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 6610-01-291-4173
NSN 5915-00-378-5585
NSN 6610-00-278-7647
NSN 5975-00-308-2200
NSN 4140-00-830-4675
NSN 5925-01-647-9713
NSN 5920-01-651-9321
NSN 5975-01-424-0314
NSN 6145-01-493-4475
NSN 5925-01-495-1071
NSN 5905-01-081-9912
NSN 5999-01-620-1202