(1) RAU AN/TRC-191 is an automatic interface between the mobile subscribers and
the MSE network. It allows access of the MSRT into the common user switched system. The
RAU can be collocated with a node center or remoted from a node center via radio link.
Functional characteristics of the RAU include omnidirectional radio coverage, automatic
establishment of fu duplex communications, secure digital voice orderwire, processing of
precedence levels in the direction of radio toward network, 15-kilometer (9.3-mile) range, and a
frequency range from 30 to 88 MHz. The RAU is contained in a single S-250 shelter transported
on a HMMWV. It has a capacity of eight simultaneous calls via the eight radios which are the
major elements of the assemblage. Power is provided by a PU-751 5-kw trailer-mounted diesel
generator set. The interior view of the RAU is Illustrated in Figure 1-11, page 1-16.
(2) MSRT AN/VRC-97 provides mobile subscribes a means of accessing the MSE
network via radio linkage. It consists of digital subscriber voice terminal (DSVT) TSEC/KY-68
and receiver/transmitter RT-1539. Functional characteristics of the MSRT include secure
automatic voice/data communications, discrete addressability, automatic reaffiliation during
movement, internal COMSEC, a frequency range of 30 to 88 MHz, and a 15-kilometer (9.3-
mile) range. Depending on mission requirements, the MSRT can either be installed on a vehicle
or used in a stand-alone configuration.
(3) Figure 1-12, page 1-17, illustrates the two MSRT configurations. Technical
characteristics of the RAU and MSRT are contained in Appendix D.
e. Support equipment consists of a maintenance facility, spares facility, node support
vehicle, a large extension node (LEN) cable vehicle and a node management facility (NMF).
(1) Maintenance Facility AN/TSM-182 is used to provide for battalion-level
maintenance of the MSE. The facility consists of two S-250 shelters mounted on HMMWVs
(2) Spares Facility AN/TSM-183 carries the MSE prescribed load list (PLL) and
authorized stockage list (ASL) spare parts. The facility consists of a S-250 shelter mounted on a
(3) The node support vehicle (NSV) is a HMMWV with a cargo trailer used to
transport four 15-meter LOS masts, one 30-meter mast, cables, and other ancillary equipment for
the node switch and LOS radio assemblages.
(4) The LEN cable vehicle is a HMMWV with a cargo trailer. It is used to house,
transport, and deploy cable and communications equipment.