GLOSSARY (cont) - TM-11-5820-890-10-80289

TM 11-5820-890-10-8

TERM

DEFINlTlON

FBCB2 Hardware

A term that refers to the various forms of computers used in

vehicular radio configurations for data communications during

army digitization experiments. FBCB2 computers range from

commercial off-the -shelve items to fully militarized computers.

The interface from FBCB2 computers to the SINCGARS SIP/ASIP

radio system is via an RS-232 port of the computer to the SlP/ASlP

VAA J6 connector.

FBCB2 Software

UNIX-based software developed especially for support of Task

Force XXI operations and used in FBCB2 hardware. FBCB2

software, when employed with the SIP/ASIP RT and SlP/ASIP VAA,

provides situational awareness reporting, internet operations, and

SINCGARS to EPLRS automatic interface. The host interface to the

SINCGARS SlP/ASlP radio system uses the commercial TCP/lP

family of communications protocols specified in the Army

Technical Architecture (ATA).

Frequency hopping (FH) data

Hopset, lockouts if used, TSK, net ID, and sync time required for FH

communications.

FH-Master

Mode position used by the NCS in which the NCS RT helps

maintain sync time in all net radios.

Holding memory

RT temporary memory used for loading, retrieving, and sending fill

data.

Hot start net opening

Method of opening a FH net in which net operators load all required

COMSEC, FH data, and sync time from their ANCD and merely call

the NCS to check into the net.

Internet

The terms used to indicate the capability of data messages to pass

automatically from one SINCGARS net to another and from a

SINCGARS to an EPLRS net to reach a single addressee or

broadcast sub-net. The SlP/ASIP VAA controls internet

operations through the software, addresses, and routing tables

stored in its memory. The internet capability is available only when

the SIP/ASIP radios are employed with the FBCB2 system.

lntranet replay

The capability available when packet data mode and the FBCB2

system are used which allows a single SlP/ASlP radio to relay a

data message to its addressee within the same frequency hopping

net. After the transmitting station tries unsuccessfully several times

to reach the addressee station, software in the SlP/ASlP VAA

causes the intranet relay station to retransmit the message. The

intranet feature is entirely automatic, requiring no action on the part

of the intranet relay station operator. This represents a future

capability and is currently not used.

Line of sight (LOS)

Straight line path between two radios that is required for best

communications.

All COMSEC keys, FH data, and sync time required to load all six

Loadset

RT channels for frequency hopping, cipher text mode of

communications.

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