GENERAL - TM-11-5820-890-10-80220

TM 11-5820-890-10-8

GENERAL

7.1.

This chapter addresses three items of equipment associated with

SCOPE

SINCGARS operations.

The PLGR, in addition to its primary function of determining position

PLGR

location, serves as the principal source of correct Julian Date and exact

GPS Zulu time for SINCGARS net sync time. Julian Date and GPS Zulu

time can be downloaded from the PLGR by direct connection to the RT,

or by manually loading PLGR time into an ANCD, with subsequent

loading of the RT from the ANCD. Additionally, the ANCD can be used

as the source of required PLGR keys.

FHMUX is a development item which when fielded will allow operation

FHMUX

of up to four SINCGARS vehicular radios from a single antenna.

Specific guidance regarding the FHMUX will be added to this manual

when the system has been approved for fielding and firm procedures

have been developed.

By connecting the STU to an ANCD, it IS possible to transfer COMSEC

STU

keys, FH data, and SOI information over commercial or military

telephone circuits for unlimited distances. This capability enhances

SINCGARS operations for widely dispersed units, and it could be

especially useful during mobilization of Reserve Component forces.

7-2