RadioShack Pro 28 Programmable Scanner Reciever Owners Manual

21
5. Slowly turn SQUELCH counterclockwise until you hear a hissing
sound. 
6. Adjust 
VOLUME/OFF to a comfortable listening level.
7. Slowly turn 
SQUELCH clockwise until the hissing sound stops.
Note:
 If you want to listen to a weak or distant station, turn 
SQUELCH
counterclockwise to increase receiver sensitivity. If reception is poor,
turn 
SQUELCH clockwise to decrease receiver sensitivity.
STORING FREQUENCIES
Follow these steps to store frequencies into channels.
1. Press 
MANUAL, enter the...

22
Notes:
• If you make a mistake in Step 2, 
Error appears on the display
and the scanner beeps three times. Simply start again from
Step 2. 
• Your scanner automatically rounds the entered frequency to the
nearest valid frequency. For example, if you try to enter a fre-
quency of 151.473, your scanner accepts it as 151.475.
4. Repeat Steps 1-3 to program more channels. Or, if you want to
program the next channel in sequence, press 
MANUAL and repeat
Steps 2 and 3. 
Notes:
• VHF band frequencies (30-300...

23
3. To change the search direction, press t to search downward or s to
search upward. 
b, SRCH, and t or s appear on the display.
4. When the scanner stops on an active frequency, you can do one of
the following:
• To store the displayed frequency into the monitor memory,
press 
MON/0. MON appears on the display.
• To continue the search, press t or s.
• To hold the frequency, press 
HOLD/BAND. H appears on the
display. To continue the search, press and hold t or s for about 1
second. 
H disappears...

24
• To hold the frequency, press HOLD/BAND. h appears on the dis-
play. To continue the search, press and hold t or s for about 1
second.
Notes:
• If you want to step through the frequencies while 
h is displayed,
press t or s.
• If you tune to a search skip frequency,
 L appears on the dis-
play (see “Search Skip Memory”).
• If you press 
HOLD/BAND, the scanner restarts as a band
search. 
b, SRCH, and t or s appear on the display.
Search Skip Memory
You can skip up to 20 specified frequencies during a...

25
LISTENING TO THE MONITOR MEMORY
The scanner has one monitor memory. You can use this memory to
temporarily store a frequency while you decide whether to store it into a
channel. This is handy for quickly storing an active frequency when you
search through an entire band. Once you have temporarily stored a fre-
quency into the scanner’s monitor memory, you can listen to it by press-
ing 
MANUAL then MON/0.
MOVING A FREQUENCY FROM THE 
MONITOR MEMORY TO A CHANNEL
Follow these steps to move a frequency...

26
4. Press MON/0. The entered frequency appears, and the channel
number starts flashing.
5. Press 
WX/E. The scanner stores the frequency into the selected
channel, and the channel number stops flashing.
SCANNING THE STORED CHANNELS
To scan the stored channels, press SCAN. Your scanner then scans
through all non-locked channels (see “Locking Out Channels”). 
Using the 2-Second Delay
Many agencies use a two-way radio system that has a period of several
seconds between a query and a reply. To avoid...

27
To turn off the 2-second delay on any active channel, press DELAY again
while the channel number is displayed. 
D disappears from the display.
Locking Out Channels
You can increase the effective scanning speed by locking out individual
channels that have a continuous transmission, such as a weather chan-
nel. To lock out a channel, manually select the channel and press 
L-
OUT/S/S
 so L appears on the display.
Notes: 
• You can still manually select locked out channels.
• You cannot lock out all...

28
LISTENING TO THE WEATHER BAND
The FCC (Federal Communications Commission) has allocated 11
channels for use by the National Oceanic and Atmospheric Administra-
tion (NOAA). We have preprogrammed your scanner with the seven fre-
quencies most commonly used by NOAA (see “National Weather
Frequencies”). 
To hear your local forecast and regional weather information, simply
press 
WX/E. Your scanner begins scanning through the weather band,
and 
WX appears on the display. 
Your scanner should stop within a...

29
A GENERAL GUIDE TO SCANNING
Reception of the frequencies covered by your scanner is mainly “line-of-
sight.” That means you usually cannot hear stations that are beyond the
horizon.
GUIDE TO FREQUENCIES
National Weather Frequencies
* Not preprogrammed in this scanner.
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 fre-...

30
GUIDE TO THE ACTION BANDS
Typical Band Usage
Primary Usage
As a general rule, most of the radio activity is concentrated on the fol-
lowing frequencies:
VHF Band
UHF Band
Note:
 Remote control stations and mobile units operate at 5 MHz higher
than their associated base stations and relay repeater units.VHF Band (30.00–300.0 MHz)
Low Range 29.00–50.00 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...