WWII Radio Altimeter, BC-788-C

 I wasn't sure whether to call it a "Radio" or "Radar" altimeter. In WW2 radar, could have transmission frequencies below 30MHz, but nowadays radar is confined to the microwave bands. This set probably uses something between 100MHz and 300MHz?

This set uses a 6J6 transmitter and a similar valve for receive, each in a tuned lines configuration

The set used a DC input which powered the valve heaters and drove a rotary converter for its HT and connected to a small circular display unit which gave the aircraft's height.

waiting for better pictures...

 

 Interior view showing typical high standard US construction

 

 Alas, aluminium corrodes easily... I should consider cleaning it up maybe?

 

 I wonder if it could be made to work??

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