20. AN/TTC-48(V) small extension node switch.
Status: To be determined; NSN: To be determined
General Information
The small extension node switch (SENS) consists of an S-250E shelter transported on an M-1037
(HMMWV). The SENS contains switching, packet switching, and COMSEC equipment which supports
the secure digital communications of a CP. The SENS is provided in two versions--(V)1 and (V)2.
The (V)1 provides 26 digital lines and 10 digital trunks. The (V) 2 provides 41 digital lines and 13
digital trunks. Both versions provide two DC closure commercial office interface and a secure digital
NRI KY-90. The SENS can interface with a LENS or NCS directly via CX-11230/G cable, via LOS or
via TACSAT terminal AN/TSC-85B or AN/TSC-93B. Power is provided by a PU-753/M, 10-kW,
trailer-mounted, diesel generator.
Major Components
1 shelter S-250(E) /G
1 VINSON COMSEC equipment KY-57
2 telephone switchboards SB-4303
1 secure digital net radio
1 DNVT TA-1035/U
interface unit KY-90
1 communication modem
1 inverter, avionics
1 trunk encryption device KG-194A
1 environmental control unit
1 packet switch AN/TYC-20
3 junction boxes J-1077/U ((V) 1)
2 cables CX-4566 (25 feet)(SEN V1)
5 junction boxes J-1077/U ((V) 2)
1 cable CX-4566 (250 feet)(SEN V1)
2 cables CX-4566 (25 feet)(SEN V2)
4 cables CX-4566 (250 feet)(SEN V2)
mounts and cables for:
1 very high frequency (VHF)
radio set AN/GRC-224
1 secure digital net radio
interface unit KY-90
1 frequency modulated (FM)
radio
Technical Characteristics
Power Requirements.............................................................. 115 V AC, 50 or 60 Hz, single
phase
1-29
SS 0029
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