[TowerTalk] Distance from an airport and tower height

[Jack]

S 97.15  Station antenna structures.
    (a) Unless the amateur station licensee has received prior approval from
the FCC, no antenna structure, including the  radiating elements, tower,
supports and all appurtenances, may be higher than 61 m (200 feet) above
ground level at its site.
    (b) Unless the amateur station licensee has received prior approval from
the FCC, no antenna structure, at an airport or heliport that is available
for public use and is listed in the Airport Directory of the current
Airman's Information Manual or in either the Alaska or Pacific Airman's
Guide and Chart Supplement; or at an airport or heliport under construction
that is the subject of a notice or proposal on file with the FAA, and
except for military airports, it is clearly indicated that the airport will
be available for public use; or at an airport or heliport that is operated
by the armed forces of the United States; or at a place near any of these
airports or heliports, may be higher than:
      (1) 1 m above the airport elevation for each 100 m from the nearest
runway longer than 1 km within 6.1 km of the antenna structure.
      (2) 2 m above the airport elevation for each 100 m from the nearest
runway shorter than 1 km within 3.1 km of the antenna structure.
      (3) 4 m above the airport elevation for each 100 m from the nearest
landing pad within 1.5 km of the antenna structure.
    (c) An amateur station antenna structure no higher than 6.1 m (20 feet)
above ground level at its site or no higher than 6.1 m above any natural
object or existing manmade structure, other than an antenna structure, is
exempt from the requirements of paragraphs (a) and (b) of this Section.
    (d) Further details as to whether an aeronautical study and/or
obstruction marking and lighting may be required, and specifications for
obstruction marking and lighting, are contained in Part 17 of the FCC
Rules, Construction, Marking, and Lighting of Antenna Structures. To
request approval to place an antenna structure higher than the limits
specified in paragraphs (a), (b), and (c) of this Section, the licensee
must notify the FAA on FAA Form 7460-1 and the FCC on FCC Form 854.
    (e) Except as otherwise provided herein, a station antenna structure may
be erected at heights and dimensions sufficient to accommodate amateur
service communications.  [State and local regulation of a station antenna
structure must not preclude amateur service communications.  Rather, it
must reasonably accommodate such communications and must constitute the
minimum practicable regulation to accomplish the state or local authority's
legitimate purpose. See PRB-1, 101 FCC 2d 952 (1985) for details.]



Jack Hartley
K4WSB / VP2MSB
DXCC Honor RollQCWA OOTC
"Celebrating 50 years in Ham Radio"