Radio Shack 21-1840 User manual

Cat. No. 21-1840
OWNER’S MANUAL
Please read before using this equipment.
Personal FM
Radio
n14 Channels
nCall Button
nAutomatic Squelch
nMonitor
nHeadset Jack for Handsfree Com-
munication
nTransmit/Battery Indicator
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Your RadioShack Personal FM Radio is a light-
weight, palm-sized radio that you can clip to your belt
and carry almost anywhere. You can use it to talk
with another person who has an FRS radio set to the
same
frequency (14-channel selectable) as your ra-
dio.
Your radio has
auto-squelch , which means you won’t
hear anything on the channel unless someone is
transmitting nearby on the same channel. But, you
can turn off auto-squelch to hear weaker, distant
transmissions (see Page 11).
Also, if you do not transmit for over 30 seconds, the
radio automatically switches to a power save mode
and returns to full power when it receives a transmis-
sion or you press any key.
We recommend you record your radio’s serial
number here. The number is on the radio’s back
panel.
Serial Number:
INTRODUCTION
©1998 Tandy Corporation.
All Rights Reserved.
RadioShack is a registered trademark used by Tandy Corporation.
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PREPARATION
INSTALLING BATTERIES
Your radio uses three AA batteries for power. For the
longest life, we recommend alkaline batteries (avail-
able from your local RadioShack store). You can also
use rechargeable nickel-cadmium batteries (such as
Cat. No. 23-325) and recharge them in the radio us-
ing an optional AC adapter (such as Cat. No. 273-
1663).
Follow these steps to install batteries.
1. Turn the radio off, remove the screw from the
belt clip, then slide off the battery compartment
cover.
ALKALINE/
Ni-Cd
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2. Set the switch inside the compartment to ALKA-
LINE (for alkaline batteries) or Ni-Cd (for
rechargeable nickel-cadmium batteries).
Caution: Do not use alkaline batteries with the
switch set to Ni-Cd.
3. Install the batteries, matching the polarity sym-
bols (+ and –) inside the compartment.
4. Replace the cover.
Caution: Do not mix old and new batteries, different
types of batteries (standard, alkaline, or recharge-
able), or rechargeable batteries of different capaci-
ties.
The radio’s range decreases as the battery power
decreases. To ensure maximum range, keep fresh
batteries in the radio.
When the TX/LO BATT (Transmit/Low Battery) indi-
cator flashes when you are not holding down PTT or
pressing CALL, replace the batteries.
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Recharging Nickel-Cadmium Batteries
If you use rechargeable nickel-cadmium batteries,
you can recharge them in the radio using an option-
al AC adapter (such as Cat. No. 273-1663). Be sure
the switch inside the battery compartment is set to
Ni-Cd.
Caution: You must use an AC adapter that supplies
6 volts DC and delivers at least 700 mA. Its center
tip must be set to positive and its plug must fit the ra-
dio’s CHRG jack. The recommended adapter meets
these specifications. Using an adapter that does not
meet these specifications could damage the radio or
the adapter.
1. Attach the adapter’s 3.4 mm outer diameter/1.3
mm inner diameter barrel plug to the adapter
and set TIP to positive (+).
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2. Connect the charger’s barrel plug to the radio’s
CHRG jack and plug its other end into a standard
AC outlet
3. Complete charging takes about 15 hours. When
charging is complete, unplug the AC adapter
from the AC outlet and disconnect it from the
CHRG jack.
SETTING THE QUIET CODE AND
CHANNEL
Use the 4-digit DIP switches inside the battery com-
partment to set the quiet code and channel. The left
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array of switches controls the quiet code, while the
right array controls the channel.
Note: You can only communicate with another radio
which uses the same channel and Quiet code as
your radio.
QUIET Code Frequency
(Hz) Dip Switch Setting
without
QUIET 0000
12 100.0 0001
13 103.5 0010
14 107.2 0011
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15 110/9 0100
16 114.8 0101
17 118.8 0110
18 123.0 0001
19 127.3 0010
20 131.8 0011
21 136.5 0100
22 141.3 0101
23 146.2 0110
24 151.4 0111
25 156.7 1000
26 162.2 1001
Channel Frequency
(MHz) Dip Switch Setting
1 462.5625 0000
1 462.5625 0001
QUIET Code Frequency
(Hz) Dip Switch Setting
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2 462.5875 0010
3 462.6125 0011
4 462.6375 0100
5 462.6625 0101
6 462.6875 0110
7 462.7125 0111
8 467.5625 1000
9 467.5875 1001
10 467.6125 1010
11 467.6375 1011
12 467.6625 1100
13 467.6875 1101
14 467.7125 1110
14 467.7125 1111
Channel Frequency
(MHz) Dip Switch Setting
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USING THE RADIO
Rotate VOLUME to turn the radio on and off and ad-
just the volume. A tone sounds when you turn it on.
To talk, hold down the headset’s PTT (push to talk)
button. Speak into the microphone when the TX/LO
BATT indicator lights. When you finish speaking, re-
lease PTT.
The TX/LO BATT indicator lights when you transmit
and flashes when the battery is low.
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