c. The current BECS terminal is designed around three primary components (BGU, printer, and
fill devices). The brigade and battalion BECS terminals have been used to produce paper copy SOI.
Concurrent with the fielding of the EN, these terminals are being used primarily as storage and transfer
devices for the FH variables.
(1) The AN/GYK-33 BGU is a small microcomputer with a self-contained screen and disk
drive. The NSA developed the operating system software that produces the SOI and FH variables. The
system may eventually be transferred to the Army command and control computer system for use in
(2) The dot matrix printer can produce a paper copy of the SOI. It does not produce any of
the variables for radio operation, which must be transferred to one of the fill devices available for the
CNR system in use.
(3) The two fill devices associated with CNR systems are the MX-10579 and the EN. The
MX-10579 holds the hopset, the net identifier, and the TSK variables. The EN holds the same variables,
along with a complete or partial SOI and a common time reference. The follow-on data transfer device
being developed by the NSA will also hold the COMSEC variables required for secure operations with
VINSON and the ICOM radio. The EN will be issued one per radio location for SINCGARS and IHFR
radios. Multiple radio locations (such as CPs) or configurations will have one EN.
d. The BECS is used to fill the various loading and transfer devices associated with CNR
systems. The system generates five time periods of SOI data per computer run. The operator turns out
as many time periods as required by requesting consecutive runs from the computer and storing the SOI
data on computer disks, or printing out the files. The operator specifies the starting number of the time
periods to generate the equivalent of a 30-day SOI using the consecutive runs. The BECS terminal
locally generates variables for FH operation.
a. The planning requirements for SINCGARS are different from those of previous generation
radios. The type of net needed is still determined by mission requirements and the unit standing
operating procedures (SOP). When planning communications support, the planner must know the
impact of mission, enemy, terrain, troops, and time available (METT-T). The planner should also
answer the following questions:
(1) What type of information is to be passed (data, voice, or both)?
(2) Is the network a common-user or a designated membership net?
(3) Is NRI required?
(4) Is retransmission needed to extend the range of the network?