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 6150-00-353-7392
NSN 5835-00-681-0005
NSN 5975-01-537-6221
NSN 6320-01-519-8767
NSN 5915-01-190-7691
NSN 5910-01-212-9659
NSN 6135-01-492-5717
NSN 4140-01-217-0570
NSN 5895-01-141-9544
NSN 5910-01-446-7199
NSN 5910-01-044-3978
NSN 5999-00-041-3383