy to transmit SOS messages on the international Distress Frequency of 500kc/s. Its aerial wire was hoisted aloft by kite or balloon.
It sent Modulated CW (Morse) transmissions, or a signalling lamp could be keyed either manually or automatically.

Power was supplied by a hand-cranked dual voltage (28V/330V) generator.

Controller<br>Monitor DCU-9A

Controller Monitor DCU-9A (Photograph Number 0468)

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