Radio Shack BTX-123 User Manual

11

Use a Phillips screwdriver to attach
the belt clip to the back of the trans-
ceiver with the two supplied screws
and washers. Then slide the belt clip
over your belt or waistband.

Using an External SPEAKER/
Microphone

To connect an external speaker/mi-
crophone (such as Cat. No. 19-312
or 19-314) to the transceiver, pull up
the attached plug then plug the
speaker/microphone’s 

3

/32-inch

plug into the transceiver’s MIC jack
and its 

1

/8-inch plug into the trans-

ceiver’s EAR jack. This disconnects
the transceiver’s speaker.

CHANGING OR ADDING Crystals

Your transceiver comes with a pair of
crystals installed in Channel A for
operation on 154.600 MHz. You can
order crystals from your local Ra-
dioShack store for Channel B or as
replacements for Channel A. Be
sure to specify the transceiver’s cat-
alog number — 19-1204.

Important: Channel A crystals are
soldered in, and can only be re-
placed by a qualified technician.

You must request a frequency as-
signment from the PCIA before or-
dering crystals. Call the PCIA at 800-
759-0300, extension 3068 (in VA,
call 703-739-0300, extension 3068).
They will advise you of the required
information as well as the current
fees. Then send your FCC Form 600
to the PCIA. They will assign a fre-
quency and forward the application
to the FCC.

Your transceiver can operate from
152.255 to 156.250 MHz on any of
the business radio frequencies au-
thorized by the FCC. To determine
the crystals you need to order, use
the formulas under “Ordering Crys-
tals” on Page 13. You can order the
crystals through your local Ra-
dioShack store.