RadioShack Pro 28 Programmable Scanner Reciever Owners Manual

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1. Connect the adapter’s blue-tipped barrel plug to the adapter’s cord
and set the barrel plug’s tip to positive.
2. Insert the adapter’s blue-tipped barrel plug into your scanner’s
POWER jack. 
Note:
 If you installed rechargeable nickel-cadmium batteries in the
scanner, remove the plastic cap from the 
CHARGE jack and put the
cap in the 
POWER jack. Connect the AC adapter to the CHARGE
jack. This powers the scanner and recharges the batteries at the
same time. See “Charging Nickel-Cadmium...

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USING VEHICLE BATTERY POWER
You can power the scanner from your vehicle’s cigarette lighter socket
with an optional DC cigarette lighter power cord (such as Cat. No. 270-
1533).
Cautions:
• The recommended DC power cord supplies 12 volts and delivers
at least 200 milliamps. Its center tip is set to positive and its plug
properly fits the scanner’s 
POWER and CHARGE jacks. Using a
power cord that does not meet these specifications could damage
the scanner or the power cord.
• To protect your vehicle’s...

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• If the scanner does not operate properly when you use a DC
power cord, unplug the power cord from the cigarette lighter
socket and clean the socket to remove ashes and debris. If it
still does not operate properly, check the fuse in the power cord.
CHARGING NICKEL-CADMIUM BATTERIES
The scanner has a built-in circuit that lets you recharge nickel-cadmium
batteries while they are in the scanner. To charge the batteries, remove
the plastic cap from the scanner’s 
CHARGE jack and put the cap in the...

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CONNECTING THE ANTENNA
Follow these steps to attach the supplied flexible antenna to the connec-
tor on the top of your scanner. 
1. Align the slots around the antenna’s connector with the tabs on the
jack.
2. Press the antenna down over the jack and rotate the antenna’s
base clockwise until it locks into place.
Connecting an Optional Antenna
The antenna connector on your scanner makes it easy to use the scan-
ner with a variety of antennas. Instead of the supplied antenna, you can
attach a different...

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CONNECTING AN EARPHONE/
HEADPHONES
For private listening, you can plug an earphone or mono headphones
(such as Radio Shack Cat. No. 33-175 or 20-210) into the  jack on top
of your scanner. This automatically disconnects the internal speaker.
Listening Safely
To protect your hearing, follow these guidelines when you use an ear-
phone 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...

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CONNECTING AN EXTENSION SPEAKER
In a noisy area, an extension speaker (such as Radio Shack Cat. No.
21-549) or an amplified speaker (such as Radio Shack Cat. No. 21-
541), positioned in the right place, might provide more comfortable lis-
tening. Plug the speaker cable’s 
1/8-inch mini-plug into your scanner’s
 jack.
ATTACHING THE BELT CLIP 
You can attach the supplied belt clip to make your scanner easier to use
when you are on the go. Use the supplied screws to attach the belt clip
to the scanner....

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UNDERSTANDING YOUR SCANNER 
A LOOK AT THE KEYPAD
Your scanner’s keys might seem confusing at first, but this information
should help you understand each key’s function.
SCAN — scans through the stored channels. 
MANUAL — stops scanning and lets you directly enter a channel num-
ber or frequency. 
DELAY — programs a 2-second delay for the selected channel.
L-OUT/S/S — lets you lock out a selected channel. Skips a specified fre-
quency during band or direct search.
CLEAR/. — erases an incorrect entry or...

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A LOOK AT THE DISPLAY
The display has several indicators that show the scanner’s current op-
erating mode. A quick look at the display will help you understand how
to operate your scanner.
SRCH — appears during a band search (b also appears) or a direct
search (
d also appears).
SCAN — appears when you scan channels.
MAN — appears when you manually select a channel.
MON — appears when you listen to a monitor memory.
WX — appears when you scan the preprogrammed weather channels.
 — flashes when you...

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b — appears during a band search.
d — appears during a direct search.
H — appears during a band search hold.
h — appears during a direct search hold.
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OPERATION 
TURNING ON THE SCANNER AND SETTING 
SQUELCH
1. Turn SQUELCH fully clockwise.
2. Turn 
VOLUME/OFF clockwise until it clicks. The scanner automati-
cally scans the 30 channels.
Note:
 The first time you turn on the scanner, the channels might
not have any frequencies stored in them, but the scanner will con-
tinuously scan the empty channels. 
3. Press 
MANUAL to stop the scanning. The display shows the cur-
rent channel.
4. Turn 
VOLUME/OFF clockwise to set the scanner’s volume about
half...