Goto Section: 73.873 | 73.877 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 73.875 Modification of transmission systems.
The following procedures and restrictions apply to licensee
modifications of authorized broadcast transmission system facilities.
(a) The following changes are prohibited:
(1) Those that would result in the emission of signals outside of the
authorized channel exceeding limits prescribed for the class of
(2) Those that would cause the transmission system to exceed the
equipment performance measurements prescribed in § 73.508.
(b) The following changes may be made only after the grant of a
construction permit application on FCC Form 318.
(1) Any construction of a new tower structure for broadcast purposes,
except for replacement of an existing tower with a new tower of
identical height and geographic coordinates.
(2) Any change in station geographic coordinates, including coordinate
corrections and any move of the antenna to another tower structure
located at the same coordinates.
(3) Any change in antenna height more than 2 meters above or 4 meters
below the authorized value.
(4) Any change in channel.
(c) The following LPFM modifications may be made without prior
authorization from the Commission. A modification of license
application (FCC Form 319) must be submitted to the Commission within
10 days of commencing program test operations pursuant to § 73.1620. For
applications filed pursuant to paragraph (c)(1) of this section, the
modification of license application must contain an exhibit
demonstrating compliance with the Commission's radiofrequency radiation
guidelines. In addition, for applications filed solely pursuant to
paragraphs (c)(1) or (2) of this section, where the installation is on
or near an AM tower, as defined in § 1.30002, an exhibit demonstrating
compliance with § 1.30003 or § 1.30002, as applicable, is also required.
(1) Replacement of an antenna with one of the same or different number
of antenna bays, provided that the height of the antenna radiation
center is not more than 2 meters above or 4 meters below the authorized
values. Program test operations at the full authorized ERP may commence
immediately upon installation pursuant to § 73.1620(a)(1).
(2) Replacement of a transmission line with one of a different type or
length which changes the transmitter operating power (TPO) from the
authorized value, but not the ERP, must be reported in a license
modification application to the Commission.
(3) Changes in the hours of operation of stations authorized pursuant
to time-share agreements in accordance with § 73.872.
[ 65 FR 7640 , Feb. 15, 2000, as amended at 78 FR 66298 , Nov. 5, 2013]
Goto Section: 73.873 | 73.877
Goto Year: 2020 |
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