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| This tester was built for the US Navy in 1918. It enabled the operator to monitor the output of the spark gap transmitter by using a crystal detector mounted on the back of the assenvly. (Source: Kreuzer collection) |
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| This tester was built for the US Navy in 1918. It enabled the operator to monitor the output of the spark gap transmitter by using a crystal detector mounted on the back of the assenvly. (Source: Kreuzer collection) |
Credits and References:
Oct 21/20