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Turn the Unit ON by rotating the
volume control clockwise. Select AM
by pressing .
AM icon appears.
Setting the AM Squelch
Rotary
Channel
Selector
SLCT
FM/AM
SCAN
MEM INST
FM SQ
AM
S/RF
VOL
The FM Band has Automatic Squelch Control. It
requires no adjustment. However, if you are in a very
high noise area it may break through. Press
ooooo to select the tight squelch mode. The SQT
icon appears
Setting the FM Squelch
CTCSS
FM/AM
SCAN
DUAL
OS/GS
MEM INST
INST SET
DUP
FM SQ
FM
S/RF
VOL
SQT
Strong Signals
Medium Signals
Weak Signals
Noise
Think of the squelch control as a
gate. If you turn Squelch fully
clockwise it raises the ‘Squelch
Gate’ so high that no signals get
through.
Strong Signals
Medium Signals
Weak Signals
Noise
Strong Signals
Medium Signals
Weak Signals
Noise
If you turn Squelch fully
counterclockwise it lowers the
‘Squelch Gate’ to the extent that
all signals get through - weak,
medium and strong signals and
noise.
To set the ‘Squelch Gate’ to the
desired level, turn the squelch knob
counterclockwise until you hear
noise. Then carefully turn the
Squelch knob clockwise until the
noise fades. Now only strong
signals get through.
FMSQ
UNIDEN Model UH-090 Dual Band CB Radio (FM & AM)
Operation
CTCSS
DUAL
OS/GS
INST SET
DUP
6
FM/AM
NOTE
You must select a channel
which is not in use before
setting the SQUELCH
control. (see p. 7)
SQ
VOL
SQ
VOL
NOTE
Note: Selecting tight squelch mode may
prevent the reception of weak signals.