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 6130-00-233-7639
NSN 2925-01-491-3270
NSN 5895-00-137-8605
NSN 6685-00-578-5951
NSN 6645-01-160-7707
NSN 5835-01-351-8429
NSN 6620-01-038-7468
NSN 5895-01-245-9090
NSN 5930-01-032-3826
NSN 6130-01-238-9654
NSN 6240-01-575-4089
NSN 5975-00-915-7632