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Police Scanners

Many police use trunk radio systems, some are encrypted. Some digital trunk scanners cannot receive some trunk radios. Analog or conventional radios are still used by some police, interagency communications, and first responders.

Conventional scanners can receive marine radio, railroads, the National Weather Service (NWS), a few businesses, amateur radio, and the public. These systems use narrow band frequency modulation (NBFM), Most channels are simplex, use the same frequency for transmit and receive. Some channels are duplex (receive and transmit on different frequencies). Most conventional scanners also receive amplitude modulated (AM) aircraft radios.

Radio Systems
System Notes
Simplex Transmit/Receive on same channel.
Duplex Transmit/Receive on different channels.
Trunk Multiple channels and Systems.

Also see Police 10 Codes.

Conventional Scanner
Frequency Bands

Mid Band (VHF)
137 - 174 MHz

138 - 174 MHz
Tugboat Locomotive
Use MHz
Government Radios 137 - 144
Amateur Radio (2 meter HAM) 144 - 148
Police, Inter-Agency, Fire,
Ground/Air Ambulance, Hospital,
Business 		148 - 156
Marine VHF Radios
US Coast Guard, waterway traffic,
locks, ports, docks, dock operations,
ship to ship, ship to shore
(see Channels and Frequencies) 		156 - 157.5
Railroad Radios
Dispatcher, Train, walkie-talkies,
Amtrak Police, Yard Operations
(see Channels and Frequencies) 		159.8 - 161.6
National Weather Service
Channel depends on region 		Ch 1 - 162.400
Ch 2 - 162.425
Ch 2 - 162.450
Ch 4 - 162.475
Ch 5 - 162.500
Ch 6 - 162.525
Ch 7 - 162.550
Public Use 164 - 174


Lower Mid Band (VHF)
88 - 137 MHz

Use MHz
FM Commercial Radio
Wide Band Frequency Modulation 		88 - 108
aircraft
Aircraft Radios
Amplitude Modulated (AM) 		108 - 137


Low Band (VHF)
30 - 54 MHz

20-54 MHz
Use Frequency / Moduation
Police & Public Services 30 - 50 MHz
Amateur Radio
6 meters HAM 		50 - 54 MHz


Upper High Frequency (HF)
Short Wave
Citizens Band (CB's) 26.965 - 27.405 MHz
Amplitude Modulation (AM)
Amateur Radio
10 meters HAM 		29.0 -29.7 MHz
Single-Side Band (SSB)


High Band (UHF)
380 - 512 MHz

380 - 512 MHz
Use MHz
Airport & Aircraft Radios 380 - 410
Federal & State Government 410 - 440
Amateur Radio (70 cm HAM) 440 - 450
Government Trunk Radio 470 - 512
Broadcast TV UHF 470 - 608


CopRadar.com
Police Radar Information Center
Police Scanners
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