TRC-485  40-Channel AM/SSB CB Transceiver
(210-1577)                 Operation                  Faxback Doc. # 33139

Before you use your CB, you should know how to use it effectively and
courteously.  "Operational Hints", on Faxback Doc. # 33140, contains
information that will help you get more enjoyment from your CB.

RECEIVING TRANSMISSIONS AND ADJUSTING SQUELCH

1.  Turn SQUELCH clockwise until it clicks.

2.  Turn RF-GAIN fully clockwise.

3.  Turn on the transceiver by turning VOLUME clockwise. The display lights
    and the frequency and channel appear.  A bar graph also appears which
    shows the received signal strength.

4.  Press MODE to select the mode of operation - AM, LSB (Lower Side Band),
    or USB (Upper Side Band). (See "Notes on SSB Reception", below).

5.  Rotate CHANNEL to select a channel.

6.  To cut out background noise between transmissions, wait until there is
    no signal, then slowly turn SQUELCH clockwise until the background
    noise stops.

    NOTE:  To receive very weak signals, turn SQUELCH counterclockwise.
           You hear noise between transmissions, but you also hear weak
           transmissions (those not strong enough to break through a higher
           squelch setting).

7.  Adjust VOLUME to a comfortable listening level.

8.  To turn off the CB, turn VOLUME counterclockwise until you hear it
    click.

TRANSMITTING

NOTE:  We recommend you try receiving before you transmit.

1.  Follow Steps 1-7 in "Receiving Transmissions and Adjusting Squelch",
    above.

2.  To transmit, press the Talk button on the microphone.  Hold the
    microhone 2-3 inches from your mouth and speak in a normal tone of
    voice.  TX appears on the display along with a bar graph which shows
    the relative strength of your transmission.

3.  When you finish transmitting, release the Talk button.  TX and the
    signal strength bars clear from the display.

4.  To turn off the CB, turn VOLUME counterclockwise until, you hear it
    click.

USING SPECIAL CONTROLS

Scanning Incoming Signals

To scan incoming signals, press SCAN.  SCAN appears on the display, and the
transceiver stops for 5 seconds on each channel.

To stop automatic scanning, press SCAN again.  SCAN disappears from the
display.

Monitoring Channel 9

For emergency call monitoring on Channel 9, just press CH9.  09 flashes on
the display, and the transceiver stays on channel 9.

To release emergency call monitoring, press CH9.  The previously selected
channel number appears on the display.

Notes on SSB Reception

When you first listen to an SSB signal, you probably will not be able to
understand it.  The voice might sound distorted or low and guttural.  In
either case, slowly turn CLARIFIER to bring the signal into its natural
voice tonal range.

As SSB signal produces a fluttering, unintelligible sound when received in
the AM mode.  Set the mode switch to either LSB or USB, and adjust
CLARIFIER.

If the voice is still not intelligible, it might be an SSB signal operating
on the other sideband - try the other SSB mode.

You can tune AM signals when the mode switch is in the USB or LSB position.
Adjust CLARIFIER to eliminate the steady tone caused by the AM carrier
signal.

Alternating Between Two Channels

To alternate between two channels, select one channel and press DW (dual
watch).  DW appears on the display.  Then rotate CHANNEL to select the
other channel.

The transceiver alternates between the first selected channel (the dual
watch channel) and the currently selected channel.  Whenever the
transceiver detects a transmission on the first channel, it switches back
to that channel.  After 5 seconds, the transceiver returns to the second
channel (even if the transmission is not complete).

To turn off dual watch, press DW.  DW disappears from the display.

Using Last Channel Recall

Press LCR to return to the last channel that was used for longer than 3
seconds or was transmitted on.

Using CLARIFIER

When you listen to an SSB signal, turn CLARIFIER to tune in slightly off
frequency stations or to tune out adjacent channel interference.

Using RF-GAIN

When you receive an extremely strong signal, adjust RF-GAIN to vary the
overall volume, instead of using the VOLUME control.

Using NB

If your reception is disturbed by interference from impulse type noise
(ignition noise and other electrical noise), press NB to reduce or
eliminate the noise.

USING THE PA AMPLIFIER

Your CB has a built-in PA (public address) amplifier.  With an optional PA
speaker, you can turn your radio into a mobile address system.

Follow these steps to use the PA amplifier after you connect an external PA
speaker (see "Connecting a PA Speaker", on Faxback Doc. # 33137).

1.  Rotate SQUELCH counterclockwise to PA.  PA appears on the display.

2.  To transmit, press the Talk button on the microphone.  Hold the
    microphone 2-3 inches from your mouth and speak in a normal tone of
    voice.

3.  Turn VOLUME for the desired volume level.  If you hear a high-pitched
    squeal, adjust VOLUME until the squeal stops.


(LB/EB 5/16/96)