4 chan telephone circuit; 2 spiral 4 transmission line use; 200 hz to 12 khz carrier freq range; 1000 hz ring circuit; 400 to 800 mi oper dist; alt oper pwr rqmt ac 115v, 50 to 60 hz, 1 ph, 230v, 50 to 60 hz 1 ph, dc 12v; components list doc a tech man tm11-341 pg 142; sig telephone terminal set type tc-21-a and tc-21-b; genl purpose use
Two or more carrier telephone terminals with operating accessories for two way communication. It may include necessary wiring facilities.
Classification: Parts for apparatus for transmission or reception of voice, images or other data, including apparatus for communication in a wired or wireless network
NSN 5920-01-642-4548
NSN 6645-00-256-4072
NSN 5915-01-457-3467
NSN 6610-01-555-8364
NSN 6240-01-258-5829
NSN 6105-01-344-4563
NSN 6135-00-297-8873
NSN 6620-00-278-7313
NSN 6150-00-130-8285
NSN 5990-01-380-7815
NSN 5905-01-168-8793
NSN 5998-00-919-3910