Sec. 101.129  Transmitter location.

    (a) The applicant must determine, prior to filing an application for 
a radio station authorization, that the antenna site specified therein 
is adequate to render the service proposed. In cases of questionable 
antenna locations, it is desirable to conduct propagation tests to 
indicate the field intensity which may be expected in the principal 
areas or at the fixed points of communication to be served, particularly 
where severe shadow problems may be expected. In considering 
applications proposing the use of such locations, the Commission may 
require site survey tests to be made pursuant to a developmental 
authorization in the particular service concerned. In such cases, 
propagation tests should be conducted in accordance with recognized 
engineering methods and should be made with a transmitting antenna 
simulating, as near as possible, the proposed antenna installation. Full 
data obtained from such surveys and its analysis, including a 
description of the methods used and the name, address and qualifications 
of the engineer making the survey, must be supplied to the Commission.
    (b) Antenna structures should be so located and constructed as to 
avoid making them hazardous to air navigation. (See part 17 of this 
chapter for provisions relating to antenna structures.) Such 
installation must be maintained in good structural condition together 
with any required painting or lighting.