CONTENTS DESCRIPTION ................5 EMERGENCY OPERATIONS ................5 WHAT’S IN THE BOX ..................5 FRONT VIEW ....................6 REAR VIEW ..................... 7 INSTALLATION ................7 MOBILE INSTALLATION ................7 Mobile Antenna ................... 8 Connecting the Power Cords............... 8 Ground Information ..................9 USING YOUR PC78LTD .............
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.
If any items are missing or damaged, contact our Customer Care Line immediately at 1-800-658-8068. Never use damaged products! FRONT VIEW Item Definition Microphone jack ON OFF - VOLUME: Turns radio on or off; adjusts speaker volume. SQUELCH: Reduces background noise when there is no incoming signal.
Item Definition NB/ANL/ANL/OFF switch: Reduces external noise and interfer- ence from vehicle ignition systems. S/RF/SWR/ CAL switch: Selects meter function. S/RF- normal; SWR and CAL are for SWR measurements only. See page 11 for calibration procedures. Multi-function meter: Measures SWR, RF and S signal strength. REAR VIEW Item Definition...
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.
This transceiver may be installed and used in any 12-volt DC negative 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.
USING YOUR PC78LTD TURN PC78LTD ON/OFF Turn the VOLUME knob clockwise until the unit turns on and the display backlight turns on. Turn the VOLUME knob counter-clockwise to turn the unit off. CB MODE Be sure that the power source, antenna, and microphone are properly connected before proceeding.
3. Release when finished. To prevent acoustic feedback, separate the microphone from the speaker when operating the PA at high output levels. If you are in PA mode but not pressing PTT, the radio receives CB transmissions and transmits them through the PA speaker. You cannot respond to the transmission.
A reading less than two is acceptable. Higher readings indicate a problem in the antenna system. Problems may be caused by humidity, vibration, a mistuned antenna, or corrosion. Check both ends of the coaxial cable connector. Also check for damage to the cable or antenna. Tune the antenna according to the instructions that came with the antenna.
Check all antenna connections. If you do not get satisfactory results after performing these checks, call the Uniden Customer Service Center at 1-800-297-1023, 8:00 a.m. to 4:30 p.m. CST, Monday through Friday. SPECIFICATIONS GENERAL...
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Current Drain: TX: AM Full Modulation: 2.2A (max) RX: Squelched, 0.4 A; with maximum audio output, 1.2A (nominal) Size (W x D x H): 7-9/32 in. x 7-51/64 in. x 2-13/64 in. (without knobs and jacks) Weight: 3 lb with microphone Antenna Connector: UHF, SO-239 TRANSMITTER...
PA SYSTEM Power Output: 4 Watts into external speaker 8 ohms when CB/PA switch in in PA. The PA External Speaker for PA Speaker (not supplied): also monitors the receiver; separate jack provided. Specifications shown are typical and subject to change without notice. RADIO CODE DEFINITIONS 10-CODES The following list contains common “10-Codes”...
Never transmit if any person is closer than the specified distance to the antenna. Note that Uniden does not specify or supply any antenna with this transceiver. While a 0 dBi gain antenna is normal for a typical installation,...
WARRANTOR: UNIDEN AMERICA CORPORATION (“Uniden”) ELEMENTS OF WARRANTY: Uniden warrants, for one year, 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 one year after the date of original retail sale.
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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...
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743 Henrietta Creek Road, Suite 100 Roanoke, TX 76262 (800) 297-1023, 8 a.m. to 5 p.m., Central, Monday through Friday...