® 680 Owner’s Manual Printed in China U01UT389ZZA(0)
Contents SAFETY NOTICE..................................................................................................3 Unpacking........................................................................................................3 Description .....................................................................................................3 Emergency Operation .................................................................................4 Controls and Functions...................................
SAFETY NOTICE The antenna used for this radio must be properly installed and maintained and must provide a separation distance of at least 34 cm (13.4 Inches) from all persons and must not be collocated or operated in conjunction with any other antenna or transmitter. 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.
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. Emergency Operation 1.
6. 7. 8. 9. Microphone socket (6 poles) 9/19: Emergency channel selection. LO/DX: RF Gain. Improves reception in strong signal areas. PA/CB: Selects PA (Public Address) or CB (Citizens Band). Do not use PA function unless an external speaker is connected. 10. ANL/NB: Turns ANL (Automatic Noise Limiter)/NB (Noise Blanker) feature on and off. ANL reduces external noise and NB reduces interference from vehicle ignition systems. 11. HI/LO: Adjusts microphone sensitivity (Mic gain). 12.
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 page 7). 4. Attach the microphone bracket to side of the radio. 5. Attach radio to bracket.
caution must be taken to prevent a short circuit. If in doubt, contact your vehicle dealer for information. Ground Information This transceiver may be installed and used in any 12-volt DC negative ground system vehicle. Negative Ground System With a negative ground system, the negative (-) battery terminal is usually connected to the vehicle motor block. Connect the red DC power cord from the transceiver to the positive (+) battery terminal or other convenient point.
3 on page 4) displays this data. Press and hold the PTT button on the microphone to see the RF output power levels. Release the PTT button to see incoming signal strengh. Receive Be sure that the power source, antenna, and microphone are properly connected before proceeding. Turn unit ON. Set VOLUME to a comfortable level. Select CHANNEL. Set noise limitations as desired (ANL/NB). Adjust squelch. Turn SQUELCH fully clockwise so only strong signals can get through.
3. When the channel is clear, press the PTT button and speak. Release the button when you have finished speaking. PTT You can also transmit while you are on emergency channels 9 or 19. Press the PTT button to transmit emergency information. Preventive Maintenance Every six months: 1. 2. 3. 4. Check the Standing Wave Ratio (SWR). Be sure all electrical connections are tight. Inspect antenna coaxial cable for wear or breaks in shielding. Be sure all screws and mounting hardware are tight.
Troubleshooting In the event of system malfunction, perform the following procedures: Problem Unit does not power up No reception Poor Reception No Transmission Low Transmission Suggestion • Check power cord connections. • Check fuse. • Check vehicle electrical system. • Check microphone connection. • Set CB/PA to CB. • Check VOLUME and SQUELCH. • Check antenna. • Check antenna connection. • Set LO/DX to DX. • Check VOLUME and SQUELCH. • Be sure antenna SWR is normal. • Set LO/DX to DX.
SpEcifications GENERAL Channel: 40 Frequency Range: 26.965 - 27.405 MHz Frequency Control: PLL Synthesizer Antenna Impedance: 50 ohms Power Input: 13.8VDC Current Drain TX: AM Full Modulation 1.5A (max) RX: At no signal: 200mA Operating Temperature: -22°F to 140°F (-30°C to 60°C) Accessories: DC Power Cord Microphone Microphone Hanger Mounting Bracket Size (W x D x H): 6.3 in x 6.3 in. x 2.2 in. (without knobs and jacks) (160 mm x 160 mm x 54 mm) Weight: 2.
Adjacent Channel Rejection: 55dB Image Rejection: 65dB Internal Speaker Impedance: 16 ohms External Speaker Impedance: 8 ohms PUBLIC ADDRESS Output Power at 10% Distortion: 4 watts Specifications shown are typical and subject to change without notice. Two-Year Extended Warranty Important: Evidence of original purchase is required for warranty service.
ranty. 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.
Radio Code Definitions The following list contains common “10-Codes” used by CB radio operators for faster communication and better understanding.
