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CONNECTING THE POWER CORDS

We recommend connecting the power lead to the Ignition Switch Accessory
Terminal. This way, the transceiver is automatically turned off when the
ignition switch is turned off.

Or, the power cord may be connected to an available terminal on the fuse
block, or, to a point in the wiring harness. However, caution must be taken to
prevent a short circuit. If in doubt, contact your vehicle dealer for information.

5

This transceiver may be installed and used in any 12-volt DC
negative or positive ground system vehicle.

GROUND INFORMATION

Most newer U.S. and foreign made cars, and small trucks, use a negative
ground system. Some older cars, and some new large trucks, use a positive
ground system.
With a negative ground system, the negative (-) battery terminal is usually
connected to the vehicle motor block. If you cannot determine the polarity
system of your vehicle, contact your vehicle dealer for information.

Negative Ground System

If you have a negative ground system,
connect the 

red

DC power cord from

the transceiver to the positive (+) battery
terminal or other convenient point. 
Then connect the 

black

power cord to

the vehicle chassis or negative (-) battery
terminal.

Positive Ground System

If you have a positive ground
system,connect the 

black

DC power

cord from the transceiver to the negative
(-) battery terminal or other convenient
point. Then, connect the 

red

power

cord to the vehicle chassis or the
positive (+) battery terminal.

UC343FH  10/23/03  2:32 PM  Page 5

Summary of Contents for Bearcat PC78 Elite

Page 1: ......

Page 2: ...tenance 9 Maintenance 9 Troubleshooting 10 Servicing Your Transceiver 10 Radio Code Definitions 11 Specifications 12 Two Year Extended Warranty 13 Contents Carefully unpack your PC78 Elite and check t...

Page 3: ...equipment In doing so the FCC also decided to permit CB station operation without station identification Elimination of individual station licenses does not reduce the operating privileges or responsi...

Page 4: ...hannel 9 Channel Knob Selects channel 10 Channel Display Displays current channel selection 11 RX TX Indicator Red transmitting green receiving 12 ANT Indicates a high SWR condition in antenna system...

Page 5: ...eaker is plugged in the internal speaker is off To prevent acoustic feedback separate the microphone from the speaker when operating the PA at high output levels 17 CB WX PA Selects PA Public Address...

Page 6: ...alling an inferior antenna Only a properly matched antenna system will allow maximum power transfer from the 50 ohm transmission line to the radiating element Your Uniden dealer is qualified to help y...

Page 7: ...m Some older cars and some new large trucks use a positive ground system With a negative ground system the negative battery terminal is usually connected to the vehicle motor block If you cannot deter...

Page 8: ...can get through 4b Turn SQUELCH fully counter clockwise until you hear a hiss Everything gets through noise weaksignals and strong signals 4c Turn SQUELCH back clockwise until the hiss stops Only clea...

Page 9: ...er Channel knob to the channel with best reception Left at this setting you will hear only weather broadcasts and Weather Alert Signals To use your CB radio normally while monitoring for weather alert...

Page 10: ...t MIC GAIN 3 When the channel is clear press the microphone PTT switch and speak To measure SWR 1 Position meter switch to CAL 2 Press and hold microphone PTT switch Transmit 3 Calibrate meter with SW...

Page 11: ...Every six months 1 Check the Standing Wave Ratio SWR 2 Be sure all electrical connections are tight 3 Inspect antenna coaxial cable for wear or breaks in shielding 4 Be sure all screws and mounting h...

Page 12: ...IC GAIN and adjust to MAX 10 Troubleshooting Servicing Your Transceiver If you do not get satisfactory results after performing the above checks call the Uniden Customer Service Center at 1 800 297 10...

Page 13: ...0 29 Time is up for contact 10 30 Does not conform to FCC rules 10 32 I will give you a radio check 10 33 EMERGENCY TRAFFIC 10 34 Trouble at this station Code Meaning 10 35 Confidential information 10...

Page 14: ...e 300 to 3000 Hz Output Impedance 50 ohm unbalanced Receiver Sensitivity Less than 1 V for 10 dB S N N Selectivity 6 dB 7 kHz 60 dB 10 kHz Image Rejection 80 dB typical Adjacent Ch Rejection 60 dB typ...

Page 15: ...the unit with a new or refurbished unit THE LIMITED WARRANTY SET FORTH ABOVE IS THE SOLE AND ENTIRE WARRANTY PERTAINING TO THE PRODUCT AND IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES OF ANY NATUR...

Page 16: ......

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