[Milsurplus] Info Needed

[Richard Brunner]

Bob wrote:
> Does anyone in the group have info on the TCM-1 and TCM-2 transmitter.

Yes!  Per Ships 275:
TCM:  2000-18,100 kc.  125 Watts A1, 30 Watts A2, A3.  Master oscillator, 
two intermediate stages, and final amplifier.  The final two stages are 
suppressor modulated for A2 and A3.  Power supply is 115 volts -15% + 10%, 
single phase, 50-62 cycles, 1200 Watts input key-down.  .  Power supply is 
1350 volts, 550 volts, and 58 volts for the keying circuit.  Keying speed up 
to 40 words per minute.  There is no distinction between TCM-1 and TCM-2. 
Probably they were different purchase orders

HF transmitter 36¾" high, 20½" wide, 18¾" deep, 169 lb.
Rectifier  36¾" high, 20½" wide, 14¾" deep, 229 lb.

FYI, the TCN is a combination of mf and hf transmitters with a power 
transfer switch, and TCU is an mf transmitter only, covering 300-2000 kc.

This is a very handsome transmitter.

Richard Brunner, AA1P