BTX-124 VHF FM Business Band Transceiver 190-1205 Operation

BTX-124 VHF FM Business Band Transceiver
(190-1205)                 Operation                  Faxback Doc. # 38413


1.   Turn VOL clockwise to turn on the transceiver.

2.   Select Channel A or B using the CHANNEL switch on the top of the
     transceiver.

3.   To conserve battery power, set POWER to LO.  If the person you 
     transmit to has trouble receiving your signal, set POWER to HI.

4.   To transmit, hold down push-to-talk, then hold your transceiver about
     3 inches from your mouth and speak slowly in a normal tone of voice.
     The BUSY-TX/LO BATT indicator lights red.

5.   When you finish your message, release push-to-talk.  The BUSY-TX/LO
     BATT indicator lights green when you receive a transmission.

6.   If you are not using CTCSS, wait until there is no signal on the 
     channel, then slowly turn SQL/CTCSS clockwise until the background
     noise stops.

     Note:  Do not turn SQL/CTCSS too far clockwise because you might cut
            out weak signals.

If you are using CTCSS (see "Why Use CTCSS?") turn SQL/CTCSS 
counterclockwise until it clicks.

8.   To turn off the transceiver, turn VOL counterclockwise.

WHY USE CTCSS?

CTCSS (Continuous Tone-Coded Squelch System) helps eliminate interference
between different users of the same frequency.  When CTCSS is turned on,
the transceiver transmits a selected tone with your transmission.  This
tone is too low for you to hear, but other transceivers can detect it.  If
CTCSS is turned on and set to the same tone on the receiving transceiver,
it only receives those transmissions that include the tone.

If two different groups operate transceivers in the same area on the same
frequency, they do not hear each other's broadcasts if they both use CTCSS
and each select a different CTCSS tone.

There are 38 different CTCSS tones available.  The CTCSS tone default for
this unit is 100 Hz.  See "Specifications," Faxback Doc. # 38415 for a
complete list.  Only authorized RadioShack Service Centers can change the
CTCSS tone.

OPERATIONAL HINTS

Your transceiver's range varies depending on factors such as position,
terrain, and battery condition.  Buildings absorb transmitted signals and,
if they contain metal, might completely block the signals.  Trees and
heavy cloud formations have a similar effect, though not as severe.  If you
are near a lake or the ocean, you might get excellent range.

To ensure maximum range, operate the transceiver with the battery pack 
fully charged.  As the voltage decreases, the range decreases.

(km-03/17/1997)