RadioShack Pro 92b Handheld Scanner Owners Manual

61A General Guide to Scanning
GUIDE TO THE ACTION BANDS 
Typical Band Usage
Primary Usage
As a general rule, most of the radio activity is concentrat-
ed on the following frequencies:
VHF Band
UHF Band
VHF Band
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 144.000–148.00 MHz
High Range 148.00–174.00 MHz
UHF Band
Military Aircraft 380.00–384.00 MHz
U.S. Government 406.00–420.00 MHz
70-cm Amateur 420.00–450.00 MHz
Low Range 450.00–470.00 MHz...

62
A General Guide to Scanning
Note:
 Remote control stations and mobile units operate
at 5 MHz higher than their associated base stations and
relay repeater units.
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
,...

63A General Guide to Scanning
WTHR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Weather
HIGH FREQUENCY (HF)
10-Meter Amateur Band
29.000–29.700  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  HAM
VERY HIGH FREQUENCY (VHF)
VHF Low Band — (29–50 MHz — in 5 kHz steps)
29.900–30.550  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
30.580–31.980  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB
32.000–32.990  . . . . ....

64
A General Guide to Scanning
152.030–152.240  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
152.270–152.480  . . . . . . . . . . . . . . . . . . . . . . . IND, TAXI, BUS
152.510–152.840  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
152.870–153.020  . . . . . . . . . . . . . . . . . . . . . . . . . . .  IND, MOV
153.035–153.725  . . . . . . . . . . . . . . . . . . . . . . . . IND, OIL, UTIL
153.740–154.445  . . . . . . . . . . . . . . . . . . . . . . . . . . ....

65A General Guide to Scanning
460.0125–460.6375  . . . . . . . . . . . . . . . . . . . .  FIRE, POL, PUB
460.650–462.175  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS
462.1875–462.450  . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND
462.4625–462.525  . . . . . . . . . . . . . . . . . IND, OIL, TELM, UTIL
462.550–462.925  . . . . . . . . . . . . . . . . . . . . . . . . . . . GMR, BUS
462.9375–463.1875  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED...

66
Troubleshooting
To convert MHz to kHz, multiply the number of mega-
hertz by 1,000:
30.62 (MHz) ´
 1000  = 30,620 kHz
To convert from kHz to MHz, divide the number of kilo-
hertz by 1,000:
127,800 (kHz) ¸
 1000 = 127.8 MHz
To convert MHz to meters, divide 300 by the number of
megahertz:
300 ¸
 50 MHz = 6 meters
ˆTroubleshooting
If you have problems with your scanner, here are some
suggestions that might help you eliminate the problem. If
they do not, take your scanner to your local Ra-
dioShack store...

67Troubleshooting
RESETTING/INITIALIZING THE 
SCANNER
If the scanner’s display locks up or does not work prop-
erly after you connect a power source, you might need to
reset or initialize it.
Important:
 If you have problems with the scanner, first
try to reset it to retain all memory. If that does not work,
you can initialize the scanner; however, initializing clears
all information stored in the scanner’s memory.
Resetting the Scanner
1. Turn off the scanner, then turn it on again.
Scanner is 
totally...

68
Care
2. Insert a pointed object, such as a straightened
paper clip, into the reset opening on the side of the
scanner. Then gently press and release the reset
button inside the opening and the backlight lights.
Note:
 Pressing 
RESET does not clear the scanner’s
memory.
Initializing the Scanner
Important:
 This procedure clears all information you
stored in the scanner’s memory. Initialize the scanner
only when you are sure the scanner is not working prop-
erly.
1. Turn off the scanner, then turn it...

69Specifications
• Handle the scanner gently and carefully. Do not
drop it.
• Keep the scanner away from dust and dirt.
• Wipe the scanner with a damp cloth occasionally to
keep it looking new.
Modifying or tampering with the scanner’s internal com-
ponents can cause a malfunction and might invalidate its
warranty and void your FCC authorization to operate it. If
your scanner is not performing as it should, take it to
your local RadioShack store for assistance. 
ˆSpecifications
Frequency Coverage:
Ham...

70
Specifications
806–960 MHz  ...............................................  0.7 m
V
AM:
29–54 MHz  ......................................................  1 m
V
108–136.9875 MHz  .........................................  1 m
V
137–174 MHz  ...............................................  1.5 m
V
380–512 MHz  ..................................................  2 m
V
806–960 MHz  ..................................................  2 m
V
Selectivity:
–6 dB...