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.
2
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
3
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. 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
3
6
7
8
9 10 11
4
12
5
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.
4
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.
13
15
14
16
17
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
5