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Uniden PC78XL CB 2-way mobile radio

1. Select a location that is convenient for operating the radio but does not interfere with the driver or passenger Install bracket with self tapping screws provided Connect wiring See instructions for Connecting the Power Cords Attach the microphone bracket to side of the radio voe wo N Attach radio to bracket MOBILE STATION ANTENNA Because the maximum power output of the transmitter is limited by the FCC the quality of your antenna is very important To achieve the maximum transmission distance we strongly recommend that you install only a high quality antenna You have just purchased a superior transceiver don t diminish its performance 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 However the efficiency of the short whip antenna is less than that of a full quarter wave whip antenna O MARINE INSTALLATION Consult your dealer for information regarding marine installation It is important to adequately ground the system and to prevent electrolysis between the fittings in the hull and the water pc78xl qxd 2 25 99 10 09 AM Pag CONNECTING THE POWER CORDS We recomm
2. and adjust to MAX Be sure antenna SWR is normal Check MIC GAIN and adjust to MAX Low Transmission CoOIOOOC OOOOOOOKCOOWOOND 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 Servicing Your Transceiver 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 highly recommend that you consult a qualified radio telephone technician for servicing and aligning this CB radio product Please read the Warning information on page 1 of this Guide When ordering parts be sure to specify the correct model number and serial number of the unit 10 a pc78xl qxd 2 25 99 10 09 AM Pag al Radio Code Definitions The following list contains common 10 Codes used by CB radio operators for faster communication and better understanding Code 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 10 10 10 11 10 12 10 13 10 16 10 17 10 18 10 19 10 20 10 21 10 22 10 23 10 24 10 25 10 26 10 27 10 28 10 29 10 30 10 32 10 33 10 34 Meaning Received poorly Receiving well Stop transmitting OK message received Relay message Busy stand by Out of service leaving air In service sub
3. COVER pc78xl qxd 2 25 99 10 09 AM Pag Description nu ar A ve in eh ei yee ea 1 Elimination of Licensing 2222cceeeeseeeeseeee nennen 1 Gontr ls and Functions irisse ee Sr kat ah 2 Installation sen a ee Des ei a ed 4 Mobile Station Installation eee eee 4 Mobile Station Antenna o 4 Marine Installation ass as set a are ae tb dep 4 Connecting the Power Cords oocoooococccccco eens 5 Ground Information sess tE Ov cals an ern 5 Negative Ground System 1 0 coco 5 Positive Ground System secret 5 TO RECEIVE is Sn ee er Gow wand deal 6 TOTES M a a ran A Ua BG a Ses 7 Multi Function Meter o oooooooo e eee eee 8 Preventive Maintenance sis ande ta ar th de vee tackled een 9 Maintenance sran aci 9 Servicing Your Transceiver eee 10 Troubleshooting men sles alo te Rane 10 Radio Code Definitions rensie ende a ond Bake en 11 Specifications ar a as ae erase aaa 12 Two Year Extended Warranty 0 0 00 coc 13 Unpacking Carefully unpack your PC78XL and check the contents against this list E PC78XL CB 2 way mobile radio Microphone Mounting Bracket Kit DC Power Cord Reference Guide Part 95 Subpart D FCC Rules Product Registration Card If any items are missing or damaged contact your place of purchase immediately Please be sure to complete and mail your Product Registration Card 4 pc78xl qxd 2 25 99 10 09 AM Pag Your Uniden PC78XL represents the highes
4. an 10 dB change in audio output for inputs rom 10 to 50 000 uV Adjustable for optimum signal reception 1 5 kHz continuously adjustable RF type Adjustable threshold less than 1 yV 4 watts 300 to 3000 Hz Less than 7 at 3 watts 1000 Hz 16 ohms round 8 ohms disables internal speaker when connected 4 watts into external speaker 8 ohms when CB PA switch is in PA The PA also monitors the receiver separate jack provided Specifications shown are typical and subject to change without notification 12 4 pc78xl qxd 2 25 99 10 09 AM Pag 3 Two Year Extended Warranty Important Evidence of original purchase is required for warranty service WARRANTOR UNIDEN AMERICA CORPORATION Uniden ELEMENTS OF WARRANTY Uniden warrants for two years to the original retail owner this Uniden Product to be free from defects in materials and craftsmanship with only the limitations or exclusions set out below WARRANTY DURATION This warranty to the original user shall terminate and be of no further effect two years after the date of original retail sale The warranty is invalid if the Product is A damaged or not maintained as reasonable or necessary B modified altered or used as part of any conversion kits subassemblies or any configurations not sold by Uniden C improperly installed D serviced or repaired by someone other than an authorized Uniden service center for a defect or malfunction covere
5. d by this warranty E used in any conjunction with equipment or parts or as part of any system not manufactured by Uniden or F installed or programmed by anyone other than as detailed by the owner s manual for this product STATEMENT OF REMEDY In the event that the product does not conform to this warranty at any time while this warranty is in effect warrantor will either at its option repair or replace the defective unit and return it to you without charge for parts service or any other cost except shipping and handling incurred by warrantor or its representatives in connection with the performance of this warranty Warrantor at its option may replace 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 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 THE REIMBURSEMENT OR PAYMENT OF INCIDENTAL OR CONSEQUENTIAL DAMAGES Some states do not allow this exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you LEGAL REMEDIES This warranty gives you specific legal rights and you may also have other rights which vary from state to state This warranty is void ou
6. e all subject to change without notice Emergency Operation 1 Setthe switch to CH9 or turn Channel Selector knob to Channel 9 Press PTTswitch on microphone and speak clearly If there is no response select an active channel and ask that party to relay your emergency broadcast on Channel 9 All channels 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 pc78xl qxd 2 25 99 10 09 AM Pag Controls and Functions 18 17 16 15 14 13 121110 9 Uniden ys PO78XL S RF Ah ANL I ND a FRONT VIEW PC78XL BACKLIGHTED PANEL Microphone Jack ON OFF VOLUME Turns radio on or off adjusts speaker volume SQUELCH Reduces background noise when there is no incoming signal RF GAIN Improves reception in strong signal areas MIC GAIN Adjusts microphone sensitivity DELTA TUNE Fine tunes the receiver SWR CAL Calibrates the meter for Standing Wave Ratio SWR measurements Channel Knob Selects channel Channel Display Displays current channel selection RX TX Indicator Red transmitting green receiving ANT Indicates a high SWR condition in antenna system Check antenna cable and connections Dy
7. end 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 Ifin doubt contact your vehicle dealer for information GROUND INFORMATION This transceiver may be installed and used in any 12 volt DC negative or positive ground system vehicle 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 OR BLACK to RED BLACK chassis Positive Ground System If you have a positive ground system connect the black DC power cord from OR KZ the transceiver to the negative battery terminal or other convenient point Then to BLACK HED p BLACK co
8. ject to call Repeat message Transmission completed standing by Talking too rapidly Visitors present Advise Weather Road conditions Make pickup at Urgent business Anything for us Nothing for you return to base My location is Call by telephone Report in person to Stand by Completed last assignment Can you contact Disregard last information Tam moving to channel Identify your station Time is up for contact Does not conform to FCC rules I will give you a radio check EMERGENCY TRAFFIC Trouble at this station Code 10 35 10 36 10 37 10 38 10 39 10 41 10 42 10 43 10 44 10 45 10 50 10 60 10 62 10 63 10 64 10 65 10 67 10 70 10 71 10 77 10 81 10 82 10 84 10 85 10 91 10 93 10 94 10 99 Meaning Confidential information Correct time is Wrecker needed at Ambulance needed at Your message is delivered Please turn to channel Traffic accident at Traffic tie up at I have a message for you All units within range please report Break channel What is next message number Unable to copy use phone Net directed to Net clear Awaiting your next message assignment All units comply Fire at Proceed with transmission in sequence Negative contact Reserve hotel room for Reserve room for My telephone number is My address is Talk closer to microphone Check my frequency on this channel Please give me a long count Mission completed all units secure 10 200 Police
9. namic Squelch Control DSC Automatically sets Squelch to optimal level for stronger signals CH9 OFF Turns Channel 9 on or off BRT DIM Adjusts the brightness of LED Channel Display and Indicator and RF Signal Meter CB PA Switch Selects PA Public Address or CB Do not use PA function unless an external speaker is connected pc78xl qxd 2 25 99 10 09 AM Pag 16 NB ANL ANL OFF Reduces external noise and interference from vehicle ignition systems 17 S RF SWR CAL Selects meter function S RF normal SWR and CAL are for SWR measurements only See page 8 for calibration procedures 18 Multi function Meter Measures SWR RF and S signal strength 22 21 20 GN GN PA SP EXT SP POWER 19 REAR VIEW 19 POWER Connects DC power to transceiver 20 EXT SP Connects optional 8 ohm 4 watt speaker to remotely monitor receiver When the external speaker is plugged in the internal speaker is off 21 PA SP Connects external 8 ohm 4 watt speaker to use as public address system To prevent acoustic feedback separate the microphone from the speaker when operating the PA at high output levels 22 ANT Connects antenna cable to transceiver pc78xl qxd 2 25 99 10 09 AM Pag Installation MOBILE STATION INSTALLATION Plan the location of the transceiver and microphone bracket before beginning installation
10. needed at 11 4 pc78xl qxd 2 25 99 Specifications General Channels Frequency Range Frequency Control Frequency Tolerance Operating Temperature Microphone Input Voltage Current Drain Size Weight Antenna Connector Meter Transmitter Power Output Modulation Frequency Response Output Impedance Receiver Sensitivity Selectivity Image Rejection Adjacent Ch Rejection IF Frequencies Automatic Gain Control AGC RF Gain Control Delta Tune Range Noise Blanker Squelch Audio Output Power Frequency Response Distortion Internal Speaker External Speaker not supplied PA System Power Output External Speaker for PA speaker not supplied 10 09 AM Pag 2 40 26 965 to 27 405 MHz Phase Locked Loop PLL synthesizer 0 002 30 to 50 C 10 C to 50 C DSC on Plug in type dynamic 13 8 VDC nominal positive or negative ground TX AM full modulation 2 2A max RX Squelched 0 3A with maximum audio output 1 2A nominal 7 9 32 W x 8 57 64 D x 2 13 64 H 4 lbs 3 oz with microphone JHF SQ 239 lluminated indicates relative power output and received signal strength 4 watts High and low level Class B amplitude modulation 300 to 3000 Hz 50 ohm unbalanced Less than 14V for 10 dB S N N 6 dB 7 kHz 60 dB 10 kHz 80 dB typical 60 dB typical Double Conversion 1st 10 695 MHz 2nd 455 kHz Less th
11. nnect the red power cord to the ss ug BATT vehicle chassis or the positive battery terminal pc78xl qxd 2 25 99 10 09 AM Pag To Receive Be sure that the power source antenna and microphone are properly connected before proceeding 1 Turn unit ON and set VOLUME Control to a comfortable level 2 Select CHANNEL 3 Set switch to NB ANL VOLUME NB oO OFF Dynamic Squelch Control automatically sets Squelch to the optimal level for stronger transmission and signal clarity To scan for weaker signals turn off Dynamic Squelch Control and perform the following steps 4 Turn SQUELCH 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 SQUELCH SQUELCH SQUELCH STRONG SIGNALS MEDIUM SIGNALS WEAK SIGNALS gt NE STRONG SIGNALS gt MEDIONSIGNALS gt WEAK SIGNALS gt NSEZZZZZZZA gt STRONG SIGNALS MEDIUM SIGNALS WEAK SIGNALS NOISE 2 pc78xl qxd 5 6 7 2 25 99 10 09 AM Pag Adjust RF GAIN knob small RF GAIN to optimize reception in strong signal areas Adjust DELTA TUNE DELTA TUNE knob to reduce or eliminate adjacent channel inte
12. rference Set meter switch to S RF 1 2 Perform a voltage Standing Wave Ratio SWR measurement prior to using the transmitter A SWR ratio in excess of 2 1 may damage the transmitter a Be sure to read and understand Part 95 FCC Rules and Regulations before operating your transmitter Select channel Adjust MIC GAIN MIC GAIN When the channel is clear press the microphone PTT switch and speak pc78xl qxd 2 25 99 10 09 AM Pag Multi Function Meter SWR Meter Measures SWR standing wave ratio of antenna Use it to check the antenna system or to adjust your antenna to the proper length To measure SWR 1 Position meter switch to CAL ENTE 2 Press microphone PTT rm switch Transmit 3 5 79 30dB 3 Calibrate meter with the SWR CAL control by adjusting the needle to the Y mark 4 Move the meter switch to the SWR position while pressing the microphone PTT switch A reading below 2 is acceptable Higher readings indicate a problem in the antenna system Problems may be caused by humidity vibration or corrosion Check both ends of the coaxial cable connector Also check for damage to the cable or antenna RF Meter Measures RF Output Power for transmitter To use position the meter switch at S RF Press microphone PTT switch to read transmitting power S Meter Measures incoming signal strength To use position the meter switch at S RF The meter s
13. t quality communications device designed for use in the Citizens Band Radio Service It will operate on any of the 40 AM frequencies authorized by the Federal Communications Commission FCO The Citizens Band Radio Service is under the jurisdiction of the Federal Communications Commission FCC Any adjustments or alterations which would alter the performance of the transceiver s original FCC type acceptance or which would change the frequency determining method are strictly prohibited Replacement or substitution of crystal transistors ICs regulator diodes or any other part of a unique nature with parts other than those recommend by Uniden may cause violations of the technical regulations in Part 95 of the FCC Rules or in violation of type acceptance requirements in Part 2 of the rules Elimination of Licensing The FCC has ruled that CB Radio Service operators are no longer required to obtain an FCC License to operate their CB 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 responsibilities of CB users An operator of a CB radio station is still required to comply with the Communications Act and with the rules of Citizens Band Radio Service Uniden is a registered trademark of Uniden America Corporation Features Specifications and availability of Optional Accessories ar
14. tside the United States of America PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY If after following the instructions in the owner s manual you are certain that the Product is defective pack the Product carefully preferably in its original packaging The Product should include all parts and accessories originally packaged with the Product Include evidence of original purchase and a note describing the defect that has caused you to return it The Product should be shipped freight prepaid by traceable means to warrantor at Uniden America Corporation Parts and Service Division 4700 Amon Carter Blvd Fort Worth TX 76155 800 297 1023 8 a m to 5 p m Central Monday through Friday 13 4 pc78xl qxd 2 25 99 10 09 AM Basen back cover
15. wings to indicate signal strength ie 3 S5 S7 pc78xl qxd 2 25 99 10 09 AM Pag Preventive Maintenance 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 hardware are tight Maintenance The PC78XL is designed to give you years of trouble free service There are no 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 PC78XL Failure to do so may void your warranty pc78xl qxd 2 25 99 10 09 AM Pag 0 Troubleshooting Problem Suggestion Unit does not power up Check the ignition key position Check power cord connections Check fuse Check vehicle electrical system Check microphone connection Set CB PA switch to CB Check VOLUME and SQUELCH Check antenna No reception Check antenna connection Set RF GAIN to MAX Check VOLUME and SQUELCH Be sure antenna SWR is normal Set RF GAIN to MAX Check and adjust DELTA TUNE Poor Reception No Transmission Set CB PA switch to CB Check microphone connection Check MIC GAIN

Uniden PC78XL CB 2-way mobile radio

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