Warning; Customer Assistance; Rf Gain; Selecting A Channel - Cobra 19 DX IV EU Owner's Manual

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Operation
Operating Your Mobile Radio
Intro Operation Customer
Assistance
Operation
Squelch
Intro Operation Customer Warranty
Assistance
This control is used to cut off or elim i nate receiver background noise in the absence of an
Customer
Installation
Assistance
incoming signal. Adjust until the receiver noise disappears. This will require the incoming
signal to be slightly stronger than average receiver noise. Further clockwise rotation will Secondary Icons
increase the threshold level which a signal must overcome in order to be heard. Only
Customer
Installation
Assistance
strong signals will be heard at a maximum clockwise setting.
Secondary Icons
Squelch is the "control gate" for incoming signals.
Notice Caution
To squelch your radio:
Adjust Squelch/RF Gain Knob
1. Full clockwise rotation closes the gate,
allowing only very strong signals to enter.
Notice Caution

Warning

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 setting.
Gate Open
Gate Closed
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Strong Signals Strong Signals
Medium Signals Medium Signals
Weak Signals Weak Signals
Noise
Noise
Intro Operation Customer Warranty
Assistance

RF Gain

This control is used to adjust receiver sensitivity. Maximum sensitivity allows
weak signals to be received. However, very strong signals (such as from a nearby
Customer
Installation
Assistance
transmitter) can cause distortion at that setting. Adjust until the distortion disappears.
Secondary Icons
Reducing the receiver's RF Gain eliminates distortion from very strong incoming signals.
To set RF Gain:
Adjust Squelch/RF Gain Knob
1. Full counterclockwise rotation minimizes
gain for maximum distortion control.
Notice Caution Warning
2. To achieve the desired level of distortion control, turn
the RF Gain knob counterclockwise until
the distortion is eliminated.
3. After moving away from the strong signal,
turn the RF Gain knob fully clockwise to
receive all possible signals.
English
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19DXIVEU_MANL_ENG_vL.indd 6-7
Warranty
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Warning
Desired Squelch Setting (DSS)
Strong Signals
Medium Signals
Weak Signals
Noise
y n t r a a r
g n n i a r W
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Installation
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s n o I c n a i M
Operating Your Mobile Radio
Intro Operation
Operation
Channel Selector Knob
Installation
Notice
y n t r a a r W e r m o s t u C n i o a t e r p O o t r I n
e c n a i s t s s A
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e r m o s t u C
n i o a t a l l s t I n
Notice
e c n a i s t s s A
Channel 9/NOR/Channel 19 Button
s n o I c y a r d n o c e S
Intro Operation
g n n i a r W n i o u t a C e i c o t N
Installation
AM/FM Button
Secondary Icons
Notice
s n o I c n a i M

S/RF Power Meter

W e r m o s t u C n i o a t e r p O o t r I n
e c n a i s t s s A
e r m o s t u C
n i o a t a l l TX Indicator s t I n
e c n a i s t s s A
s n o I c y a r d n o c e S
n i o u t a C e i c o t N
Customer
Assistance
Operation
Customer Warranty
Assistance

Selecting a Channel

Rotate the Channel knob clockwise
Customer
Caution Warning
Assistance
until desired channel is displayed.
Caution Warning

Channel 9/NOR/Channel 19

Set CH 9 to obtain instant access
Customer to the emergency channel. Warranty
Assistance
Set NOR position to use the channel knob
to choose any of the 40 channels.
Set CH 19 to obtain instant access to
the information and calling channel.
Customer
Assistance
AM/FM Selection
This switch allows you to select the operating mode AM
or FM, in both Transmit and Receive, if the desired
operating mode is enabled by the programmed
frequency band.
Caution Warning
S/RF Power Meter
Shows relative transmitter RF output power
and input signal strength when receiving.
The Liquid Crystal Display (LCD) segments
increase with signal strength.
TX Indicator
The TX Indicator will light when transmitting.
"Busy" will appear when there is an incoming signal.
Nothing Comes Close to a Cobra
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9/24/15 12:14 PM