TRC-495 40-Channel CB Base Station Tranceiver
(210-1579)                 Installation               Faxback Doc. # 15890

SELECTING A LOCATION

Choose a location for your CB that is near a standard AC power outlet and
your antenna installation and away from sources of electrical noise.

CONNECTING AN ANTENNA

An antenna is an important part of your CB installation.  Choose and
install the antenna with care.

Consider the following when you install the antenna:

    Mount the antenna as far as possible from sources of electrical noise
    (power lines, transformers, ignition systems, electrical motors, and
    so on) and keep the antenna's cable away from these noise source.

    Provide a good ground for the antenna with UL-listed components.

    Be sure the antenna cable's shield is securely connected.

    Mount the antenna as high as possible without exceeding 60 feet above
    the ground or 20 feet higher than the highest point on a building.

    For the best performance, the antenna must be tuned (see the
    instructions provided with the antenna) and positioned vertically.

Select an antenna with a PL-259 connector.  This type of antenna works
most efficiently as a base station antenna.  For example, a 1/2-wave
base station antenna (Radio Shack Cat. No. 21-967) is a high-efficiency
antenna that has omni-directional characteristics.  You can use this type 
of antenna for medium and longrange communications.

Use a coaxial cable with an impedance of 50 ohms to connect the antenna
to your CB.  We suggest you use RG-58/U for lengths under 10 feet, or
RG-8/U for longer lengths, and keep the length of the antenna cable to
a minimum.

Once you select the antenna, mount it following the instructions supplied
with it.  Then route the cable to the CB and connect the cable to the ANT
connector on the back of the CB.

WARNING:  When installing or removing a base station CB antenna, use
          extreme caution.  If the antenna starts to fall, let it go!
          It could contact overhead power lines, contact with the antenna,
          mast, cable, or guy wires can cause electrocution and death.
          Call the power company to remove the antenna.  DO NOT attempt
          to do so yourself.

CONNECTING THE MICROPHONE

Mount the supplied microphone clip on the left side of the CB,
horizontally or vertically, using the two supplied screws.  Then slide
the microphone onto the microphone holder.

Connect the microphone cable to the MIC jack on the front panel.  Press
the tab on the top of the microphone plug and match the notch in the plug
with the top notch in the jack.  Then insert the plug into the jack.

To remove the microphone cable, press the tab and pull the plug out of the
jack.  Never pull on the microphone cable.

CONNECTING POWER

You can power your CB from either standard 120-volt AC or from a 12-volt
DC source, such as a storage battery.

Using Standard 120-Volt AC Power

When you use a standard 120-volt AC power source, set the power select
switch on the back of the back of the CB to 120V AC.

Then plug the CB's AC power cord into a standard AC outlet.

NOTE:  The plug is polarized (one blade is bigger than the other) so it
       only fits one way.  If it will not fit, turn it over and try
       again.  Do not force it.

Using 12-Volt DC Power

If you want to use your CB where 120-volt AC power is not available (for
example, when AC power fails or at a remote location), you can power.
your CB from 12-volt DC power.  Use the supplied DC power lead (with inline
fuse).

Follow these steps to connect the CB to 12-volt DC power.

1.  Connect the plug end of the DC power leads to the 13.8V DC power
    jack on the back of the CB.

2.  Set the power select switch on the back of the CB to 13.8V DC.

3.  Connect the red and black power leads to the DC power source as
    follows:

    Connect the red lead (with inline fuse holder and fuse) to the
    source's (+) terminal.

    Connect the black lead to the source's negative (-) terminal.

CONNECTING HEADPHONES

To reduce distractions or help you hear signals, you can use your CB
with monaural headphones that have a 1/4-inch plug and an impedance
of 4, 8, 16, or 100 ohms.  Plug the headphones' plug into the PHONES
jack on the front of your CB.

NOTE:  Plugging in headphones silences both the internal and external
       speakers.


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