RadioShack Pro 70 Portable Scanner Reciever Owners Manual

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4. Slide the battery holder or battery pack into the com-
partment.
Caution: The battery holder or battery pack fits only
one way inside the battery compartment. Do not
force it.
5. Replace the cover.
If 
BATT flashes on the display, immediately replace all six
non-rechargeable batteries, remove and recharge all six
rechargeable batteries, or recharge the battery pack. See
“Charging a Rechargeable Battery Pack” on Page 13.
Caution: Always dispose of old batteries promptly and
properly. Do not bury or...

12
Warning: Do not use an AC adapter’s polarized plug with
an extension cord, receptacle, or other outlet unless the
blades can be fully inserted to prevent blade exposure.
Cautions:
• You must use an AC adapter that supplies 9 volts
and delivers at least 300 milliamps. Its center tip
must be set to negative, and its plug must correctly fit
the scanner’s 
PWR/DC 9V jack. The recommended
adapter meets these specifications. Using an
adapter that does not meet these specifications
could damage the scanner...

13
1. Connect the DC adapter’s orange barrel plug to the
adapter’s cable, with the tip set to – (negative).
2. Set the adapter’s voltage switch to 9V.
3. Insert the barrel plug into the scanner’s 
PWR/DC 9V
jack.
4. Plug the other end of the adapter into your vehicle’s
cigarette-lighter socket.
Note:
 If the scanner does not operate properly when you
connect a DC adapter, unplug the adapter from the ciga-
rette-lighter socket and clean the socket to remove ashes
and other debris.
Charging a Rechargeable...

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Note: A rechargeable battery pack lasts longer and deliv-
ers more power if you occasionally let it fully discharge. To
do this, simply use the scanner until 
BATT appears on the
display. Then fully charge the battery pack.
Important! At the end of a rechargeable battery pack’s
useful life, it must be recycled or disposed of properly.
Contact your local, county, or state hazardous waste man-
agement authorities for information on recycling or dispos-
al programs in your area. Some options that might...

15
Connecting an Optional Antenna
The antenna connector on your scanner makes it easy to
use the scanner with a variety of antennas. Instead of the
supplied antenna, you can attach a different one, such as
an external mobile antenna or outdoor base station anten-
na. Your local RadioShack store sells a variety of anten-
nas.
Always use 50-ohm coaxial cable, such as RG-58 or RG-
8, to connect an outdoor antenna. For lengths over 50
feet, use RG-8 low-loss dielectric coaxial cable. If your an-
tenna’s...

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CONNECTING AN EARPHONE/
HEADPHONES
For private listening, you can plug an earphone or mono
headphones (such as Cat. No. 33-175 or 20-210) into the
 jack on top of your scanner. This automatically dis-
connects the internal speaker.
 Listening Safely
To protect your hearing, follow these guidelines when you
use an earphone or headphones:
• Do not listen at extremely high volume levels.
Extended high-volume listening can lead to perma-
nent hearing loss.
• Set the volume to the lowest setting before you...

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Even though some earphones and headphones let you
hear some outside sounds when you listen at normal lev-
els, they still can present a traffic hazard.
CONNECTING AN EXTENSION 
SPEAKER
In a noisy area, an extension speaker (such as Cat. No.
21-549) or an amplified speaker (such as Cat. No. 21-
541), positioned in the right place, might provide more
comfortable listening. Plug the speaker cable’s 
1/8-inch
mini-plug into your scanner’s   jack.
USING THE BELT CLIP
You can use the belt clip attached to...

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UNDERSTANDING THE PRO-70
A LOOK AT THE KEYPAD
Your scanner’s keys might seem confusing at first, but this
information should help you understand each key’s func-
tion.
WX — scans through the 10
preprogrammed weather
channels.
BAND — selects a prepro-
grammed search band.
SCAN — scans through the
programmed channels.
MANUAL — stops scanning and lets you directly enter a
channel number.
/  — begins searching up or down for active frequen-
cies, or selects the direction when you scan channels.
CLEAR —...

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A LOOK AT THE DISPLAY
The display has indicators that show the scanner’s current
operation. A quick look at the display will help you under-
stand how to operate your scanner.
MAN — appears when you manually select a channel.
SCAN — appears when you scan channels.
WX — appears when you scan or manually search the 10
preprogrammed weather channels.
MON — appears when you listen to the monitor memory.
BATT — appears when the batteries are low.
L/O — appears when you manually select a channel you...

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ch — the digits that precede this indicator (1—50) show
which channel the scanner is tuned to.
–d — appears during a direct frequency search.
000.0000 — the digits in the middle of the display show
which frequency the scanner is tuned to.
Error — appears when you make an entry error.
dUPL — (duplicate) appears when you try to store a fre-
quency that is already stored in another channel.
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