Uniden CD Player PC78 User Manual

 
UC343FH 10/23/03 2:32 PM Page 1  
Description  
Your Uniden PC78 Elite represents the highest 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 (FCC).  
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 certification, 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 certification 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 are subject to change without notice.  
Emergency Operation  
1. Set the switch to CH9 or turn Channel Selector knob to Channel 9.  
2. Press the microphone PTT switch and speak clearly.  
3. 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 communication 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.  
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Controls and Functions  
FRONT VIEW - PC78 Elite BACKLIGHTED PANEL  
1. Microphone Jack  
2. ON OFF - VOLUME: Turns radio on or off; adjusts speaker volume.  
3. SQUELCH: Reduces background noise when there is  
no incoming signal.  
4. RF GAIN: Improves reception in strong signal areas.  
5. MIC GAIN: Adjusts microphone sensitivity.  
6. DELTA TUNE: Fine tunes the receiver.  
7. SWR: Calibrates the meter for Standing Wave Ratio  
(SWR) measurements.  
8. Weather Channel Knob: Selects weather channel.  
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. Check  
antenna, cable and connections.  
13. Dynamic Squelch Control (DSC): Automatically sets Squelch to  
optimal level for stronger signals.  
14. CH9/OFF: Turns Channel 9 on or off.  
15. BRT/DIM: Adjusts the brightness of LED.  
16. NB/ANL: Reduces external noise and interference from vehicle  
ignition systems.  
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17. CB/WX/PA: Selects PA (Public Address) WX (Weather Radio) or CB.  
Do not use PA function unless an external  
speaker is connected.  
18. S/RF/SWR/ CAL: Selects meter function. S/RF- normal;  
SWR and CAL are for SWR measurements only. See page 8 for  
calibration procedures.  
19. Multi-function Meter: Measures SWR, RF and S signal strength.  
REAR VIEW  
20. POWER: Connects DC power to transceiver.  
21. 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.  
22. PA SP.: Connects external 8-ohm, 4-watt speaker.  
To prevent acoustic feedback, separate the  
microphone from the speaker when operating  
the PA at high output levels.  
23. ANT.: Connects antenna cable to transceiver.  
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Installation  
MOBILE STATION INSTALLATION  
Plan the location of the transceiver and  
microphone bracket before beginning installation.  
1. Select a location that is convenient for operating the radio, but does  
not interfere with the driver or passenger.  
2. Install bracket with self-tapping screws provided.  
3. Connect wiring. (See instructions for Connecting the Power Cords.)  
4. Attach the microphone bracket to the side of the radio.  
5. 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.  
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.  
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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.  
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.  
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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.  
Dynamic Squelch Control automatically sets Squelch to the optimal level  
for stronger transmission and signal clarity. To scan for weaker signals,turn  
Dynamic Squelch Control off and perform the following steps:  
4a. 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,  
weaksignals, and strong signals.  
4c. Turn SQUELCH back clockwise until  
the hiss stops. Only clearer signals get  
through.  
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Set SQUELCH only when  
the radio is not receiving  
a strong signal.  
5. Adjust RF GAIN knob (small) to  
optimize reception in strong signal  
areas.  
6. Adjust DELTA knob (small) to  
reduce or eliminate adjacent  
channel interference.  
7. Set meter switch to S/RF.  
Weather Information  
Your PC78 Elite combines a CB Radio with a Weather Radio and a  
Weather Alert System. The Weather Radio continually broadcasts weather  
conditions. The Weather Alert System sounds a seven-second signal in the  
event of severe weather.  
To configure your CB radio to receive weather  
alerts while using your CB radio:  
1. Set the switch to WX.  
2. Turn the Weather 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 alerts, set the switch to CB.  
When you hear a Weather Alert Signal, and desire to  
hear weather information, return the switch to WX.  
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To Transmit  
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.  
Be sure to read and understand Part 95, FCC Rules and  
Regulations before operating your transmitter.  
1. Select a channel.  
2. Adjust MIC GAIN.  
3. When the channel is clear, press the  
microphone PTT switch and speak.  
Multi-Function Meter  
SWR Meter: Measures SWR (standing wave ratio) of antenna. Use to check  
antenna system or to adjust your antenna to the proper length.  
To measure SWR:  
1. Position meter switch  
to CAL.  
2. Press and hold  
microphone PTT  
switch. (Transmit)  
3. Calibrate meter with  
SWR knob by adjusting the  
needle to the M mark.  
4. Move the meter switch to the  
SWR position while pressing the  
microphone PTT switch.  
5. Release the PTT switch.  
A reading following two 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.  
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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 swings to indicate signal strength.  
i.e. S 3, S 5, S 7 . . .  
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 hard ware are tight.  
Maintenance  
The PC78 Elite 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 PC78 Elite.  
Failure to do so may void your warranty.  
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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/WX/PA switch to CB.  
Check VOLUME and SQUELCH.  
Check antenna.  
No reception  
Check antenna connection.  
Set RF GAIN to MAX.  
Poor Reception  
Check VOLUME and SQUELCH.  
Be sure antenna SWR is normal.  
Set RF GAIN to MAX.  
Check and adjust DELTA TUNE.  
Set CB/WX/PA switch to CB.  
Check microphone connection.  
Check MIC GAIN and adjust to MAX.  
Be sure antenna SWR is normal.  
Check MIC GAIN and adjust to MAX.  
No Transmission  
Low Transmission  
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.  
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Radio Code Definitions  
The following list contains common “10-Codes” used by CB radio  
operators for faster communication and better understanding.  
Code  
Meaning  
Code  
Meaning  
10-1 Received poorly  
10-2 Receiving well  
10-3 Stop transmitting  
10-4 OK, message received  
10-5 Relay message  
10-6 Busy, stand by  
10-7 Out of service, leaving air  
10-8 In service, subject to call  
10-9 Repeat message  
10-10 Transmission completed,  
standing by  
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  
10-44 I have a message for you  
10-45 All units within range  
please report  
10-11 Talking too rapidly  
10-12 Visitors present  
10-13 Advise Weather/  
Road conditions  
10-16 Make pickup at  
10-17 Urgent business  
10-18 Anything for us?  
10-19 Nothing for you, return  
to base  
10-50 Break channel  
10-60 What is next  
message number  
10-62 Unable to copy, use phone  
10-63 Net directed to  
10-64 Net clear  
10-65 Awaiting your next  
message/assignment  
10-67 All units comply  
10-70 Fire at  
10-20 My location is  
10-21 Call by telephone  
10-22 Report in person to  
10-23 Stand by  
10-71 Proceed with transmission  
in sequence  
10-77 Negative contact  
10-81 Reserve hotel room for  
10-82 Reserve room for  
10-84 My telephone number is  
10-85 My address is  
10-91 Talk closer to microphone  
10-93 Check my frequency on  
this channel  
10-94 Please give me a  
long count  
10-99 Mission completed, all  
units secure  
10-24 Completed last assignment  
10-25 Can you contact  
10-26 Disregard last information  
10-27 I am moving to channel  
10-28 Identify 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  
10-200 Police needed at  
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Specifications  
General  
Channels:  
40  
CB Frequency Range:  
Weather Frequency Range:  
26.965 to 27.405 MHz  
162.400MHz (WX CH1)  
162.425MHz (WX CH2)  
162.450MHz (WX CH3)  
162.475MHz (WX CH4)  
162.500MHz (WX CH5)  
162.525MHz (WX CH6)  
162.550MHz (WX CH7)  
Frequency Control:  
Frequency Tolerance:  
Operating Temperature:  
Phase Locked Loop (PLL) synthesizer  
0.002%  
-30˚C to +60˚C (CB)  
-10˚C to +60˚C (WX)  
-10˚C to +60˚C (DSC on)  
Plug-in type; 600 ohms dynamic  
13.8 VDC nominal (positive or negative ground)  
TX: AM full modulation, 2.2 A (max.)  
RX: Squelched, 0.4 A; with maximum audio output,  
1.2A (nominal)  
Microphone:  
Input Voltage:  
Current Drain:  
Size:  
Weight:  
Antenna Connector:  
Meter:  
7-9/32” W x 8-57/64” D x 2-13/64” H  
4 lbs. 3 oz. with microphone  
UHF, SQ-239  
Illuminated; indicates relative power output and received  
signal strength SWR.  
Transmitter  
Power Output:  
4 watts  
Modulation:  
Frequency Response:  
Output Impedance:  
High- and low-level, Class B amplitude modulation  
300 to 3000 Hz  
50 ohm, unbalanced  
Receiver  
Sensitivity:  
Selectivity:  
Image Rejection:  
Adjacent-Ch. Rejection:  
Less than 1 µV for 10 dB, (S+N)/N  
6 dB @ 7 kHz, 60 dB; @10 kHz  
80 dB typical  
60 dB typical  
IF Frequencies: Double Conversion: 1st: 10,695 MHz; 2nd: 455 kHz  
Automatic Gain Control (AGC):  
Less than 10 dB change in audio output for inputs from  
10 to 50,000 µV  
RF Gain Control:  
Delta Tune Range:  
Noise Blanker:  
Squelch:  
Audio Output Power:  
Frequency Response:  
Distortion:  
Internal Speaker:  
External Speaker:  
(not supplied)  
Adjustable for optimum signal reception  
1.5 kHz, continuously adjustable  
RF type  
Adjustable; threshold less than 1 µV  
4 watts  
300 to 3000 Hz  
Less than 7% at 3 watts, 1000 Hz  
16 ohms, round  
8 ohms, disables internal speaker when connected  
PA System  
Power Output:  
External Speaker for PA  
speaker:  
4 watts into external speaker  
8 ohms when CB/PA switch is in PA. The PA  
(not supplied)  
also monitors the receiver; separate jack provided.  
Specifications shown are typical and subject to change without notification.  
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UC343FH 10/23/03 2:32 PM Page 13  
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 covered 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 outside  
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  
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