Ignition Noise Interference; Operating Procedure To Receive; Operating Procedure To Transmit - Cobra 19 DX IV EU Owner's Manual

Operation
Operating Your Mobile Radio
Operation

Ignition Noise Interference

Use of a mobile receiver at low signal levels is normally limited by the presence
of electrical noise. Under most operating conditions, when signal level is adequate,
the background noise does not present a serious problem. Also, when extremely
low level signals are being received, the transceiver may be operated with vehicle engine
turned off. The unit requires very little current and therefore will not significantly discharge
the vehicle battery.
Even though this radio has an automatic noise limiter, in some installations
ignition interference may be high enough to make good communications
impossible. Consult your authorized Cobra dealer or a two-way radio technician
for help in locating and correcting the source of severe noise.
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Operating Your Mobile Radio
Operation
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On-Off/Volume Knob
Adjust Squelch/RF Gain Knob

Operating Procedure to Transmit

Be sure the antenna is properly connected to the radio before transmitting. Prolonged
transmitting without an antenna, or with a poorly matched
antenna, could cause damage to the transmitter.
Press-to-Talk Switch
Operation

Operating Procedure to Receive

Be sure that power cord, antenna and microphone
are connected to the proper connectors before proceeding
further. Program the radio to the frequency band allowed in
the country in which the radio is to
be used.
To receive:
1. Turn the radio on by rotating the
On-Off/Volume knob clockwise.
2. Rotate the Squelch/RF Gain knob
counterclockwise until incoming
signal is heard.
3. Select the desired channel.
4. Set the On-Off/Volume knob and the
Squelch/RF Gain knob to a comfortable
listening level.
To transmit:
1. Select the desired channel.
2. The receiver and transmitter are controlled by
the Press-to-Talk switch on the microphone.
Press the switch and the transmitter is activated;
release switch to receive. When transmitting
(on a clear channel), hold the microphone
two inches from the mouth and speak clearly
in a normal voice.
Nothing Comes Close to a Cobra
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