(a) The frequencies assignable to aircraft data link land test stations are 131.450 MHz, 131.550 MHz, 131.725 MHz, 131.825 MHz, 136.850 MHz, 136.900 MHz, 136.925 MHz, 136.950 MHz, and 136.975 MHz. Interstitial frequencies separated by 8.33 kilohertz from these frequencies may also be assigned.
(b) Before submitting an application for an aircraft data link land test station, an applicant must obtain written permission from the licensee of the aeronautical enroute stations serving the areas in which the aircraft data link land test station will operate on a co-channel basis. The Commission may request an applicant to provide documentation as to this fact.
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(f) The Commission will assign frequency 1090 MHz for use by aeronautical utility mobile stations for ground vehicle identification and collision avoidance after coordination with the
(1) The applicant must notify the appropriate
(2) Eligibility is restricted to airport operators holding an FAA Airport Operating Certificate, and other entities approved by the
(3) No more than two hundred 1090 MHz aeronautical utility mobile stations will be authorized at one airport;
(4) Licenses are limited to only those locations that are within the vicinity of an FAA ASDE-X multilateration system or ADS-B equipment, and/or where the primary purpose for seeking transmit authorization is to provide surface data to aircraft and air traffic control authorities.
(5) Message transmission rates are limited as indicated in the table below:
ADS-B Message Rate when moving Rate when stationary Surface Position Every 0.4 to 0.6 Every 4.8 to 5.2 seconds. Message (Types seconds 5, 6, 7, 8) Aircraft Every 4.8 to 5.2 Every 4.8 to 5.2 seconds. Operational seconds Status (Type 31) Aircraft Every 4.8 to 5.2 Every 9.8 to 10.2 seconds. Identification seconds and Type (Type 2)
a. Redesignating paragraph (b)(9), (b)(7) and (8) as paragraphs (b)(7), (b)(8) and (9) respectively;
b. Adding new paragraphs (b)(10) through (b)(14); and
c. Revising paragraphs (c)(1) and (c)(2) introductory text .
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(b) * * *
(10) 2700-2900 MHz: Non-Government land-based radars may be licensed.
(11) 5000-5250 MHz: This band is to be used for the operation of the international standard system (microwave landing system).
(12) 9000-9200 MHz: This band is available to land-based radars. Stations operating in this band may receive interference from stations operating in the radiolocation service.