TRC-55  (210-0151)        Controls and Functions       Faxback Doc. # 16734

This brief description of each control will help you become acquainted with
the Transceiver and aid you in the proper operation of it.

MICROPHONE Jack                      - plug the dynamic mic into this jack.
                                       The push-to-talk button on the side
                                       of the mic is for activating the
                                       Transmitter.

PHONES Jack                          - plug headphones into this jack for
                                       most efficient receiver listening.
                                       Phones are especially useful when
                                       operating in areas of high noise
                                       (construction sites, factories,
                                       etc.).

P.A. GAIN Control                    - is used to adjust the level of sound
                                       when using the unit as a Public
                                       Address amplifier.

SWR CAL Control                      - is used when setting up the
                                       calibration point for the SWR Meter
                                       operation.  With an antenna
                                       connected, the transmitter is keyed
                                       and with CAL button pressed in,
                                       adjust this control for a meter
                                       reading to the red CAL mark.  This
                                       sets the reference for the SWR
                                       circuit; press CAL again and you
                                       will read SWR on the SWR Meter.

RF GAIN Control                      - effectively controls the sensitivity
                                       of the RF Amplification stages of
                                       the Receiver.  It's particularly
                                       useful when receiving strong local
                                       signals which might tend to over-
                                       load the receiver.

FINE TUNING Switch                   - use to tune in slightly off-
                                       frequency stations.  Set it to the
                                       position which provides the highest
                                       S-meter reading.  It also is helpful
                                       to minimize adjacent channel
                                       interference.

SQUELCH Control                      - use this control to cut out annoying
                                       background noise when no signal is
                                       being received; but when properly
                                       set it will permit signals to come
                                       through.

VOLUME On/OFF Control                - Use this control to turn the power
                                       on and off, and to adjust the level
                                       of the sound from the speaker.

Channel Selector                     - Use this control to select any one
                                       of the 23 channels available.

Transmit Lights                      - when Transmitting, the ON THE AIR
                                       light will be on.  When you speak
                                       into the microphone, MODULATION will
                                       flash.

CAL Button                           - press in when using SWR CAL control
                                       to set reference for SWR
                                       measurement.  Press again to return
                                       to normal.

PA Button                            - press in and the entire unit will
                                       function as a 4-watt Public Address
                                       Amplifier.  When the PA button is
                                       "in," the Transmitter will not
                                       function -- the Microphone button
                                       turns on the Public Address
                                       Function.  For PA operation, you
                                       must have a PA speaker connected to
                                       the PA SPEAKER jack on the back. 
                                       Press again to return to normal
                                       operation.

ANL Button (Automatic Noise Limiter) - press in to cut out annoying hash-
                                       type noise.  Press again to release
                                       this function.

NB Button (Noise Blanker)            - press in to cut out annoying
                                       impulse-type noise (such as ignition
                                       noise).  Press again to release this
                                       function.

RF-S and SWR Meters                  - give visual indication of signal
                                       strengths.  When receiving, the RF-S
                                       Meter shows the strength of incoming
                                       signals -- in S units.  When you
                                       transmit, RF-S shows the relative
                                       output power from the Transmitter
                                       and SWR (when used together with CAL
                                       button and SWR CAL control) will
                                       show the Standing Wave ratio of the
                                       antenna system.

Jacks on the Rear Panel

ANTENNA Connector                    - accepts PL-259 coaxial connector
                                       from the antenna system.

EXT. SPEAKER jack                    - connect an external 8-ohm speaker to
                                       this jack (automatically disconnects
                                       the built-in speaker).

PA SPEAKER jack                      - connect an 8-ohm Public Address
                                       speaker to this jack when using the
                                       unit as a Public Address amplifier.

POWER connectors                     - plug power cables into these
                                       receptacles.  The connector at the
                                       right is for 120 volts AC; the one
                                       at the left is for 12 volts DC.  If
                                       you plug in both connectors, DC will
                                       be functional, AC will not.  For AC
                                       operation use AC power cable only.


(br/all-08/29/95)