Cross- Net Communications

TM 11-5820-890-10-8

Cross- Net Communications

4.4d.

Unless there is but a single FH net operating, a totally unrealistic

ONE NET ONLY

battlefield situation, there is great advantage from the use of common

sync time.

The NCS radio automatically maintains sync time control

FH- M POSITION

(+/- 4 seconds) for that one net.

With a separate clock for each FH operating channel, sync time is

RT CLOCKS

automatically maintained for your operational channel and the other

four or five nets you have loaded into your radio.

Commanders, aircraft crews, and others who cross unit boundaries

COMMANDERS

frequently have the need to be able to enter any net quickly and with

minimum time and effort. If the net required is loaded in a channel of

one of the operating radios, only the channel switch needs to be

changed If the net required is not loaded in one of the operating

radios, and if all nets use common COMSEC, FH data, and sync time,

only the net ID needs to be changed for secure FH communications to

begin.

Monitoring, or "eavesdropping" as it is some times called, across all

MONITORING

unit nets is essential to command and control on the modern

battlefield. SINCGARS provides the capability to monitor or enter any

net in the division so long as common COMSEC key, FH data, Julian

Date, and GPS Zulu time are properly used.

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