RadioShack Pro 70 Portable Scanner Reciever Owners Manual

31
CLEARING A STORED CHANNEL
If you no longer want a frequency stored in a channel
(and you do not want to replace that frequency with a dif-
ferent one), follow these steps to clear the stored fre-
quency.
1. Select the channel that you want to clear.
2. Press 
PGM. PGM appears on the display.
3. Press 
CLEAR. The frequency number flashes on the
display.
4. Press 
E/L-OUT. L/O (lockout — see “Locking Out
Channels” on Page 32) appears, the channel num-
ber flashes, and the frequency number changes to...

32
SPECIAL FEATURES
USING THE KEYLOCK
Once you program your scanner, you can protect it from
accidental program changes by turning on the keylock
feature. When the keypad is locked, the only controls that
operate are 
LIGHT (see “Using the Display Backlight” on
Page 34), 
VOLUME, and SQUELCH.
Note:
 The keylock does not prevent the scanner from
scanning channels or monitoring a single channel, which-
ever feature you last selected.
To turn on the keylock, press and hold   for about 3
seconds until...

33
To remove the lock-out from a channel, select that chan-
nel again, then press 
E/L-OUT so L/O disappears from the
display.
Notes:
• You can manually select locked-out channels.
• Your scanner automatically locks out empty chan-
nels.
USING A 2-SECOND DELAY
Many agencies use a two-way radio system that has a pe-
riod of several seconds between a query and a reply. To
avoid missing a reply, you can program a 2-second delay
into any channel or frequency. When your scanner stops
on a channel or frequency...

34
• If the scanner is in the search mode, press ./DLY
while the scanner is searching. DELAY appears on
the display and the scanner automatically adds a 2-
second delay to every transmission it stops on.
To turn off the 2-second delay, press 
./DLY while the scan-
ner is monitoring the channel or frequency. 
DELAY disap-
pears from the display.
USING THE DISPLAY BACKLIGHT
You can turn on the display’s backlight for easy viewing in
the dark. Press 
LIGHT to turn on the display light for 5 sec-
onds. To...

35
To hear your local forecast and regional weather informa-
tion, simply press 
WX. Your scanner begins to scan
through the weather band, and   and 
WX appear on the
display. To reverse the scanning direction, press   or  .
Your scanner should stop within a few seconds on your lo-
cal weather broadcast. If the broadcast is weak, you can
press   or   again to resume scanning.
Note:
 To manually select a preprogrammed weather
channel, you can:
• repeatedly press 
WX until MAN appears on the dis-
play,...

36
A GENERAL SCANNING GUIDE
Reception of the frequencies covered by your scanner is
mainly “line-of-sight.” This means you usually cannot hear
stations that are beyond the horizon.
GUIDE TO FREQUENCIES
National Weather Frequencies
*Not preprogrammed in this scanner, but you can manual-
ly program it.
Ham Radio Frequencies
Ham radio operators often transmit emergency informa-
tion when other means of communication break down.
The following chart shows the frequencies this scanner re-
ceives that Ham radio...

37
Birdie Frequencies
Every scanner has birdie frequencies. Birdies are signals
created inside the scanner’s receiver. These operating
frequencies might interfere with broadcasts on the same
frequencies. If you program one of these frequencies, you
hear only noise on that frequency. If the interference is not
severe, you might be able to turn 
SQUELCH clockwise to
cut out the birdie.
The birdie frequencies on this unit to watch for are:
To find the birdies in your scanner, begin by disconnecting
the...

38
Typical Band Usage
Primary Usage
As a general rule, most of the radio activity is concentrated
on the following frequencies:
VHF BandHF Band (3.00–30.0 MHz)
10-Meter Amateur  29.00–29.70 MHz
High Range 29.70–29.90 MHz
VHF Band (30.00–300.0 MHz)
Low Range 30.00–50.00 MHz
6-Meter Amateur 50.00–54.00 MHz
U.S. Government 137.00–144.00 MHz
2-Meter Amateur 144.00–148.00 MHz
High Range 148.00–174.00 MHz
UHF Band(300.00 MHz–3.0 GHz)
Military Aircraft 380.00–384.00 MHz
U.S. Government 406.00–420.00 MHz...

39
UHF Band
Note: Remote control stations and mobile units operate at
5 MHz higher than their associated base stations and re-
lay repeater units.
Specified Intervals
Frequencies in different bands are accessible only at spe-
cific intervals. For example:
Note: Your scanner automatically rounds the entered fre-
quency down to the closest valid frequency. For example,
if you try to enter 151.473, your scanner accepts this as
151.470.Activities Frequencies (MHz)
Land-Mobile
“Paired” Frequencies...

40
BAND ALLOCATION
To help decide which frequency ranges to scan, use the
following listing of the typical services that use the fre-
quencies your scanner receives. These frequencies are
subject to change, and might vary from area to area. For
a more complete listing, refer to 
Police Call Radio Guide
Including Fire and Emergency Services
, available at your
local RadioShack store.
Abbreviations Services
AIR ......................................................................... Aircraft...