Uniden BC250D English Owners Manual - Page 19

Basic Operation

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Basic Operation Turn the Scanner On Turn the VOLUME control clockwise out of the detent position. The scanner automatically starts scanning. Since there are no frequencies programmed in your scanner initially, you may not receive any signals. Once you set the squelch and program some frequencies, you will begin hearing conversations regularly. Note: If you turn the scanner on when the optional APCO card is not installed, APCO P25 CARD NOT INSTALLED appears on the display. To delete the message, select 2:DISABLE in the Menu mode (see page 77). Setting the Squelch To set the squelch, you must be in the hold mode, and you should not be receiving a signal on your scanner. 1. Press HOLD/MAN until you do not hear a signal. 2. Make sure that the VOLUME is set to a comfortable listening level. 3. Think of the Squelch Control as a gate. Turn the SQUELCH control fully counterclockwise. This raises the "Squelch Gate" so high that only very strong signals can get through. 4. Turn SQUELCH clockwise until you hear a hiss. This lowers the "Squelch Gate" so that everything gets through - noise, weak signals, medium signals and strong signals. 5. Turn SQUELCH back counter-clockwise just until the hiss stops. Now the "Squelch Gate" allows only clear signals through. STRONG SIGNALS MEDIUM SIGNALS WEAK SIGNALS NOISE STRONG SIGNALS MEDIUM SIGNALS WEAK SIGNALS NOISE STRONG SIGNALS MEDIUM SIGNALS WEAK SIGNALS NOISE 15

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15
Basic Operation
Turn the Scanner On
Turn the
VOLUME
control clockwise out of the detent
position. The scanner automatically starts scanning.
Since there are no frequencies programmed in your scanner
initially, you may not receive any signals. Once you set the
squelch and program some frequencies, you will begin
hearing conversations regularly.
Note
:
If you turn the scanner on when the optional APCO
card is not installed,
APCO P25 CARD NOT
INSTALLED
appears on the display. To delete the
message, select
2:DISABLE
in the Menu mode
(see page 77).
Setting the Squelch
To set the squelch, you must be in the hold mode, and you
should not be receiving a signal on your scanner.
1.
Press
HOLD/MAN
until
you do not hear a signal.
2.
Make sure that the
VOLUME
is set to a
comfortable listening level.
3.
Think of the Squelch
Control as a gate.
Turn the
SQUELCH
control fully counter-
clockwise. This raises the
"Squelch Gate" so high
that only very strong
signals can get through.
4.
Turn
SQUELCH
clockwise
until you hear a hiss. This
lowers the "Squelch Gate"
so that everything gets
through
–
noise, weak
signals, medium signals
and strong signals.
5.
Turn
SQUELCH
back
counter-clockwise just until
the hiss stops. Now the
"Squelch Gate" allows
only clear signals through.
STRONG SIGNALS
MEDIUM SIGNALS
WEAK SIGNALS
NOISE
STRONG SIGNALS
MEDIUM SIGNALS
WEAK SIGNALS
NOISE
STRONG SIGNALS
MEDIUM SIGNALS
WEAK SIGNALS
NOISE