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Cobra 25 LTD - Core Operation Controls; Receiving Signals and S-Meter; Noise Filtering and Display Brightness; Adjusting RF Gain and Squelch

Cobra 25 LTD
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Operation
6
7
Operation
To Receive
Rotate the On/Off Volume knob clockwise.
While receiving the RX/TX LED will be
illuminated and the lower portion of the
meter will show the incoming signal strength.
S-Meter
The S-Meter swings proportionately to
the strength of the incoming signal when
receiving.
NB/OFF (Noise Blanker) Switch
When switched to NB the RF Noise
Blanker is activated, providing increased
noise filtration.
When switched to OFF all noise filtration will
be turned off.
NOTE: The RF noise blanker is very effective
in reducing repetitive noises such as ignition
interference.
Bright/Dim Switch
Switch to BRT or DIM to control the brightness
of the channel indicator and multi-function
meter for day or nighttime driving.
RF Gain Control
The RF Gain is used to optimize reception in
strong or weak signal areas.
Rotate the RF Gain knob counterclockwise
to reduce gain in strong signal areas. In weak
signal areas turn clockwise to increase gain.
Setting Squelch
Squelch (SQ) is used to cut off or eliminate
background noise in the absence of an
incoming signal (when you are not talking).
1. Full clockwise rotation closes the “gate”
allowing only very strong signals to enter.
2. Full counterclockwise rotation opens
the “gate” allowing all signals in.
3. To achieve the Desired Squelch Setting
(DSS), turn the Squelch control
counterclockwise until you hear noise.
Now turn the control clockwise just until
the noise stops. This is the DSS.
To Transmit
1. Select the desired channel.
CAUTION:
Be sure the antenna is properly connected
to the radio before transmitting. Prolonged transmitting
without an antenna or a poorly matched antenna could
cause damage to the transmitter.
Be sure to read the FCC Part 95 Rules and
Regulations before transmitting.
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