ANTI-JAMMING/INTERFERENCE PROCEDURES.

TM 32-5895-206-10

The tones are transmitted in the order of first increasing and then

decreasing pitch, repeated over and over. The audible effect is

like the sound of a Scottish bagpipe.

(4) Noise. Noise is random both in amplitude and

frequency. It produces a sound similar to that heard when a

receiver is not tuned to a station and the VOL control is turned to

maximum.

(5) Gulls. This signal consists of quick rise and slow

fall of a variable audio frequency. The sound is similar to the cry

of the sea gull.

(6) Tone. This signal consists of a single audio

frequency of unvarying tone. It produces a steady howl in the

headset. Another use of tone is to vary it slowly. This produces

a howling sound of varying pitch.

2-17 ANTI-JAMMING/INTERFERENCE PROCEDURES.

a. Locating Jamming Transmitters. If the radio receiving

set is being used to locate a jamming or interfering transmitter,

use normal df procedures and any applicable procedures below.

Select the receiver control settings which best fit the signal type.

b. Operation Under Jamming or Interfering Conditions

Report jamming or interfering conditions, and continue operation

under the best conditions possible.

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