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5

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.

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.

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

pc68ltw.qxd  2/23/99  3:09 PM  Page 5

Summary of Contents for PC68LTW - Bearcat Pro

Page 1: ...COVER pc68ltw qxd 2 23 99 3 09 PM Page 1 ...

Page 2: ... Maintenance 9 Troubleshooting 10 Servicing Your Transceiver 10 Specifications 11 Radio Code Definitions 13 Carefully unpack your PC68LTW and check the contents against this list n PC68LTW CB 2 way mobile radio n Microphone n Mounting Bracket Kit n DC Power Cord n Reference Guide n Part 95 Subpart D FCC Rules n Product Registration Card If any items are missing or damaged contact your place of pur...

Page 3: ...annels except Channel 9 may be used for normal communication Channel 9 is reserved by the FCC for emergency communications involving the immediate safety of individuals or protection of property Channel 9 may also be used to render assistance to a motorist This is an FCC rule and applies to all operators of CB radios E Em me er rg ge en nc cy y O Op pe er ra at ti io on n Features Specifications a...

Page 4: ... green receiving 10 CH 9 Indicator Red Channel 9 switch is on 11 Dynamic Squelch Control DSC Automatically sets Squelch to optimal level for stronger signals 12 CH9 OFF Turns Channel 9 on or off 13 BRT DIM Adjusts the brightness of LED Channel Display and Indicator and RF Signal Meter 14 NB ANL Reduces external noise and interference from vehicle ignition systems 15 CB WX PA Switch Selects PA Publ...

Page 5: ...nnects optional external 8 ohm 4 watt speaker for use as a public address system 20 ANT Connects antenna cable to transceiver To prevent acoustic feedback separate the microphone from the speaker when operating the PA at high output levels When the external speaker is plugged in the internal speaker is off pc68ltw qxd 2 23 99 3 09 PM Page 3 ...

Page 6: ...formance by installing 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 you select the proper antenna for your requirements A whip style antenna may be used for automobile installation A short loaded whip antenna is easier to install on an automobile Howeve...

Page 7: ...he 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 ...

Page 8: ...ELCH fully clockwise so only strong signals can get through 4b Turn SQUELCH fully counter clockwise until you hear a hiss Everything gets through noise weak signals and strong signals 4c Turn SQUELCH back clockwise until the hiss stops Only clearer signals get through Set SQUELCH only when the radio is not receiving a strong signal Be sure that the power source antenna and microphone are properly ...

Page 9: ...transmitting power S Meter Measures incoming signal strength The meter swings to indicate signal strength i e S 3 S 5 S 7 F Fu un nc ct ti io on n M Me et te er r Be sure to read and understand Part 95 FCC Rules and Regulations before operating your transmitter Perform a voltage Standing Wave Ratio SWR measurement prior to using the transmitter A SWR ratio in excess of 2 1 may damage the transmitt...

Page 10: ...hannel 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 alerts set the switch to CB When you hear a Weather Alert Signal and desire to hear weather information reset the switch to WX If you want to stop the weather alert signal while using your CB radio or if you d...

Page 11: ...user serviceable parts inside Except for the fuse in the DC power cord no maintenance is required To replace a blown fuse 1 Press ends of the fuse holder together Twist to open Carefully separate the two pieces 2 Remove the fuse and inspect If blown replace with the same type fuse Use only the fuse specified for your PC68LTW Failure to do so may void your warranty M Ma ai in nt te en na an nc ce e...

Page 12: ...o MAX If you do not get satisfactory results after performing the above checks call the Uniden Customer Service Center at 1 800 297 1023 8 00 a m to 5 00 p m CST Monday through Friday Technical information diagrams and charts are provided on request It is the user s responsibility to see that this radio is operating at all times in accordance with the FCC Citizens Radio Service regulations We high...

Page 13: ...atts Emission Type 6A3 Hum and Noise Better than 40 dB Frequency Tolerance 0 002 Modulation Percentage Peak 100 Spurious Rejection 70 dB Output Impedance 50 ohm unbalanced RECEIVER Sensitivity at 10 dB S N N 0 5 µV Sensitivity at 500 mW Audio Output 0 5 µV Squelch Threshold 0 5 µV Antenna Impedance 50 ohms Squelch Tight 1000 µV Signal Meter S 9 100 µV Audio Output Power max 5 watts Audio Output 10...

Page 14: ...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 NATURE WHATSOEVER WHETHER EXPRESS IMPLIED OR ARISING BY OPERATION OF LAW INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE THIS WARRANTY DOES NOT COVER OR PROVIDE FOR TH...

Page 15: ...tify your station 10 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 36 Correct time is 10 37 Wrecker needed at 10 38 Ambulance needed at 10 39 Your message is delivered 10 41 Please turn to channel 10 42 Traffic accident at 10 43 Traffic tie up at ...

Page 16: ...back cover pc68ltw qxd 2 23 99 3 09 PM Page 14 ...

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