This section describes the carrier frequencies for the Automated Maritime Telecommunications System (AMTS) and for other automated multi-station systems.
Channel No. | Carrier frequency (MHz) | ||
Ship transmit1 3 | Coast transmit2 | Group | |
101 | 216.0125 | D | |
102 | 216.0375 | ||
103 | 216.0625 | ||
104 | 216.0875 | ||
105 | 216.1125 | ||
106 | 216.1375 | ||
107 | 216.1625 | ||
108 | 216.1875 | ||
109 | 216.2125 | ||
110 | 216.2375 | ||
111 | 216.2625 | ||
112 | 216.2875 | ||
113 | 216.3125 | ||
114 | 216.3375 | ||
115 | 216.3625 | ||
116 | 216.3875 | ||
117 | 216.4125 | ||
118 | 216.4375 | ||
119 | 216.4625 | ||
120 | 216.4875 | ||
121 | 216.5125 | C | |
122 | 216.5375 | ||
123 | 216.5625 | ||
124 | 216.5875 | ||
125 | 216.6125 | ||
126 | 216.6375 | ||
127 | 216.6625 | ||
128 | 216.6875 | ||
129 | 216.7125 | ||
130 | 216.7375 | ||
131 | 216.7625 | ||
132 | 216.7875 | ||
133 | 216.8125 | ||
134 | 216.8375 | ||
135 | 216.8625 | ||
136 | 216.8875 | ||
137 | 216.9125 | ||
138 | 216.9375 | ||
139 | 216.9625 | ||
140 | 216.9875 | ||
141 | 219.0125 | 217.0125 | B |
142 | 219.0375 | 217.0375 | |
143 | 219.0625 | 217.0625 | |
144 | 219.0875 | 217.0875 | |
145 | 219.1125 | 217.1125 | |
146 | 219.1375 | 217.1375 | |
147 | 219.1625 | 217.1625 | |
148 | 219.1875 | 217.1875 | |
149 | 219.2125 | 217.2125 | |
150 | 219.2375 | 217.2375 | |
151 | 219.2625 | 217.2625 | |
152 | 219.2875 | 217.2875 | |
153 | 219.3125 | 217.3125 | |
154 | 219.3375 | 217.3375 | |
155 | 219.3625 | 217.3625 | |
156 | 219.3875 | 217.3875 | |
157 | 219.4125 | 217.4125 | |
158 | 219.4375 | 217.4375 | |
159 | 219.4625 | 217.4625 | |
160 | 219.4875 | 217.4875 | |
161 | 219.5125 | 217.5125 | A |
162 | 219.5375 | 217.5375 | |
163 | 219.5625 | 217.5625 | |
164 | 219.5875 | 217.5875 | |
165 | 219.6125 | 217.6125 | |
166 | 219.6375 | 217.6375 | |
167 | 219.6625 | 217.6625 | |
168 | 219.6875 | 217.6875 | |
169 | 219.7125 | 217.7125 | |
170 | 219.7375 | 217.7375 | |
171 | 219.7625 | 217.7625 | |
172 | 219.7875 | 217.7875 | |
173 | 219.8125 | 217.8125 | |
174 | 219.8375 | 217.8375 | |
175 | 219.8625 | 217.8625 | |
176 | 219.8875 | 217.8875 | |
177 | 219.9125 | 217.9125 | |
178 | 219.9375 | 217.9375 | |
179 | 219.9625 | 217.9625 | |
180 | 219.9875 | 217.9875 |
1 Ship transmit frequencies in Groups C and D are not authorized for AMTS use.
2 Coast station operation on frequencies in Groups C and D are not currently assignable and are shared on a secondary basis with the Low Power Radio Service in part 95 of this chapter. Frequencies in the band 216.750-217.000 MHz band are available for low power point-to-point network control communications by AMTS coast stations under the Low Power Radio Service (LPRS). LPRS operations are subject to the conditions that no harmful interference is caused to the United States Navy's SPASUR radar system (216.88-217.08 MHz) or to TV reception within the Grade B contour of any TV channel 13 station or within the 68 dBu predicted contour of any low power TV or TV translator station operating on channel 13.
3 Ship transmit frequencies in Groups A and B are permitted to provide mobile-to-mobile communications where the written consent of all affected licensees is obtained.
AMTS areas (AMTSAs)
AMTSAs | EAs |
1 (Northern Atlantic) | 1-5, 10 9, 11-23, 25, 42, 46 |
2 (Mid-Atlantic) | 24, 26-34, 37, 38, 40, 41, 174 |
3 (Southern Atlantic) | 35, 36, 39, 43-45, 47-53, 67-107, 113, 116-120, 122-125, 127, 130-134, 176 6-8, 54-66, 108, 109 |
4 (Mississippi River) | 160-165 147, 166-170 |
5 (Great Lakes) | 172 |
6 (Southern Pacific) | 171 110-112, 114-115, 121, 126, 128, 129, 135-146, 148-159 |
7 (Northern Pacific) | |
8 (Hawaii) | |
9 (Alaska) | |
10 (Mountain) |
47 C.F.R. §80.385