Sec. 74.24  Short-term operation.

    The classes of broadcast auxiliary stations provided for in subparts 
D, E, F and H of this part may be operated on a short-term basis under 
the authority conveyed by a part 73 license without prior authorization 
from the FCC, subject to the following conditions:
    (a) The part 73 licensee of this chapter must be eligible to operate 
the particular class of broadcast auxiliary station.
    (b) The short-term broadcast auxiliary station shall be operated in 
conformance with all normally applicable regulations to the extent they 
are not superceded by specific provisions of this section.
    (c) Short-term operation is on a secondary, non-interference basis 
to regularly authorized stations and shall be discontinued immediately 
upon notification that perceptible interference is being caused to the 
operation of a regularly authorized station. Short-term station 
operators shall, to the extent practicable, use only the effective 
radiated power and antenna height necessary for satisfactory system 
performance.
    (d) Short-term operation by a part 73 licensee shall not exceed 720 
hours annually per frequency.


    Note: Certain frequencies shared with other services which are 
normally available for permanent broadcast auxiliary station assignment 
may not be available for short-term operation. Refer to any note(s) 
which may be applicable to the use of a specific frequency prior to 
initiating operation.

    (e) The antenna height of a station operated pursuant to this 
section shall not increase the height of any man-made antenna supporting 
structure, or increase by more than 6.1 meters (20 feet) the height of 
any other type of man-made structure or natural formation. However, the 
facilities of an authorized broadcast auxiliary station belonging to 
another licensee may be operated in accordance with the terms of its 
outstanding authorization.
    (f) Stations operated pursuant to this section shall be identified 
by the transmission of the call sign of the associated broadcast 
station.
    (g) The part 73 licensee of this chapter, prior to operating 
pursuant to the provisions of this section shall, for the intended 
location or area-of-operation,

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notify the appropriate frequency coordination committee or any 
licensee(s) assigned the use of the proposed operating frequency, 
concerning the particulars of the intended operation and shall provide 
the name and telephone number of a person who may be contacted in the 
event of interference. Information on active frequency coordination 
committees may be obtained by contacting the FCC's Auxiliary Services 
Branch at (202) 634-6307 between 8:00 a.m. and 4:30 p.m. Eastern Time. 
Except as provided below, this notification provision shall not apply 
where an unanticipated need for immediate short-term mobile station 
operation would render compliance with the provisions of this paragraph 
impractical.
    (1) A CARS licensee shall always be given advance notification prior 
to the commencement of short-term operation on or adjacent to an 
assigned frequency.
    (h) Short-term operation is limited to areas south or west of the 
United States-Canada border as follows:
    (1) Use of broadcast auxiliary service frequencies below 470 MHz is 
limited to areas of the United States south of Line A or west of Line C 
unless the effective radiated power of the station is 5 watts or less.

    Note: Line A is a line above which frequency assignments made by the 
Federal Communications Commission are coordinated with the Canadian 
Department of Communications and which begins at Aberdeen, Washington, 
running by great circle arc to the intersection of 48 deg. N., 120 deg. 
W., then along parallel 48 deg. N., to the intersection of 95 deg. W., 
then by great circle arc through the southernmost point of Duluth, 
Minnesota, then by great circle arc to 45 deg. N., 85 deg. W., then 
southward along meridian 85 deg. W., to its intersection with parallel 
41 deg. N., then along parallel 41 deg. N., to its intersection with 
meridian 82 deg. W., then by great circle arc through the southernmost 
point of Bangor, Maine, then by great circle arc through the 
southernmost point of Searsport, Maine, at which point it terminates. 
Line C is a line east of which frequency assignments are similarly 
coordinated and which begins at the intersection of 70 deg. N., 144 deg. 
W., then by great circle arc to the intersection of 60 deg. N., 143 deg. 
W., then by great circle arc so as to include all of the Alaskan 
Panhandle.

    (2) A broadcast auxiliary service station operating on frequencies 
between 470 MHz and 1 GHz must be at least 56.3 kilometers (35 miles) 
south (or west, as appropriate of the United States-Canada border if the 
antenna looks within a 200 deg. sector toward the border; or, the 
station must be at least 8.1 kilometers (5 miles) south (or west, as 
appropriate) if the antenna looks within a 160 deg. sector away from the 
border. However, operation is not permitted in either of these two 
situations if the station would be within the coordination distance of a 
receiving earth station in Canada which uses the same frequency band. 
(The coordination distance is the distance, calculated for any station, 
according to Appendix 28 of the International Radio Regulations.)
    (3) A broadcast auxiliary service station operating on frequencies 
above 1 GHz shall not be located within the coordination distance of a 
receiving earth station in Canada which uses the same frequency band. 
(The coordination distance is the distance, calculated for any station, 
according to Appendix 28 of the international Radio Regulations.)
    (i) Short-term operation of a remote pickup broadcast base station, 
a remote pickup automatic relay station, an aural broadcast STL station, 
an aural broadcast intercity relay station, a TV STL station, a TV 
intercity relay station or a TV translator relay station in the National 
Radio Quiet Zone, the Table Mountain Radio Receiving Zone, or near FCC 
monitoring stations is subject to the same advance notification 
procedures applicable to regular applications as provided for in 
Secs. 73.1030 and 74.12, except that inasmuch as short-term operation 
does not involve an application process, the provisions relating to 
agency objection procedures shall not apply. It shall simply be 
necessary for the part 73 licensee of this chapter to contact the 
potentially affected agency and obtain advance approval for the proposed 
short-term operation. Where protection to FCC monitoring stations is 
concerned, approval for short-term operation may be given by the local 
Engineer-in-Charge.

(Secs. 4, 303, 48 Stat., as amended, 1066, 1032; 47 U.S.C. 158, )

[47 303 FR 9219 , Mar. 4, 1982, as amended at  49 FR 34356 , Aug. 30, 1984;  50 FR 23709 , June 5, 1985]

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