SEIMENS S.B 172 EMERGENCY TRANSMITTER

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ABOVE IS THE SEIMENS S.B 172 EMERGENCY TRANSMITTER.THIS TRANSMITTER OPERATED ON CW / ICW AND COULD DELIVER UP TO 200 WATTS TO THE AERIAL. IT USED TWO MULLARD TZ05/20 VALVES IN PARALLEL.IT COULD ONLY BE OPERATED ON 500 kHz.

 

 

 

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