TBK Serial # 206

Accepted by Navy August 23,1938

Placed in Service July 15,1941

Weight 695 lbs

Power............ 500 watts on A1 350 Watts on AM

Tubes..3 860 1 861 tubes

B+ 3000 volts from Motor-Generator

Cathode Keying

Warm-up Time 1 1/2 hours

Oscillator Colpitts

The TBM and TDK Transmitters have different Motor-Generators and Modulators, otherwise they are identical