JAMMING AND ANTIJAMMING
JAMMING. Jamming is the intentional transmission of signals that interrupt your ability to receive needed signals.
Interference is the accidental transmission of signals that also interrupt your ability to receive needed signals If you are
being jammed. it might sound like strong static, misleading signals, or random noise: or the net may be quiet with no
signals heard. These signals depend upon the type of jamming signals and whether your net is operating in single channel
(SC) or frequency hopping (FH) mode The source of jamming could be power generators, radar sets, high power RF radio
sets, or intentional enemy jammers.
SINGLE CHANNEL OPERATION.
SYMPTOM
POSSIBILITIES
ACTION
SIG marker is lit
(1) You have a bad
(1) Try to free-up
and showing a sig-
handset if you dis-
the stuck mike by
nal higher than LO.
connect the hand-
pressing push-to-
You hear no traffic
set and the lighted
talk 2 or 3 times
or noise and you
signal goes away
Remove faulty
are not transmit-
(stuck or "hot"
handset and replace
ting.
mike)
with one that is good
(2) You are being
(2) Change your
jammed If you set
tactical location.
RT FCTN switch to
Try to mask your
SQ OFF and hear
RT/antenna by
strong static or
placing hills rocks
random noise You
buildings, etc, be-
can confirm this by
tween you and the
disconnecting the
enemy. Notify your
antenna (MP) or
supervisor and pre-
antenna cable (ve-
pare a MIJI feeder
hicular) The SIG
report.
marker will drop
and the noise will go
away or be reduced.
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