PRO-23
(200-0104)                 Preparation                Faxback Doc. # 39633


CONTROL LOCATION AND FUNCTION

OFF/VOLUME is the power switch and volume control.  When not in use,
turn this control to the left to turn it off.

SQUELCH control eliminates annoying background noise between signal
transmissions.  When properly set, SQUELCH will keep the PRO-23 silent
until a signal comes in on the channel(s) you are listening to; then the
Squelch circuit will "open" and you'll hear the signal.

MANUAL Selector Button advances the Receiver to the next channel in
sequence when the SCAN/MANUAL button is in the MANUAL position.  Each
time you press this button, the Receiver will advance just one channel.

SCAN/MANUAL Switch determines the function of the scanning feature.
In the SCAN position, each channel will be scanned automatically.  In
the MANUAL position, the PRO-23 will not scan, but will remain turned
to the channel indicated by a lighted channel indicator.

Channel Lock-Out Switches activate the four channels individually.  When
a switch is up (next to LED), that channel will be scanned for messages
in either automatic or manual mode; when switch is down, that channel will
be skipped ("locked out") by the scanner.  When a channel is vacant (no
crystal plugged in) or when you don't want to monitor that channel, leave
its switch down.  Otherwise leave the switches in the "up" position.

LED Channel Indicators show which channel is being scanned or monitored.
Each channel indicator will light up for an instant as it is scanned;
if there is a message on that channel, the LED will remain lit until
message is over and scanning resumes.  Locked-out channels will not
be scanned; therefore their indicators will not light up.

EARphone Jack plugs in the earphone.  Use it for private listening or in
areas where background noise is excessive (in factories, at the scene
of an accident or fire, in a vehicle, etc.).  Plugging in the Earphone
disconnects the PRO-23's internal speaker.

ANTenna Jack connects an antenna to the PRO-23.  You can use either
the telescopic antenna or flexible antenna provided.

A Belt Clip attaches the PRO-23 to your belt or other convenient place.

Battery Compartment holds the internal power source (4 type AA batteries).

Crystal Compartment contains crystals selected for operation.

External Power (PWR) Jack lets you connect an external source of 6 volts
DC (negative ground) for operation without batteries.

NOTE:  To recharge nickel-cadmium batteries in the receiver, simply plug
       an external 6-volt DC power source into the CHG jack.  To fully
       charge nickel-cadmium batteries, leave them on charge for 10-18
       hours.

The Recharge (CHG) Jack is to be used only when nickel-cadmium batteries
are installed in the receiver.  Also, do not attempt to operate the unit
while recharging nickel-cadmium batteries.

To use your Pocket-Scanner, you must do three things:

  Install the batteries
  Connect one of the antennas supplied
  Install 1, 2, 3, or 4 crystals

To install the batteries, position the Receiver as shown, press in the
DOWN ARROW mark, and slide the battery/crystal compartment cover off.

Take out the battery holder.  Insert four fresh AA batteries, one at a
time, making sure the polarity markings inside the holder match up
(+ to + and - to -) with markings on the batteries.

We recommend that you use rechargeable nickel cadmium AA batteries,
Catalog Number 23-125, or AA alkaline E N E R C E L L S, Catalog
Number 23-552.

Two antennas are provided with the PRO-23: a flexible "rubber duck"
antenna and a telescopic one.  The flexible antenna is for use in
cramped areas or whenever a longer antenna would get in the way.  The
telescopic antenna is for obtaining the very possible reception from
your receiver.  The telescopic antenna must be extended fully for proper
operation.

Crystals are not included with your Pocket-Scanner because the frequencies
are so numerous.  The frequencies used in your part of the country will
be different from those used in other areas.  Your Radio Shack store
manager will advise you as to what frequencies are most used and help
you in your selection of crystals.

Insert crystal(s) into crystal socket.  You can install up to 4 crystals;
set the band selector switch for each crystal socket to either VHF
Aircraft or VHF Hi.  Follow the illustration provided for proper
installation of each crystal.

For VHF Aircraft, set the band selector switch to A (marked "A" on printed
circuit board).

For VHF Hi, set the band selector switch to H (marked "H" on printed
circuit board)

In the example shown, Channels 1 through 3 will be used with a VHF
Aircraft crystal and Channel 4 will be used with a VHF Hi crystal.

Because crystal frequencies must be extremely accurate and crystals should
be matched for specific units, we recommend you obtain crystals for your
Pocket-Scanner only from Radio-Shack.  Be sure to specify the Catalog
Number and Model description of your Monitor Receiver.  We can not be
responsible for the poor or improper operation of crystals from any
other manufacturer.

(LB/km-05/20/1997)

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