BXT-123 Business Band Transceiver
(190-1204) Preparation Faxback Doc. # 40868
POWERING THE TRANSCEIVER
You power your transceiver using the supplied rechargeable battery pack.
You must charge the battery pack before you use it.
Installing/Removing the Battery Pack
To install the battery pack, slide it onto the transceiver.
Caution: The battery pack fits onto the transceiver only one way. Do not
force it.
To remove the battery pack, slide and hold up RELEASE on the side of the
transceiver in the direction of the arrow and slide the pack off.
Charging the Battery Pack
You must charge the battery pack using the supplied AC adapter. It takes
about 14-16 hours to recharge a battery pack that is fully discharged. You
can charge the battery pack while it is installed or removed.
Cautions:
Do not use the transceiver while you are charging the battery pack. This
might damage the transceiver, the AC adapter, or the battery pack.
The supplied adapter supplies 12 volts and delivers at least 100 milliamps.
Its center tip is set to positive, and its barrel plug correctly fits the
battery pack's CHRG jack. Using an adapter that does not meet these
specifications could damage the transceiver or the adapter.
Never use any other charger to recharge the battery pack. This could
permanently damage your transceiver or the battery pack.
When you finish using the AC adapter, disconnect it from the AC outlet
first. Then disconnect it from the transceiver.
Follow these steps to charge the battery pack.
1. If the battery pack is attached to the transceiver and the transceiver
is on, turn it off.
2. Plug the adapter's barrel plug into the CHRG jack on the side of the
battery pack. Then plug the adapter's power module into a standard
AC outlet.
Warning: Do not use an AC adapter's polarized plug with an extension
cord, receptacle, or other outlet unless the blades can be
fully inserted to prevent blade exposure.
Note: A rechargeable battery pack lasts longer and delivers more power if
you let if fully discharge once a month. To do this, simply use the
transceiver until the BUSY/TX/BATT indicator on the front of the
transceiver lights yellow when you press PUSH TO TALK. Then fully
charge the battery pack.
Important! At the end of a rechargeable battery pack's useful life, it
must be recycled or disposed of properly. Contact your local,
county, or state hazardous waste management authorities for
information on recycling for disposal programs in your area.
Some options that might be available are: municipal curb-side
collection, drop-off boxes at retailers such as your local
RadioShack store, recycling collection centers, and mailback
programs.
CONNECTING THE ANTENNA
Caution: To prevent damage to your transceiver, you must connect an antenna
before you operate it.
Follow these steps to attach the supplied flexible antenna to your
transceiver.
1. Align the slots around the antenna's connector with the tabs on the
antenna jack on top of the transceiver.
2. Press the antenna down over the jack and turn the antenna's base
clockwise until it locks into place.
To remove the antenna, turn the antenna's base counterclockwise until it
unlocks, then lift it off the antenna jack.
Connecting an Optional Antenna
The transceiver's antenna jack makes it easy to use the transceiver with a
variety of antennas. Instead of the supplied antenna, you can attach a
different one, such as an external mobile antenna or outdoor base station
antenna. Your local RadioShack store sells a variety of antennas.
Always use 50-ohm coaxial cable, such as RF-58 or RG-8, to connect an
outdoor antenna. For lengths over 50 feet, use RG-8 low-loss dielectric
coaxial cable. If your antenna's cable does not have a BNC connector, you
will also need a BNC adapter (available at your local RadioShack store).
Follow the installation instructions supplied with the antenna, route the
antenna cable to the transceiver, then connect it to the antenna jack.
Warning: Use extreme caution when installing or removing an outdoor
antenna. If the antenna starts to fall, let it go! It could
contact overhead power lines. If the antenna touches a power
line, contact with the antenna, mast, cable or guy wires can
cause electrocution or death. Call the power company to remove
the antenna. Do not attempt to do so yourself.
CONNECTING AN EARPHONE OR HEADPHONES
For private listening, pull up the attached plug then connect an optional
earphone or mono headphones with a 1/8-inch plug (available at your local
RadioShack store) to the EAR jack on top of your transceiver. This
disconnects the internal speaker.
Listening Safely
To protect your hearing, follow these guidelines when you use an earphone
or headphones:
Do not listen at extremely high volume levels. Extended high-volume
listening can lead to permanent hearing loss.
Set the volume to the lowest setting before you begin listening. After
you begin listening, adjust the volume to a comfortable level.
Once you set the volume, do not increase it. Over time, your ears adapt
to the volume level, so a volume level that does not cause discomfort
might still damage your hearing.
Traffic Safety
Do not use an earphone or headphones with your transceiver when operating
a motor vehicle or riding a bicycle in or near traffic. Doing so can
create a traffic hazard and could be illegal in some areas.
If you use an earphone or headphones with your transceiver while riding a
bicycle, be very careful. Do not listen to a continuous broadcast. Even
though some earphones/headphones let you hear some outside sounds when
listening at normal volume levels, they still can present a traffic hazard.
CONNECTING AN EXTENSION SPEAKER
In a noisy area, an extension speaker or an amplified speaker might provide
more comfortable listening. You can find a selection of speakers at your
local RadioShack store.
Pull up the attached plug then plug the speaker cable's 1/8-inch plug into
your transceiver's EAR jack. This disconnects the internal speaker.
USING THE BELT CLIP
You can attach the supplied belt clip to the transceiver for hands-free
carrying when you are on the go.
Use a Phillips screwdriver to attach the belt clip to the back of the
transceiver 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/microphone (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 transceiver's EAR jack. This disconnects the transceiver's
speaker.
CHANGING OR ADDING CRYSTAL
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 RadioShack
store for Channel B or as replacements for Channel A. Be sure to specify
the transceiver's catalog number - 19-1204.
Important: Channel A crystals are soldered in, and can only be replaced by
a qualified technician.
You must request a frequency assignment from the PCIA before ordering
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 frequency 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 authorized by the FCC. To determine the
crystals you need to order, use the formulas under "Ordering Crystals."
You can order the crystals through your local RadioShack store.
Follow these steps to install crystals.
1. Remove the battery pack and the antenna.
2. Use a Phillips screwdriver to remove two of the screws on the battery
guide plate. Then loosen the other two screws on the battery guide
plate about 4 full turns. (This makes it easier to reinstall the back
cover later).
Note: You do not need to loosen or remove the battery contact plate's
two screws.
3. Pull up the rubber plug covering the MIC and EAR jacks to expose both
jacks.
Caution: PUSH TO TALK on the side of the transceiver is under spring
tension, and it might come loose when you remove the back
cover in the next step. To avoid losing PUSH TO TALK and its
spring, place your hand over PUSH TO TALK while removing the
back cover.
4. Use a Phillips screwdriver to remove all four screws from the
transceiver's back cover. Then, while holding PUSH TO TALK with one
hand, carefully remove the back cover.
5. Install or replace the new crystals in the sockets. Be sure to install
the receive and transmit crystals in the correct sockets.
6. Replace the back cover and secure it with the four screws.
7. Replace the two screws you removed from the battery guide plate, then
tighten all the screws.
8. Replace the battery pack and the antenna.
Ordering Crystals
To determine the crystals you need, use the following formulas:
Transmit Crystal: Receive Crystal:
Operating Frequency Operating Frequency - 10.7 (MHz)
___________________ ________________________________
8 4
For example, to transmit and receive on 151.455 MHz, specify a transmit
crystal of 18.931875 (151.455 MHz/8) and a receive crystal of 35.18875 MHz
[(151.455 - 10.7)/4].
We recommend you only order crystals for this transceiver through your local
RadioShack store. If you do purchase them from another source, the
following information might be helpful:
Case Type: HC-50T
Load Capacitance: 20 pF
(km-07/31/1997)
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