A General Guide to Scanning
26
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To help decide which frequency ranges to scan, use the 
following listing of the typical 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
, available at your 
local RadioShack store.
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70-Centimeter Amateur Band 420.000 – 450.000
FM Repeaters
Land-Mobile “Paired” 
Frequencies
450.000 – 470.000
Base Stations 451.025 – 454.950
Mobile Units 456.025 – 459.950
Repeater Units 460.025 – 464.975
Control Stations 
±
465.025– 469.975
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AIR Aircraft
BIFC Boise (ID) Interagency Fire Cache
BUS Business
CAP Civil Air Patrol
CCA Common Carrier
CSB Conventional Systems
CTSB Conventional/ Trunked Systems
FIRE Fire Department
HAM Amateur (Ham) Radio
GOVT Federal Government
GMR General Mobile Radio
GTR General Trunked
IND Industrial Services
(Manufacturing, Construction, Farming, Forest 
Products)
MAR Military Amateur Radio
MARI
Maritime Limited Coast
(Coast Guard, Marine Telephone,
Shipboard Radio, Private Stations)
MARS Military Affiliate Radio System
MED Emergency/Medical Services
MIL U.S. Military
±
"016'"
±
"
Remote control stations and mobile 
units operate at 5 MHz higher than 
their associated base stations and 
relay repeater units.
20-424.fm  Page 26  Monday, September 9, 2002  9:44 AM