PRO-38 10-Channel Direct Entry Programmable Scanner
(200-0139)                 Preparation                Faxback Doc. # 48558

POWER SOURCES

You can power your scanner from the following three sources:

  Internal batteries.

  Your vehicle's battery (using an optional DC adapter).

  A standard AC outlet (using an optional AC adapter).

Installing or Replacing Batteries

Your scanner uses five AA batteries for power.  For longest operation and
best performance, we recommend alkaline batteries (Cat. No. 23-552).  Or,
you can use rechargeable nickel-cadmium batteries (Cat. No. 23-125).

Your scanner beeps every 15 to 30 seconds when the batteries are low.
When this happens, replace or recharge all five batteries immediately.

CAUTION:  Your scanner has a built-in circuit that lets you recharge
          nickel-cadmium batteries inside the scanner.  However, you must
          not use this circuit when you have installed non-rechargeable
          batteries in your scanner.  Be sure to set the switch in the
          battery compartment to the correct position for the type of
          batteries you install.

1.  Remove the battery compartment cover by pressing down on the arrow and
    sliding the cover in the direction of the arrow.

2.  Remove the battery holder from the compartment and remove any old
    batteries.  Then, install five AA batteries, observing the polarity
    (+ and -) marked on the battery holder.

3.  Set the switch in the battery compartment to the correct position for
    the type of batteries you install.  Set the switch to REG. ALK. BATT.
    if you install regular or alkaline type batteries.  Set the switch to
    NI-CAD. BATT. if you install nickel-cadmium type batteries.  Never set
    this switch to NI-CAD. BATT. with non-rechargeable batteries.  If you
    attempt to recharge non-rechargeable batteries, they become very hot
    and night damage your scanner or might even explode.

4.  Place the battery holder in the compartment so that the holder's metal
    contacts line up with the metal contacts in the battery compartment.

5.  Replace the battery compartment cover.

Using an AC Power Source

To power your scanner from AC power, you need RadioShack's AC adapter
(Cat. No. 273-1652A).  Use of another adapter could damage your scanner
or the adapter.

1.  Ensure that you have set the switch in the battery compartment to the
    correct position.  (See "Installing or Replacing Batteries", above).

2.  Connect the adapter's green barrel plug to the adapter's cord and set
    the barrel plug's tip polarity to positive.

3.  Plug the adapter's plug into your scanner's EXT, PWR jack.

4.  Plug the adapter power module in a standard AC outlet.  This provides
    power to operate your scanner.  Also, if you have installed
    rechargeable batteries and set the switch in the battery compartment
    to NI-CAD. BATT. the adapter charges the batteries in your scanner.

5.  When you finish using the AC adapter, disconnect it from the EXT. PWR
    jack.

Using a DC Adapter

You can power your scanner from your vehicle's cigarette lighter socket,
provided the vehicle has a 12-volt negative-ground electrical system.  To
do so, you need RadioShack's Power Cord Set (Cat. No. 270-1533).

Note:  Mobile use of a scanner is unlawful or requires a permit in some
       areas.  Check the laws in your area.

Use of a DC adapter other than the one we recommend could damage the
scanner or the adapter.

1.  Ensure that you have set the switch in the battery compartment to the
    correct position.  (See "Installing or Replacing Batteries", above).

2.  Plug the adapter's plug into your scanner's EXT. PWR jack.

3.  Insert the other end of the adapter into your vehicle's cigarette
    lighter socket.  This provides power to your scanner.  Also, if you
    have installed rechargeable batteries and set the switch in the
    battery compartment to NI-CAD. BATT. the adapter charges the batteries
    in your scanner.

4.  When you finish using the DC adapter, disconnect it from the cigarette
    lighter socket.  Then, disconnect it from your scanner.

Note:  Do not let the adapter's plug touch any part of your vehicle while
       the adapter is plugged into the cigarette lighter socket.  Doing so
       could blow a fuse or damage the adapter.

CHARGING NICKEL-CADMIUM BATTERIES

Your scanner has a built-in circuit that recharges nickel-cadmium
batteries.  To charge the batteries, simply install them in your scanner,
set the switch in the battery compartment to NI-CAD. BATT., and connect an
external power adapter to your scanner, as explained "Power Sources".

CAUTION:  Do not connect either adapter to the EXT. PWR jack if you have
          not installed rechargeable batteries, and are unsure of the
          position of the switch in the battery compartment, or know that
          the switch is set to NI-CAD. BATT.  Non-rechargeable batteries
          can become hot and even explode if you try to recharge them.

It takes 10 to 18 hours to recharge batteries that are fully discharged.
You can operate your scanner while recharging nickel-cadmium batteries,
but the charging time is lengthened.

Charging Hints:

Nickel-cadmium batteries, like those you use in this scanner, last longer
and deliver more power if you occasionally let them discharge completely.
To do this, simply use the scanner until it begins to beep every 15 to 30
seconds.  Then, fully charge the batteries.

If you do not occasionally let nickel-cadmium batteries fully discharge,
they lose the ability to use their full capacity.

Note:  The first time you use a set of nickel-cadmium batteries, you need
       to change them at least 24 hours to bring them to a full charge.

CONNECTING THE ANTENNA

Attach the flexible antenna to the BNC connector on top of your scanner.
Slip the slot in the antenna's connector over the protrusion on the
connector.  Then press down and rotate the base of the antenna until it
locks into place.

The BNC connector on your scanner makes it easy to use your scanner with a
variety of antennas.  You can remove the supplied antenna, if you wish, to
try a different one.  You can attach an external mobile antenna or outdoor
base antenna.

Use coax cable to connect an outdoor antenna.  Always use 50-Ohm coaxial
cable.  For lengths over 50 feet, use RG8 low-loss dielectric coaxial
cable.

ATTACHING THE BELT CLIP

You can connect the supplied belt clip to your scanner to make it easier
to use your scanner when you are on the go.  Connect the clip to your
scanner with the two provided screws.

CONNECTING AN EARPHONE

For private listening, plug an earphone into the EAR jack on top of your
scanner.  This automatically disconnects the speaker.  We recommend
RadioShack's earphone, Cat. No. 33-175.  In a noisy environment, mono
headphones (Cat. No. 20-210) make listening easier.

Use caution when you connect headphones to your scanner.  Before you put
on the headphones, turn down the scanner's volume.  Then, adjust the
volume to a comfortable level.

CONNECTING AN EXTENSION SPEAKER

In a noisy area, an extension speaker such as RadioShack's Cat. No.
21-549, positioned in the right place, might provide more comfortable
listening.  Plug the speaker cable's 1/8-inch mini-plug into your
scanner's EAR jack.

(LB/eb 7/1/98)