RadioShack Pro 2045 Weather Alert Home Scanner Owners Manual

31
Assigning a CTCSS Tone 
Frequency to a Channel
You can specify the CTCSS tone fre-
quency you want the scanner to de-
tect on a specific preprogrammed
channel.
1. Select the channel number that
has the frequency you want to
assign a CTCSS tone frequency
to.
2. Press 
PROGRAM. PGM appears
on the display.
3. Press 
CTCSS. CTCSS and 00.0
appear on the display.
4. Press 
FREQ/CHAN-LOCK until
FREQ appears on the display.
5. Using 
s, t, or the rotary tuner,
choose the CTCSS frequency.
The channel number...

32
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 hori-
zon.
During the summer months, you might
be able to hear stations in the 30–50
MHz range located several hundred or
even thousands of miles away. This is
because of summer atmospheric con-ditions. This type of reception is unpre-
dictable but often very interesting!
GUIDE TO 
FREQUENCIES
National Weather Service 
Frequencies...

33
Birdie Frequencies
Birdies are frequencies your scanner uses when it operates. These operating fre-
quencies might interfere with broadcasts on the same frequencies. If you tune 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. Here are this scanner’s birdie frequencies that you might want to
watch for:
To find the birdies in any receiver, begin by disconnecting the antenna and moving...

34
GUIDE TO THE ACTION BANDS
Typical Band Usage
HF Band (29.00–30.0 MHz)
10-Meter Amateur ................................................................. 29.00–29.70 MHz
VHF Band (30.00–300.0 MHz)
Low Range ............................................................................ 29.70–50.00 MHz
6-Meter Amateur ................................................................... 50.00–54.00 MHz
Aircraft ............................................................................... 108.00–136.98 MHz...

35
Primary Usage
As a general rule, most radio activity is concentrated on the following 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.
Activities Frequencies (MHz)
Government, Police, and Fire
Emergency Services153.785–155.980
158.730–159.460
Railroad  160.000–161.900
Activities Frequencies (MHz)
Land-Mobile Paired Frequencies 450.000–470.000
Base Stations 451.025–454.950
Mobile Units...

36
BAND ALLOCATION
To help decide which frequency ranges to scan, use the following listing of the typi-
cal services that use the frequencies your scanner receives. These frequencies are
subject to change, and might vary from area to area. For a more complete listing,
refer to the “Police Call Radio Guide including Fire and Emergency Services,” avail-
able at your local RadioShack store.
Abbreviations
AIR ................................................. Aircraft
BIFC ..... Boise (ID)Interagency Fire...

37
ROAD ........ Road & Highway Maintenance
RTV .. Radio/TV Remote Broadcast Pickup
TAXI ......................................Taxi Services
TELB ..............................Mobile Telephone
(Aircraft, Radio Common Carrier, Landline companies)
TELC .............................. Cordless Phones
TELM ...................Telephone Maintenance
TOW .........................................Tow Trucks
TRAN ................... Transportation Services
(Trucks, Tow Trucks, Buses,
Railroad, Other)
TSB...

38
Aircraft Band (108–136 MHz)
108.000-121.490 .................................AIR
121.500 ............................ AIR Emer
gency
121.510-136.000 .................................AIR
U.S. Government Band (138-144 MHz)
137.000-144.000 ..................... GOVT, MIL
2-Meter Amateur Band (144-148 MHz)
144.000-148.000 ............................... HAM
VHF-Hi BAND (148-174 MHz)
148.050-150.345  ..............CAP, MAR, MIL
150.775-150.790 .............................. MED
150.815-150.965...

39
U.S. Government Band (406-450 MHz)
406.125-419.975 ................. GOVT, USXX
70-Centimeter Amateur Band (420-450
MHz)
420.000-450.000 ...............................HAM
Low Band (450-470 MHz)
450.050-450.925 ................................RTV
451.025-452.025 ...  IND, OIL, TELM, UTIL
452.0375-453.00 .......... IND, TAXI, TRAN,
TOW, NEWS
453.0125-453.9875 ........................... PUB
454.000 ............................................... OIL
454.025-454.975 ............................... TELB...

40
TROUBLESHOOTING
If you have problems, here are some
suggestions that might help. If none of
these suggestions help, take yourscanner to your local RadioShack
store for assistance.
PROBLEM POSSIBLE CAUSE REMEDY 
Scanner is totally inop-
erative.No power. Make sure you plugged 
the scanner into a work-
ing AC or DC outlet.
Scanner is on but will 
not scan.•
SQUELCH is not cor-
rectly adjusted.
• A channel has been
manually selected.• Adjust SQUELCH 
clockwise.
• Press 
SC AN.
While scanning, the...