TRC-459 AM SSB CB Transceiver
(210-1582)                 Installation               Faxback Doc. # 46732

CAUTION:  Don't operate your Transceiver without an Antenna or Dummy load
          connected to the Antenna jack.

For Base Installation

1.  Choose a good location for the unit: avoid excessive heat, humidity
    and direct sunshine; also ensure reasonable ventilation.

2.  Connect the Antenna to the ANTENNA jack.  Make sure the antenna cable
    has no sharp angle, breaks or cracks and do not bend it around sharp
    corners or pinch it in a window or door.

3.  Connect the AC power cable to a source of 120 volts, 60 Hz AC power.

For Mobile Installation

Operation in a vehicle is also feasible.  Supply DC power as follows.

1.  For Negative Ground Electrical systems; Connect the Red wire (with in
    line fuse holder) to an Accessory terminal on the ignition switch or
    fuse block.  Connect the black wire to ground (frame of vehicle).

2.  For Positive Ground Electrical Systems; Connect the Black wire to the
    accessory switch "hot" terminal and connect the Red wire to a ground
    (Frame).  Be sure BLACK goes to negative (-) and RED goes to positive
    (+).

Location of the unit is important in Mobile installations.  Be sure it
won't interfere with the normal operation of the vehicle and that
passengers will have adequate leg room.  Since the unit is quite heavy, we
recommend that you mount it on the floor or over the drive shaft hump.

Provision is made for connecting an external/remote speaker and/or a PA
type speaker.  RadioShack sells some fine speakers for both purposes.  For
external/remote use, try RadioShack's 21-549.  For PA use, our 40-1244 is
specifically designed for Public Address application.

Antenna System

The antenna system, including the transmission line, is an integral part
of the transceiver.

The vertical ground plane antenna is the most popular fixed station
antenna.  It is omni-directional and good for contacting other base and
mobile stations.  We suggest RadioShack's 21-901 for medium to long range
communications.

The colinear antenna is a high-efficient omni-directional type and is good
for medium to long range.  21-902, 21-1133 or 21-964 are all available at
RadioShack.

A directional beam antenna has high gain as well as sharp directivity. The
directivity, however, can be a disadvantage from time to time unless you
use a rotor.  Since the beam antenna is directional, it greatly reduces
noise and interference from all other directions.  For long range
communication we recommend RadioShack's 3 Element Beam, 21-933.  It has a
decided advantage on the CB band where man-made noise is a problem.

The antenna system should be adequately grounded and always use a static
discharger (lightning arrestor) to prevent damage by conducting lightning
to ground.

Be sure to use the right transmission line.  It must be the coaxial type
which has an impedance equal to the antenna impedance.  Generally, the
shorter the transmission line, the better.  Transmission line losses
increase with frequency.  Foam insulation coaxial cable is usually the
best.  We recommend type RG-58/U for shorter lengths and RG-8/U for longer
lengths.

The above is true for reception as well.  If a mismatch exists between the
antenna and the receiver, the excellent sensitivity and signal-to-noise
ratio of this unit will be reduced.

Your RadioShack store carries a complete line of base station CB antennas
and accessories.

(BR/eb 3/26/98)