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R.A.F. Henlow Signals Museum Exhibits for disposal |
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R.A.F. Henlow Signals Museum Exhibits for disposal |
| Full Listing |
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=0337.jpg "Power Unit for R1471 (Homemade)") |
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| Panel Type 327 | Panel Type 327 | Pip Squeak | Pip Squeak Contactor | Power Unit for R1471 (Homemade) |
Contactor Unit BC-608A.Pip Squeak This unit was used to control the operation of a transmitter that sent out a signal for 14 seconds in a minute on a specific frequency. The intention was to identify an aircraft as friendly to the ground controller. It pre-dated the IFF MkI system that was developed by 1939. |
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Pip Squeak (Photograph Number 0400) Click on the image to get the full size image. |
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