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Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details.

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Old 4th Jul 2017, 7:07 pm   #1
Martin G7MRV
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Default 'Switch Type 78A 24V' ?

A friend has this device, I wonder if anyone can identify it?

It is marked 'Switch Type 78A 24V', with a War Dept property mark.

I'll try and add pictures, but they were sent on Twitter and im not very good with it!
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Old 4th Jul 2017, 7:18 pm   #2
G6Tanuki
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Default Re: 'Switch Type 78A 24V' ?

Seems it was part of Rebecca/Eureka homing system - see http://spitfirespares.co.uk/radio.html
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Old 4th Jul 2017, 7:51 pm   #3
Martin G7MRV
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Default Re: 'Switch Type 78A 24V' ?

Thats exactly it!

My friend is sending me 'mystery item' pics on twitter of things as he clears out his uncles estate. By this, and some other items so far found, there could be some very interesting stuff amongst it all!

Cheers
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Old 4th Jul 2017, 8:06 pm   #4
dseymo1
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Default Re: 'Switch Type 78A 24V' ?

Don't do that - it might be the emergency self-destruct control
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Old 4th Jul 2017, 9:09 pm   #5
M0FYA Andy
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Default Re: 'Switch Type 78A 24V' ?

To be pedantic it is part of Rebecca, which is an airborne transmitter/receiver which enables an aircraft to determine the distance to a portable Eureka transmitter/receiver beacon on the ground, and to home onto it.
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