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®
680
Owner’s Manual
Printed in China
U01UT389ZZA(0)
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CONTENTS
SAFETY NOTICE .................................................................................................3
UNPACKING .......................................................................................................3
DESCRIPTION ....................................................................................................3
EMERGENCY OPERATION ................................................................................4
CONTROLS AND FUNCTIONS ...........................................................................4
INSTALLATION ..................................................................................................6
MOBILE STATION INSTALLATION .............................................................. 6
Mobile Station Antenna .............................................................................. 6
Connecting the Power Cords ...................................................................... 6
Ground Information ................................................................................... 7
INSTALL 6PIN TO 4PIN ADAPTER ............................................................. 7
MARINE INSTALLATION ............................................................................... 7
USING YOUR BEARCAT 680 ..............................................................................7
S/RF METER ................................................................................................... 7
RECEIVE ......................................................................................................... 8
TRANSMIT ..................................................................................................... 8
PREVENTIVE MAINTENANCE ...........................................................................9
MAINTENANCE .................................................................................................9
TROUBLESHOOTING ......................................................................................10
SERVICING YOUR TRANSCEIVER ...................................................................10
SPECIFICATIONS ..............................................................................................11
TWOYEAR EXTENDED WARRANTY ..............................................................12
RADIO CODE DEFINITIONS ............................................................................14
Uniden is a registered trademark of Uniden America Corporation.
Bearcat is a registered trademark of Uniden America Corporation.
Features, specications, and availability of optional accessories are all subject to
change without notice.
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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. While a 0 dBi gain antenna is normal for a typical installation,
the above limit applies to any antenna with up to 3 dBi gain.
Changes or modifications to this product or use of accessories not
expressly approved by Uniden, or operation of this product in any way
other than as provided in the Uniden Owner’s Manual could void your
authority to operate this product.
UNPACKING
Unpack your Bearcat 680 and check the contents against this list:
Bearcat 680 CB 2-way mobile radio
Microphone
Mounting Bracket Kit
DC Power Cord
6-pin to 4-pin microphone adapter
Reference Guide
Part 95 Subpart D (FCC Rules)
If any items are missing or damaged, contact your place of purchase
immediately.
DESCRIPTION
Your Uniden Bearcat 680 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
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alter the performance of the transceiver's original FCC type acceptance, or which
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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. Press 9/19 or turn Channel Selector knob to Channel 9.
2. Press PTT switch on microphone 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. The FCC
reserves Channel 9 for emergencies involving the immediate safety of individuals
or protection of property. Use Channel 9 to render assistance to a motorist.
This is an FCC rule and applies to all CB radio operators.
CONTROLS AND FUNCTIONS
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9 10 11
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1. Volume Control knob with Power On/O.
2. SQUELCH knob: Reduces background noise when there is no
incoming signal.
3. S/RF Meter: Displays Send/Receive signal strength.
4. Channel Number display.
5. Channel selection knob: Selects transmission and reception
channels.
All channels except Channel 9 may be used for normal communication. The FCC
reserves Channel 9 for emergencies involving the immediate safety of individuals
or protection of property. Use Channel 9 to render assistance to a motorist.
This is an FCC rule and applies to all CB operators.
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6. Microphone socket (6 poles)
7. 9/19: Emergency channel selection.
8. LO/DX: RF Gain. Improves reception in strong signal areas.
9. 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 o. ANL reduces external noise and NB reduces
interference from vehicle ignition systems.
11. HI/LO: Adjusts microphone sensitivity (Mic gain).
12. DIM/BRT: Changes LCD backlight intensity between Day and
Night modes.
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13. Antenna: Connects antenna to the unit.
14. PA SP: Connects optional external 8-ohm, 4-watt speaker for use
as a public address system.
To prevent acoustic feedback, separate the microphone from the speaker when
operating the PA at high output levels.
15. EXT. SP: Connects an 8-ohm 4-watt speaker to remotely monitor
the receiver.
When the external speaker is plugged in, the internal speaker is o.
16. POWER: Connects DC power to transceiver.
17. Fuse
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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 page 7).
4. Attach the microphone bracket to 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, Uniden strongly recommends 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, but its
efficiency is less than that of a full quarter-wave whip antenna.
Connecting the Power Cords
Uniden recommends 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.
As an alternative, the power cord may be connected to an available
terminal on the fuse block or to a point in the wiring harness. However,
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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. Then connect the
black power cord to the vehicle chassis or negative (-) battery terminal.
INSTALL 6PIN TO 4PIN ADAPTER
The Bearcat 680 is pre-configured for Uniden’s new 6-pin wireless, noisecancelling technology, available in 2012. Your Bearcat 680 comes with an
adapter to connect the radio’s 6-pin microphone to a current standard
4-pin microphone.
1. Insert the 6-pin side of the adapter into the Bearcat 880 6-pin
microphone connection.
2. Plug a standard 4-pin microphone connector into the 4-pin side
of the adapter.
MARINE INSTALLATION
Consult your dealer for information regarding marine istallation. It is
important to adequately ground the system and to prevent electrolysis
between the fittings in the hull and the water.
USING YOUR BEARCAT 680
S/RF METER
You can check your incoming and outgoing signal strength as you use
your Bearcat 680. The 12-column LCD display (refer to item number
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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.
1. Turn unit ON. Set VOLUME to a comfortable level.
2. Select CHANNEL.
3. Set noise limitations as desired (ANL/NB).
4. Adjust squelch.
Turn SQUELCH fully clockwise so only strong signals can get
through.
Turn SQUELCH fully counterclockwise until you hear a hiss. Every-
thing gets through - noise, weak signals, and strong signals.
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.
5. Press LO/DX button to set the RF gain sensitivity to Local or
Distance.
6. Press HI/LO to adjust the microphone sensitivity (mic gain)
between LO and HIGH.
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. Press HI/LO to adjust the microphone sensitivity (mic gain) be-
tween LO and HIGH.
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3. When the channel is clear, press
the PTT button and speak. Release the
button when you have nished 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. 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 Bearcat 680 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 specied for your Bearcat 680.
Failure to do so may void your warranty.
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TROUBLESHOOTING
In the event of system malfunction, perform the following
procedures:
Problem Suggestion
Unit does not power up • Check power cord connections.
• Check fuse.
• Check vehicle electrical system.
No reception • Check microphone connection.
• Set CB/PA to CB.
• Check VOLUME and SQUELCH.
• Check antenna.
• Check antenna connection.
• Set LO/DX to DX.
Poor Reception • Check VOLUME and SQUELCH.
• Be sure antenna SWR is normal.
• Set LO/DX to DX.
No Transmission • Set CB/PA switch to CB.
• Check microphone connection.
• Set HI/LO to HI.
Low Transmission • Set HI/LO to HI.
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.
When ordering parts, be sure to specify the correct model number and serial
number of the unit.
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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: 2.2 Pounds
TRANSMITTER
Output Power: 4 watts
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% Dist.): 4 watts
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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
Specications shown are typical and subject to change without notice.
TWOYEAR 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 eect 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) modied, altered, or used
as part of any conversion kits, subassemblies, or any congurations
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 eect,
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 war-
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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. 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 specic 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 Service
743 Henrietta Creek Rd.
Roanoke, TX 76262
(800) 297-1023, 8 a.m. to 5 p.m., Central, Monday through Friday
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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 10-34 Trouble at this station
10-2 Receiving well 10-35 Condential information
10-3 Stop transmitting 10-36 Correct time is
10-4 OK, message received 10-37 Wrecker needed at
10-5 Relay message 10-38 Ambulance needed at
10-6 Busy, stand by 10-39 Your message is delivered
10-7 Out of service, leaving air 10-41 Please turn to channel
10-8 In service, subject to call 10-42 Trac accident at
10-9 Repeat message 10-43 Trac tie up at
Transmission completed, standing by
10-10
10-11 Talking too rapidly 10-45 All units within range please report
10-12 Visitors present 10-50 Break channel
10-13 Advise Weather/ Road conditions 10-60 What is next message number
10-16 Make pickup at 10-62 Unable to copy, use phone
10-17 Urgent business 10-63 Net directed to
10-18 Anything for us? 10-64 Net clear
10-19 Nothing for you, return to base 10-65 Awaiting your next message/
10-20 My location is 10-67 All units comply
10-21 Call by telephone 10-70 Fire at
10-22 Report in person to 10-71 Proceed with transmission in sequence
10-23 Stand by 10-77 Negative contact
10-24 Completed last assignment 10-81 Reserve hotel room for
10-25 Can you contact 10-82 Reserve room for
10-26 Disregard last information 10-84 My telephone number is
10-27 I am moving to channel 10-85 My address is
10-28 Identify your station 10-91 Talk closer to microphone
10-29 Time is up for contact 10-93 Check my frequency on this channel
10-30 Does not conform to FCC rules 10-94 Please give me a long count
10-32 I will give you a radio check 10-99 Mission completed, all units secure
10-33 EMERGENCY TRAFFIC 10-200 Police needed at
10-44 I have a message for you
assignment
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