AN~TTC-46

The large extension node switch (LENS)AN/TTC-46, part of the LEN, is configured in two S-250( )/G shelters:

• ON-305/TTC-46 switching shelter

• OL-412/TTC-46 operations shelter.

Each shelter is transported to an M-1037 high mobility multipurpose wheeled vehicle (HMMWV). The LENS is configured basically the same as the NC switch (see NS (also called NCS)with the basic difference in termination configuration for trunks and loops. The switching shelter provides the external interface, circuit switching, and associated functions. The operations shelter provides the central processing and operator interface functions. Power to both assemblages is provided by a PU-753/M, 10-kW, trailer-mounted, diesel generator towed by the operations shelter's prime mover.

Major Components ON-305

• 1 Shelter S-250E/G

• 3 STED KG-194A

• 8 Loop key generator KG-112

• 1 Automatic key distribution control KGX-93

• 1 Transition unit HGF-93

• 2 Super high frequency (SHF) control unit

• 2 Signal cable CX-4566

• 2 Packet switch AN/TYC-20

OL-412

• 1 Shelter S-250/G

• 1 Switch subsystem AN/TTC-46:

   1 LCSP (Part of AN/TTC-46)
   1 Switching processor subsystem (Part of AN/TTC-46)
   1 Plasma display unit (Part of AN/TTC-46)
   TDSGM

• 1 Net control device KYX-15

• Communications modem

• 1 VINSON COMSEC KY-57

• 1 Secure device NRI KY-90

• Environmental control unit

• 8 Junction box J-1077/U

• 1 Intercommunications station LS-147

• 1 Workstation (UXC-86)

• 1 DNVT TA-1035/U

• 6 Intershelter cables

• 1 Power cables CX-7453 and CX-7705**