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 4140-01-420-6263
NSN 6145-00-423-1563
NSN 5920-01-498-2705
NSN 6645-01-463-3441
NSN 6610-01-519-8953
NSN 5985-01-634-0635
NSN 6130-01-353-0965
NSN 2925-00-078-0525
NSN 5935-01-169-7178
NSN 5855-00-160-2286
NSN 4140-00-004-4544
NSN 5920-01-367-5791