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TM 11-5821-333-12
3-10. NCS JAMMING AND ANTI-JAMMING CONSIDERATIONS.
If you suspect that an attempt is being made to jam communications on your net, try to improve the performance
of your net by doing the following:
a. Have members change location while still retaining line-of-sight.
b. If in SC mode, have net members change frequency, or change to FH mode.
c. Direct members to use a different PRESET. If authorized, ERF new data to change frequencies in hop -
set.
d. Tell members to use COMSEC.
e. DO NOT acknowledge that your net is being jammed.
f. Report any jamming activities when you land.
NOTES
Starting on page A-4, Roadmaps and Functional Flow Charts are provided for use
as training aids and convenient reference sources.
You risk radio failure during a mission if you do not perform the PMCS (Chapter 6)
prior to every mission.
3-11. NCS NET TROUBLESHOOTING.
Maintaining the integrity of the net and ensuring uninterrupted communications is the primary responsibility of
an NCS. Occasionally, a radio may not function as expected. The NCS should emphasize the importance using
the operator troubleshooting checklist by the net members before reporting trouble with the radio. NCS opera-
tors may be able to continue good communications in the net by trying the following:
a.
b.
c.
d.
e.
f.
g.
h.
Check your radio(s) using the operator checklist.
Ensure NCS station has LOS (line-of-sight) with at least one net member.
Make sure all stations have the most recent FH data. Call missing stations using old preset, if appropri-
ate, for ERF update.
Check distance to other radios in net to ensure that they are within range. A retransmit arrangement
might be considered to regain contact.
Ensure that you transmit often enough to keep all member of the net in time synchronization.
Make sure that your radio is the only one in the net to be set to
Check alternate NCS stations
to ensure that they have returned to FH after answering a CUE call.
Keep interference with the net to a minimum by responding quickly to CUE calls from stations not in your
net,
Respond to enemy jamming quickly. Alert the net and help members work through jamming to continue
communications.
3-8
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