Operation Under Jamming or Interfering Conditions

TM 32-5895-206-10

To obtain the best signal possible, use one or more of the

procedures below in addition to normal procedures. Notice that

some procedures can be used only in certain modes of operation

or with a particular receiver.

(1) (All modes and models.) Detune the receiver's

TUNE control slightly to either side of the desired signal. This

may help to separate the desired signal from the unwanted

signal.

(2) (VHF Radio Receiver R-1518 only.) Set the

BANDWIDTH control to the setting which gives the best results.

Often a narrow (10 kHz) setting will help to separate signals.

(3) (All modes and models.) Try using different

settings of the FUNCTION switch. This may help to reject the

unwanted signal. Adjust the TUNE control slightly for the best

reception.

(4) (Radio intercept operation only.) Change antennas

or antenna position. The proper df antenna may be used to null

the unwanted signal while still keeping the desired signal. The

longwire antenna may be moved with a similar effect. Changing

from a vertical antenna to a horizontal antenna (or vice-versa)

may help separate signals.

(5) (Direction finding only.) Jamming or interfering

conditions make it difficult to find a null. The best accuracy may

be had by ignoring the null meter

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