Volume Setting; Rf Gain Adjustment; Squelch Level Adjustment - Icom ic-7700 Instruction Manual

■ Volume setting

[AF]
Audio output
decreases

■ RF gain adjustment

[RF]
Sensitivity
decreases

■ Squelch level adjustment

[SQL]
Noise squelch
(Recommended level; FM mode only)
Squelch is
open
Audio output
increases
Sensitivity
increases
[XFC]
S-meter
squelch
➥ Rotate [AF] control clockwise to increase, counter-
clockwise to decrease the audio output level.
➥ Rotate [RF] control clockwise to increase, counter-
clockwise to decrease the receiver sensitivity.
NOTE:
When [RF] control is adjusted CCW in FM mode,
audio output decreases then disappears. This is
normal, not a malfunction.
The squelch mutes noise output from the speaker
(closed squelch) when no signal is received.
➥ When no signal is received, rotate [SQL] control
fully counterclockwise first, then rotate [SQL] clock-
wise to the point at which the noise disappears.
• Hold down [XFC] to open the squelch temporarily.
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BASIC OPERATIONS
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