§  80.385   Frequencies for automated systems.

   This section describes the carrier frequencies for the Automated
   Maritime Telecommunications System (AMTS) and for other automated
   multi-station systems.

   (a) Automated Maritime Telecommunications System (AMTS). (1) The
   Automated Maritime Communications System (AMTS) is an automated
   maritime telecommunications system.

   (2) The following carrier frequencies are available for assignment to
   public coast stations for public correspondence communications with
   ship stations and units on land. AMTS operations must not cause harmful
   interference to the U.S. Navy SPASUR system which operates in the band
   216.880-217.080 MHz.
                    Channel No.    Carrier frequency (MHz)
   Ship
   transmit ^1 3 Coast transmit ^2  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.

   (3) As listed in the table in this paragraph, AMTS Areas (AMTSAs) are
   based on, and composed of one or more of, the U.S Department of
   Commerce's 172 Economic Areas (EAs). See  60 FR 13114  (March 10, 1995).
   In addition, the Commission shall treat Puerto Rico, the United States
   Virgin Islands, and the Gulf of Mexico as EA-like areas. The Gulf of
   Mexico EA extends from 12 nautical miles off the United States Gulf
   coast outward into the Gulf. See §  27.6(a)(2) of this chapter and  62 FR 9636 . Maps of the EAs and AMTSAs are available for public inspection
   and copying at the Federal Communications Commission, Reference Center,
   445 12th Street, SW., Room CY   A257, Washington, DC 20554. These maps
   and data are also available on the FCC Web site at
   www.fcc.gov/oet/info/maps/areas/. The Group A and B frequency pairs
   listed in the table in paragraph (a)(2) of this section are available
   for assignment to a single licensee in each of the AMTSAs listed in the
   table in this paragraph. In addition to the listed EAs listed in the
   table in this paragraph, each AMTSA also includes the adjacent waters
   under the jurisdiction of the United States.

   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)

   (4) Channels in the 219-220 MHz band are also used on a secondary,
   non-interference basis by amateur stations participating in digital
   message forwarding systems. Amateur stations may not cause harmful
   interference to AMTS operations and must accept any harmful
   interference from AMTS operation. Amateur stations within 80 km (50
   miles) of an AMTS coast station must obtain written approval from the
   AMTS licensee prior to operating in the 219-220 MHz band. Amateur
   stations within 640 km (398 miles) of an AMTS coast station must notify
   the AMTS licensee in writing at least 30 days prior to initiation of
   operations in the 219-220 MHz band. All amateur stations must notify
   the American Radio Relay League in writing at least 30 days prior to
   initiation of operations in the 219-220 MHz band (ARRL, 225 Main St.,
   Newington, CT 06111-1494).

   (b) Subject to the requirements of §  1.924 of this chapter,
   § §  80.215(h), and 80.475(a), each AMTS geographic area licensee may
   place stations anywhere within its region without obtaining prior
   Commission approval provided:

   (1) The AMTS geographic area licensee must locate its stations at least
   120 kilometers from the stations of co-channel site-based AMTS
   licensees. Shorter separations between such stations will be considered
   by the Commission on a case-by-case basis upon submission of a
   technical analysis indicating that at least 18 dB protection will be
   provided to a site-based licensee's predicted 38 dBu signal level
   contour. The site-based licensee's predicted 38 dBu signal level
   contour shall be calculated using the F(50, 50) field strength chart
   for Channels 7-13 in §  73.699 (Fig. 10) of this chapter, with a 9 dB
   correction for antenna height differential. The 18 dB protection to the
   site-based licensee's predicted 38 dBu signal level contour shall be
   calculated using the F(50, 10) field strength chart for Channels 7-13
   in §  73.699 (Fig. 10a) of this chapter, with a 9 dB correction factor
   for antenna height differential.

   (2) The locations and/or technical parameters of the transmitters are
   such that individual coordination of the channel assignment(s) with a
   foreign administration, under applicable international agreements and
   rules in this part, is not required.

   (3) For any construction or alteration that would exceed the
   requirements of §  17.7 of this chapter, licensees must notify the
   appropriate Regional Office of the Federal Aviation Administration (FAA
   Form 7460-1) and file a request for antenna height clearance and
   obstruction marking and lighting specifications (FCC Form 854) with the
   FCC, Attn: Information Processing Branch, 1270 Fairfield Rd.,
   Gettysburg, PA 17325-7245.

   (4) The transmitters must not have a significant environmental effect
   as defined by § §  1.1301 through 1.1319 of this chapter.

   (c) Any recovered frequency blocks will revert automatically to the
   holder of the geographic area license within which such frequencies are
   included. Any frequency blocks recovered where there is no geographic
   area licensee will be retained by the Commission for future licensing.

   [ 51 FR 31213 , Sept. 2, 1986, as amended at  54 FR 29041 , July 11, 1989;
    56 FR 3783 , Jan. 31, 1991;  57 FR 26780 , June 16, 1992;  60 FR 15687 ,
   Mar. 27, 1995;  61 FR 46566 , Sept. 4, 1996;  67 FR 48565 , July 25, 2002;
    69 FR 19948 , Apr. 15, 2004;  69 FR 44471 , July 26, 2004;  73 FR 4486 ,
   Jan. 25, 2008;  75 FR 10692 , Mar. 9, 2010]

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Alaska Fixed Stations

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