k. Wide Area Network (WAN) Communications. A WAN supports more than one functional
area or organization. Local area networks (LAN) are integrated in WAN.
(1) Area Common User -MSE.
(a) MSE is replacing the current ATACS. MSE supplies secure voice, data, and
facsimile service to corps and division. It can interface with ATACS and existing NATO networks,
providing communications to both mobile and static subscribers in a five-division corps area (37,500
(b) MSE provides the commander with mobile communications and is referred to as "the
cellular telephone on the battlefield." It is easily transportable on aircraft and is quickly set up and taken
down to support communications needs on a dynamic battlefield. Read the extract of FM 11-30 at
Appendix B which describes MSE, noting the system architecture and major assemblages. The
extracted Appendix A from FM 11-30 lists typical MSE site deployment and the extracted Appendix B
lists MSE symbology and equipment nomenclature. After reading these extracts of FM 11-30, return to
(2) Combat Net Radio (CNR). CNR provides a communications means for C2 within the
corps in the division maneuver brigades, CS units, and CSS units. CNR is used primarily for C2 at
brigade and below and in a secondary capacity to transmit data. CNR is designed around three separate
radio systems: IFR, Single Channel Ground and Airborne Radio System (SINCGARS), and single-
channel tactical satellite (TACSAT).
(a) IHFR supports secure voice systems requiring a long range capability and replaces
the older AN/PRC-47, AN/PRC-74, AN/GRC-165, and AN/GRC-106. IHFR is fielded in three
configurations: AN/GRC-193A (vehicular) HF radio (Figure 2-11). AN/GRC-213 (manpack/vehicular)
HF radio, and AN/PRC-104 (manpack radio). The extract of TC 24-24 at Appendix B describes the
characteristics of IHFR systems.
(b) SINCGARS, a new family of VHF-FM radio sets, is replacing the VRC-12 series
radios. SINCGARS provides secure voice and transmission data across a broad frequency spectrum
using a built-in frequency hopping feature. This feature reduces the threat of enemy direction finding.
SINCGARS can interface with MSE through the net radio interface device in selected SENS or LENS.
The extract of TC 24-24 at Appendix B describes the characteristics of the various SINCGARS radios
(c) Single-channel TACSAT is primarily a user-owned and operated system. TACSAT
terminals provide reliable, highly portable communications, and have a minimum setup and teardown
time. They allow forces to communicate over extended ranges without regard to terrain interference.
Special Forces and Ranger units use the AN/PSC-3 and AN/VSC-7 for minimum essential
communications. These devices are described in the extract of TC 24-24.