Cobra Electronics 19 Ultra III Operation Ignition Noise Interference, Temporary Mobile Operation

Operation

Operating Your Mobile Radio

Operation

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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.

Temporary Mobile Operation

For Temporary Mobile Operation, you may want to purchase an additional cigarette lighter adapter from your Cobra dealer. This adapter and a magnetic mount antenna allow you to quickly “install” your transceiver for temporary use.

Operation

Operating Your Mobile Radio

Operation

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On-Off/Volume Knob Operating Procedure to Receive

Be sure that power cord, antenna and microphone are connected to the proper connectors before proceeding further. The CB/PA switch should be in the CB position.

To receive:

1.Turn the radio on by rotating the On-Off/Volumeknob clockwise.

Adjust Squelch/RF Gain Knob

2.Rotate the Squelch knob counterclockwise until incoming signal is heard.

3. Select the desired channel.

4. Set the On-Off/Volume knob and the Squelch knob to a comfortable listening level.

Temporary Mobile Operation

PA EXT

ANT

13.8V DC

NOTE

Red Wire is connected to positive side

of socket center tip. Black Wire is connected to negative side contacts.

Radio resets to CH 9 when connected to cigarette lighter plug.

When using the unit with cigarette adapter, turn off when not in use to avoid draining the battery.

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 To transmit:

1.Select the desired channel.

2.The receiver and transmitter are controlled by the Press-to-Talkswitch 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.

8 English

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