must use late net entry to access the net. In addition, SINCGARS can store a delta time difference
between its clock time and that of other networks, up to 59 minutes apart in the preset positions. By
using GMT as the time reference, all networks will be well within that time limitation.
f. Frequency manager responsibilities.
(1) Controlling and monitoring time for the commander is one of the frequency manager's
primary duties. A corps or division frequency manager establishes authorized frequency assignments
for his echelon and for subordinate units. A frequency manager is responsible for deconflicting
frequency interference within his unit. He is actively involved in the overall communications plan to
ensure frequency plans and allocations meet mission requirements.
(2) A frequency manager begins the planning process by compiling the frequency
requirements from the subordinate units. He combines subordinate unit requirements with those of his
echelon, and forwards the request to his next higher headquarters. The combine-and-forward process
continues upward to the unified command authority in the theater of operations. The J6 deconflicts
frequency use plans and allocates frequencies back down to the component service frequency manager.
(3) Frequency allocations are divided at corps and division echelons. The BSM office
assigns frequencies based on criteria similar to those used to develop the initial request. The most
important criteria are net priority, equipment in use, equipment separation, retransmission requirements,
and frequency use restrictions.
(4) The corps and division BSM offices work separately (but in close coordination) to
produce the entire corps SOI.
(a) Previously, the National Security Agency (NSA) or corps and division BSM offices
produced SOIs. The frequency manager compiled all the SOI information, applied the above criteria,
and sent the package to NSA for production. Once BECS was fielded, it allowed the frequency manager
to do the tasks at the home station and make changes to the end product easily and quickly. BECS
increased the BSM office's efficiency in producing SOIs, distributing FH variables, and resolving
interference problems.
(b) The corps BSM office produces and distributes the corps headquarters, corps units,
and division command-level SOI information. The corps frequency manager assigns restrictions to
frequencies for hopset development, determines the corps common hopsets, assigns hopsets to the corps
units, and allocates frequencies to the divisions for use in their hopsets. The corps SOI information is
transferred to the divisions for inclusion in their SOI data bases.
SS0133
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