Cobra Electronics 19 DX II manual Rear Panel, Operating Procedure to Receive

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4. Adjust the volume of the PA speaker using the Volume control on the front panel.
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Set the CB/PA switch to the PA position.
Connect a PA speaker to the PA jack provided on the rear panel.
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3. Depress the push-to-talk switch on the microphone and speak in a normal voice.
Listen to the background noise from the speaker. Turn the SQUELCH CONTROL slowly clockwise until the noise JUST disappears (no signal should be present). Leave the control at this setting. The squelch is now properly adjusted. The receiver will remain quiet until a signal is actually received. Do not advance the control too far, or some of the weaker signals will not be heard.
Operating Procedure to Transmit 1. Select the desired channel.
2. Press-to-Talk Switch. 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 in a clearly normal voice.
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.
Operating Procedure for Public Address
Turn the radio ON by rotating the VOLUME CONTROL clockwise.
Rotate SQUELCH CONTROL counterclockwise until incoming signal is heard.
Turn the CHANNEL SELECTOR KNOB to select the desired operating channel.
Set the VOLUME CONTROL to a comfortable listening level.

Operation (Cont.)

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B. Rear Panel

1. ANTENNA CONNECTOR: This SO-239 connector permits connection of the transmission line cable male connector to the transceiver.

2. PUBLIC ADDRESS: An external 8-ohm 4.0 watt PA speaker may be connected to the PA Speaker Jack when this unit is used as a public address system. The speaker should be directed away from the microphone to prevent acoustic feed-back. Physical separation or isolation of the microphone and speaker must be employed when operating the PA at high output levels.

3. EXTERNAL SPEAKER: The External Speaker Jack is used for remote receiver monitoring. The external speaker should have

8-ohm impedance and be rated to handle at least 4.0 watts. When the external speaker is plugged in, the internal speaker is automatically disconnected.

4. POWER: These wires supply power to the CB radio. See page 5 for installation.

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Operation (Cont.)

Operating Procedure to Receive

1. Be sure that the power, antenna and microphone are properly connected before proceeding further. The CB/PA switch should be in the CB mode. The Channel 9/NOR Switch should be in the NOR mode.

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Contents Citizens Band WAY Mobile Radio If You Think You Need Service Channel Channel Frequency MHz SpecificationsIntroduction Frequency RangeLocation InstallationMounting Connection Base Station Operation Operation from 120VAC, House Current InstallationContCB Antenna Ignition Noise InterferenceFront Panel Controls and IndicatorsOther Operation Features OperationRear Panel Operating Procedure to ReceiveCode Meaning Maintenance and AdjustmentAdjustment Warning AppendixPermitted Example Message Few Rules That Should Be ObeyedHow Your CB Can Serve You Use Channel 9 For Emergency Message Only