TRC-55  (210-0151)               Operation             Faxback Doc. # 16735

DIGITAL CLOCK/TIMER

The Digital Clock/Timer is a very useful feature.  It functions just like
on a "clock radio" -- tells the time, plus can turn on the Transceiver at
a pre-set time and/or give an alarm signal.

NOTE:  The Clock functions only when operating from 120 volts, 60 Hz AC
       power.  It does NOT function when operating from 12 volts DC.

To use the Clock:

1.  Connect power (120 Volts AC).

2.  Set clock to correct time by pressing TIME SET in and turning.  Release
    TIME SET.

3.  Set Alarm Time (automatic "on" time) by rotating TIME SET to the
    desired time.

4.  Set OFF-ON-AUTO-ALARM switch to the ON position.  The Transceiver will
    operate normally.

NOTE:  When connected to AC power, for normal operation, you must set OFF-
       ON-AUTO-ALARM to the ON position, or the Transceiver will remain
       "dead."  In the OFF position the entire Transceiver is disabled
       (when operating from AC power).

5.  If you want the Receiver to come on at a pre-set time, adjust VOLUME,
    SQUELCH and Channel Selector to the desired positions.  Set Alarm Time
    as noted in 3 above and set OFF-ON-AUTO-ALARM to AUTO position.  At the
    pre-set time, the Receiver will be turned on automatically.

6.  If you want the Receiver to come on at a pre-set time and also have the
    Alarm sound, follow step 5 above, but use ALARM setting position
    instead of AUTO.

NOTE:  The Clock operates on a 12-hour cycle.  Thus, if you set the Alarm,
       it will turn on the TRC-55 two times during a 24-hour period.

USING THE TRANSCEIVER

Do not operate the Transceiver until all installation and connection
procedures have been completed.  See INSTALLATION and CONNECTIONS.  Do not
operate the transmitter without an antenna or suitable dummy load
connected.  Do not operate the Public Address Amplifier function without a
speaker or load connected to the PA SPEAKER jack.

RECEIVER OPERATION

1.  Leave PA button in the "off" position (button out).

2.  Plug the microphone into MICROPHONE jack.

3.  Turn the Transceiver on by rotating VOLUME clockwise from the OFF
    position.

NOTE:  If you're operating from AC power, the Clock switch must be in the
       ON position for power to be applied to the Transceiver circuitry.

4.  Set Channel Selector to the desired channel of operation.

5.  Adjust VOLUME as desired.

6.  Adjust SQUELCH to cut out the annoying background noise when no signal
    is being received.  When properly set, SQUELCH will keep the receiver
    "dead" (no background noise) until a signal comes in on that channel.
    Do not set SQUELCH too high, or weak signals will not be able to open
    the SQUELCH circuit.  To receive weak signals, it is best to leave
    SQUELCH at the maximum counter-clockwise position.

7.  Use the FINE TUNING to tune in slightly off-frequency stations or to
    tune out adjacent channel interference caused by a station on the next
    channel being too close to the channel.  Use the position which
    provides the greatest reading on the S-Meter.

8.  For most distinct reception, plug communications-type headphones (such
    as Radio Shack Catalog Number 279-200) into the PHONES jack.  This will
    be particularly helpful when operating in high noise surroundings
    (factory, construction site, etc.).

If you wish to use an external speaker for reception, connect it to the
EXT SPEAKER jack on the back of the unit.  This automatically disconnects
the built-in speaker.

If the reception is disturbed by interference from impulse-type noise
(ignition noise and other man-made electrical noise), push in NB button.
The Noise Blanker circuitry is most effective with impulse noise. 
Interference from hash-type noise (fluorescent lights and other types of
constant broad-frequency type noise) can be reduced with the Automatic
Noise Limiter circuit; press ANL button in.

TRANSMITTER OPERATION

1.  Be sure PA button is out.

2.  Plug the Microphone into the MICROPHONE jack.

3.  Select the desired channel of operation.

4.  Press the push-to-talk button on the side of the Microphone and speak
    in a normal voice into the Microphone.  Best results will be obtained
    when you hold the mic 1 to 4" from your mouth and turned at about a 45
    degree angle (not straight on).

5.  When transmitting, the ON THE AIR light will be "on" and the MODULATION
    light will flash with modulation (as you speak).  The RF-S Meter will
    indicate the relative level of output power.

6.  To receive, release the push-to-talk button.

    The SWR Meter can be used to provide an SWR (standing wave ratio)
    reading of the entire antenna system.  Basically SWR is an indication
    of the efficiency of the antenna system.  The lower the reading, the
    better the efficiency.  An inefficient system will give high SWR
    readings.

    To use the SWR function, push in CAL button.  Press the mic button for
    a few seconds and adjust the SWR CAL control to provide a meter reading
    at the CAL mark.  Press CAL again (to release this function) and with
    the mic button still pressed in, read SWR on SWR Meter.  Any reading
    under 2 is very good.  Readings between 2 to 5 are acceptable.  If you
    get a reading of 5 or more, you should carefully evaluate the entire
    antenna system.  Is the antenna mounted correctly?  Are you using the
    correct coaxial cable?  Try exact multiples of 1/2-wave-length for the
    coaxial cable (14 feet for foam insulation type) -- this can help in
    providing a better match between antenna and the Transceiver.

USING THE PUBLIC ADDRESS AMPLIFIER FEATURE

You can use the Transceiver to provide 4 watts of audio power as a Public
Address amplifier.  To use this function, you must connect an 8 ohm public
address type speaker to the PA SPEAKER jack on the rear of this unit.

1.  Be sure an 8 ohm speaker is connected to the PA SPEAKER jack.

2.  Push in PA button.

3.  Turn the Transceiver "on" with the VOLUME control.

4.  Connect the microphone and press the push-to-talk button and talk into
    the mic.  Adjust PA GAIN as required for the appropriate level of
    sound.

5.  Even though you have the Transceiver set for PA operation, you can
    still monitor CB signals -- they will be heard through the PA speaker.
    This way you won't miss any important calls, even while using PA.  To
    defeat the receiver sound, set SQUELCH to maximum, or set the Channel
    Selector to the blank position between channels 22 and 23.

6.  To return to normal Transceiver operation, press PA button to release
    it.

NOTE:  If you do not have a PA type speaker connected to the PA SPEAKER
       jack, sound will come through the TRC-55's built-in speaker.  This
       will result in feedback and squealing.  Of course, if you have a
       speaker connected to the EXT SPEAKER jack, the PA sound will come
       from it.


(br-7/5/95)