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 5999-00-156-4424
NSN 4140-00-957-5285
NSN 5930-01-036-2044
NSN 5975-01-603-9466
NSN 6620-00-959-6614
NSN 5998-01-158-6067
NSN 5935-01-376-5551
NSN 4140-01-256-0910
NSN 5998-01-522-1766
NSN 7035-00-108-4421
NSN 5985-00-203-1200
NSN 6645-00-819-5045