§ 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

   ^1Ship transmit frequencies in Groups C and D are not authorized for AMTS
   use.

   ^2Coast 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.

   ^3Ship 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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