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.
(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. ------------------------------------------------------------------------
Carrier frequency (MHz)
--------------------------------------
Channel No. Ship Coast
transmit \1 transmit Group
3\ \2\------------------------------------------------------------------------101.............................. ........... 216.0125 D102.............................. ........... 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 C122.............................. ........... 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 B142.............................. 219.0375 217.0375143.............................. 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 217.2375151.............................. 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 A162.............................. 219.5375 217.5375163.............................. 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 Sec. 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, 462 (Mid-Atlantic)......................... 24, 26-34, 37, 38, 40, 41,
1743 (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, 1094 (Mississippi River).................... 160-165 147, 166-1705 (Great Lakes).......................... 1726 (Southern Pacific)..................... 171 110-112, 114-115, 121,
126, 128, 129, 135-146, 148-
1597 (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 Sec. 1.924 of this chapter, Sec. Sec. 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 Sec. 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 Sec. 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 Sec. 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 Sec. Sec. 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]
Alaska Fixed Stations