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Maritime Telecommunications
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Effective 01 August, 2013, the U. S. Coast Guard terminated its radio guard of the international voice distress, safety and calling frequency 2182 kHz and the international digital selective calling (DSC) distress and safety frequency 2187.5 kHz. Additionally, marine information and weather broadcasts transmitted on 2670 kHz will terminate concurrently. See the safety alert. Note that these frequencies are still available and in use, notwithstanding the Coast Guard's termination of the radio guard. Please contact us if you have any questions.


22 MHz Duplex Channels

ITU Channel No. Coast Transmit kHz Ship Transmit kHz
2201 22,696 22,000
2202   22,699 22,003
2203 22,702  22,006
2204 22,705 22,009
2205   22,708 22,012
2206   22,711 22,015
2207 22,714 22,018
2208 22,717  22,021
2209 22,720  22,024
2210 22,723  22,027
2211   22,726 22,030
2212   22,729 22,033
2213   22,732 22,036
2214 22,735  22,039
2215   22,738 22,042
2216 22,741 22,045
2217 22,744  22,048
2218 22,747  22,051
2219  22,750 22,054
2220   22,753 22,057
2221 22,756 22,060
(Calling)
2222 22,759 22,063
2223  22,762 22,066
2224 22,765  22,069
2225 22,768 22,072
2226  22,771 22,075
2227   22,774 22,078
2228 22,777 22,081
2229   22,780 22,084
2230 22,783  22,087
2231   22,786 22,090
2232 22,789 22,093
2233   22,792 22,096
2234   22,795 22,099
2235   22,798 22,102
2236  22,801 22,105
2237 22,804 22,108
2238  22,807 22,111
2239   22,810 22,114
2240  22,813 22,117
2241  22,816 22,120
2242  22,819 22,123
2243 22,822 22,126
2244   22,825 22,129
2245  22,828 22,132
2246 22,831 22,135
2247 22,834 22,138
2248  22,837 22,141
2249   22,840 22,144
2250   22,843 22,147
2251   22,846 22,150
2252  22,849 22,153
2253  22,852 22,156