BTX-128 2-Channel 1-Watt UHF Business Band Transceiver w/CTCSS
(190-1207) Preparation Faxback Doc. # 63812
Installing the Battery Pack
The supplied Ni-MH battery pack, when fully charged, provides power to
your transceiver for up to 10 hours. You must install the battery pack
into your transceiver, then charge it.
CAUTION: Do not remove the plastic wrap from the battery pack. Doing so
can permanently damage the battery.
1. Slide LOCK on the battery compartment cover to the right to unlock it,
then slide the battery compartment cover in the direction of the
arrows and lift it off.
2. Plug the battery pack's connector into the connector inside the
battery compartment. Then place the battery pack in the compartment.
Note: The connector fits only one way. Do not force it.
3. Replace the battery compartment cover, then slide LOCK to the left to
lock the cover.
Charging the Battery Pack
Before you use the battery pack for the first time, you must use the
supplied battery charger to charge it for about 14 hours. You cannot use
the transceiver while you charge the battery pack.
To ensure maximum range, operate the transceiver with the battery pack
fully charged. As the voltage decreases, the range decreases.
CAUTION: The supplied 12V DC, 200 mA battery charger was designed
specifically for your transceiver. Use only the supplied battery
charger.
1. Turn VOLUME/OFF fully counterclockwise until it clicks to turn off the
transceiver.
2. Pull out the rubber cover on the DC 12V jack on the lower side of the
transceiver and insert the charger's barrel plug into the jack. The
plug the other end of the charger into a standard AC outlet.
If TX/BATT lights red and flashes green when the transceiver is on,
the transceiver has about 60 minutes of battery power remaining.
Recharge the battery pack.
3. Unplug the AC adapter from the AC outlet after the battery pack is
fully charged.
CAUTION: Although the battery pack is designed to be charged using the
supplied battery charger for up to a year, do not charge the
battery pack longer than 24 hours at a time.
Connecting the Antenna
1. Align the slots around the antenna's connector with the tabs on the
antenna jack on the top of the transceiver.
2. Press the antenna down over the jack and turn the antenna's base
clockwise until it locks into place.
3. To detach the antenna, turn the antenna's base counterclockwise. Then
lift off the antenna.
Connecting an Optional Antenna
Although the supplied rubber duck antenna provides excellent local
reception, you can connect an optional external mobile antenna or outdoor
base station antenna to your transceiver for better reception of weak
signals. The antenna jack on the top of the transceiver makes it easy to
use the transceiver with a variety of antennas. Your local RadioShack
store sells a variety of antennas.
Using the Belt clip
The supplied belt clip lets you easily attach the transceiver to your
belt.
Slide the belt clip onto the tab at the back of the transceiver until it
clicks. To remove the clip, pull up on its middle tab and slide it down.
Connecting an Earphone/External Speaker
To listen privately or to hear better in a large area such as a warehouse,
you can pull up the rubber cover on the EAR and MIC jacks, then plug a
monaural earphone or an external speaker with a 3.5 mm (1/8 inch) plug
(not supplied) into the EAR jack on the side of the transceiver.
This automatically disconnects the built-in speaker.
Listening Safely
To protect your hearing, follow these guidelines when you use an earphone.
Set the volume to the lowest setting before you begin listening. After
you begin listening, adjust the volume to a comfortable level.
Do not listen at extremely high volume levels. Extended high-volume
listening can lead to permanent hearing loss.
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 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 with your transceiver while riding a bicycle, be
very careful. Do not listen to a continuous broadcast. Even though some
earphones let you hear some outside sounds when listening at normal volume
levels, they still can present a traffic hazard.
Using an External Speaker/Microphone
An external speaker/microphone can make it easier to use the transceiver
when you clip it to your belt, so you do not have to lift the transceiver
to your mouth each time you transmit. Pull up the rubber cover from the
EAR and MIC jacks and plug the speaker/microphone's 2.5 mm (3/32 inch)
plug into the jacks. This automatically disconnects the transceiver's
built-in speaker and microphone.
Setting Frequency Options
Before you can use your transceiver, you must set your transceiver to a
UHF business band frequency you have a license to use. Then you can
select a preset quiet tone CTCSS (Continuous Tone Control Squelch System)
frequency and set your transceiver to use it.
1. Set your transceiver to a UHF business band frequency (see "Setting a
UHF Business Band Frequency" below).
2. Select a quiet tone frequency then set the DIP switches to that
frequency (see "Using a Quiet Tone Frequency" below).
You can select one quiet tone frequency at a time. If you do not want to
use a quiet tone frequency, skip Step 2.
Setting a UHF Business Band Frequency
There are eight UHF business band frequencies available in your
transceiver.
464.5000 MHz (Brown Dot)
464.5500 MHz (Yellow Dot)
467.7625 MHz (J Dot)
467.8125 MHz (K Dot)
467.8500 MHz (Silver Star)
467.8750 MHz (Gold Star)
467.9000 MHz (Red Star)
467.9250 MHz (Blue Star)
Channel A is preset to 464.550 MHz and Channel B is preset to 464.500 MHz.
You can set Channel A or B to any frequency listed above.
1. Turn VOLUME/OFF fully counterclockwise until it clicks to turn off the
transceiver.
2. Remove the battery compartment cover. Then lift up the plastic cover
marked QUIET.
Note: Be sure the battery pack is connected.
3. Hold down PTT and MON, then turn VOLUME/OFF clockwise to turn of the
transceiver. The transceiver beeps once.
4. Within 3 seconds, press MON once. The transceiver sounds a two-tone
sequence.
Note: If you do not press MON within 3 seconds in Step 4, the
transceiver sounds a single tone. If this happens, start over
from Step 1.
5. Rotate CHANNEL A/B to select the channel you want to set.
6. Choose a UHF dot frequency from the list above. Then use a pointed
object such as a straightened paper clip to set the position of each
DIP switch to 1 (up) or 0 (down) as indicated in the following table.
Channel Frequency DIP Switch Setting
Number (MHz) 0 = down/1 = up
1 464.5000 000001
2 464.5500 000010
3 467.7625 000011
4 467.8125 000100
5 467.8500 000101
6 467.8750 000110
7 467.9000 000111
8 467.9250 001000
7. Press MON once. If the DIP switch setting is correct, the transceiver
sounds a three-tone sequence. If the DIP switch setting is incorrect,
the transceiver beeps once.
8. Turn the transceiver off then on.
Note: If you do not turn off the transceiver to reset the power, the
original frequency setting remains unchanged.
If you want to set your transceiver to a UHF business band frequency other
than the frequencies listed above, you can take your transceiver to an
authorized facility to set your transceiver to a frequency you have a
license to use.
About Quiet Tone
Quiet tone helps eliminate interference between different users of the
same frequency, letting you talk and listen to people who are using other
transceivers set to the same frequency and quiet tone code. This is like
having a sub-channel within a channel, giving you greater communication
flexibility. When you set a quiet tone code, there are 38 to choose from,
and turn on your transceiver's quiet tone, the transceiver transmits a
tone with your transmission, letting you communicate with anyone who has a
transceiver set to the same frequency and code. This tone is too low for
you to hear, but other transceivers can detect it.
Once you set a quiet tone on the transceiver, it only receives those
transmissions that include the same tone. If two different groups operate
transceivers in the same area on the same frequency, they do not hear each
other's broadcast if they both use quiet tone and each selects a different
quiet tone.
Using a Quiet Tone Frequency
1. Turn VOLUME/OFF fully counterclockwise until it clicks to turn off the
transceiver.
2. Remove the battery compartment cover. Then lift up the plastic cover
marked QUIET.
3. Choose a quiet tone code from the following table, then use a pointed
object such as a straightened paper clip to set the position of each
DIP switch to 1 (up) or 0 (down) as indicated in the following table.
Quiet Frequency DIP Switch Setting
Code (Hz) 0 = down/1 - up
None 000000
1 67.0 000001
2 71.9 000010
3 74.4 000011
4 77.0 000100
5 79.7 000101
6 82.5 000110
7 85.4 000111
8 88.5 001000
9 91.5 001001
10 94.8 001010
11 97.4 001011
12 100.0 001100
13 103.5 001101
14 107.2 001110
15 110.9 001111
16 114.8 010000
17 118.8 010001
18 123.0 010010
19 127.3 010011
20 131.8 010100
21 136.5 010101
22 141.3 010110
23 146.2 101111
24 151.4 011000
25 156.7 011001
26 162.2 011010
27 167.9 011011
28 173.8 011100
29 179.9 011101
30 186.2 011110
31 192.8 011111
32 203.5 100000
33 210.7 100001
34 218.1 100010
35 225.7 100011
36 233.6 100100
37 241.8 100101
38 250.3 100110
4. Replace the plastic cover and the battery compartment cover. Then
turn VOLUME/OFF clockwise until it clicks to turn on the transceiver.
The transceiver sets the quiet tone code.
Note: If the DIP switch setting is not listed in the table above, no
tone is set.
(EB 1/17/1)
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