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Marine VHF Radio Channels


U.S. VHF CHANNELS
Channel Number Ship Transmit/Receive MHz Use
01A 156.050 Port Operations and Commercial, VTS.  Available only in New Orleans / Lower Mississippi area.
05A 156.250 Port Operations or VTS in the Houston, New Orleans and Seattle areas.
06 156.300 Intership Safety
07A 156.350 Commercial
08 156.400 Commercial (Intership only)
09 156.450 Boater Calling.  Commercial and Non-Commercial.
10 156.500 Commercial
11 156.550 Commercial.  VTS in selected areas.
12 156.600 Port Operations.  VTS in selected areas.
13 156.650 Intership Navigation Safety (Bridge-to-bridge).  Ships >20m length maintain a listening watch on this channel in US waters.
14 156.700 Port Operations.  VTS in selected areas.
15 --/ 156.750 Environmental (Receive only).  Used by Class C EPIRBs.
16 156.800 International Distress, Safety and Calling.  Ships required to carry radio, USCG, and most coast stations maintain a listening watch on this channel.
17 156.850 State Control
18A 156.900 Commercial
19A 156.950 Commercial
20 157.000/ 161.600 Port Operations (duplex)
20A 157.000 Port Operations
21A 157.050 U.S. Coast Guard only
22A 157.100 Coast Guard Liaison and Maritime Safety Information Broadcasts.   Broadcasts announced on channel 16.
23A 157.150 U.S. Coast Guard only
24 157.200/ 161.800 Public Correspondence (Marine Operator)
25 157.250/ 161.850 Public Correspondence (Marine Operator)
26 157.300/ 161.900 Public Correspondence (Marine Operator)
27 157.350/ 161.950 Public Correspondence (Marine Operator)
28 157.400/ 162.000 Public Correspondence (Marine Operator)
63A 156.175 Port Operations and Commercial, VTS.  Available only in New Orleans / Lower Mississippi  area.
65A 156.275 Port Operations
66A 156.325 Port Operations
67 156.375 Commercial.  Used for Bridge-to-bridge communications in lower Mississippi River.  Intership only.
68 156.425 Non-Commercial
69 156.475  Non-Commercial
70 156.525 Digital Selective Calling (voice communications not allowed)
71 156.575 Non-Commercial
72 156.625 Non-Commercial (Intership only)
73 156.675 Port Operations
74 156.725 Port Operations
77 156.875 Port Operations (Intership only)
78A 156.925 Non-Commercial
79A 156.975 Commercial.  Non-Commercial in Great Lakes only
80A 157.025 Commercial.  Non-Commercial in Great Lakes only
81A 157.075 U.S. Government only - Environmental protection operations.
82A 157.125 U.S. Government only
83A 157.175 U.S. Coast Guard only
84 157.225/ 161.825 Public Correspondence (Marine Operator)
85 157.275/ 161.875 Public Correspondence (Marine Operator)
86 157.325/ 161.925 Public Correspondence (Marine Operator)
87 157.375 Public Correspondence (Marine Operator)
88A 157.425 Commercial, Intership only.
AIS 1 161.975 Automatic Identification System (AIS)
AIS 2 162.025 Automatic Identification System (AIS)

(This chart is also available in text or Excel versions)

VHF Maritime Spectrum Chart


NOAA Weather Radio Frequencies


Channel Frequency (MHz)

WX1

162.550

WX2

162.400

WX3

162.475

WX4

162.425

WX5

162.450

WX6

162.500

WX7

162.525

See the NOAA Weather Radio Homepage for more information.

Additional Information, Frequencies, & Charts

Frequencies are in MHz. Modulation is 16KF3E or 16KG3E.

Note that the letter "A" indicates simplex use of the ship station transmit side of an international duplex channel, and that operations are different than international operations on that channel. Some VHF transceivers are equipped with an "International - U.S." switch for that purpose. "A" channels are generally only used in the United States, and use is normally not recognized or allowed outside the U.S. The letter "B" indicates simplex use of the coast station transmit side of an international duplex channel. The U.S. does not currently use "B" channels for simplex communications in this band.

Boaters should normally use channels listed as Non-Commercial. Channel 16 is used for calling other stations or for distress alerting. Channel 13 should be used to contact a ship when there is danger of collision. All ships of length 20m or greater are required to guard VHF channel 13, in addition to VHF channel 16, when operating within U.S. territorial waters. Users may be fined by the FCC for improper use of these channels. See Marine Radio Watch Requirements for further information.

This information was derived from USCG Navigation Center website.

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