73.816 Antennas

Summary

Specific rules about antennas that can be used. Most LPFMs with the exception of those that are used for a public safety travelers information station application or those that are operating under a second-adjacent channel waiver must operate with non-directional antennas.

Text of Current Rule

(a) Permittees and licensees may employ nondirectional antennas with horizontal only polarization, vertical only polarization, circular polarization or elliptical polarization.

(b) Directional antennas generally will not be authorized and may not be utilized in the LPFM service, except as provided in paragraph (c) of this section.

(c)(1) Public safety and transportation permittees and licensees, eligible pursuant to § 73.853(a)(ii), may utilize directional antennas in connection with the operation of a Travelers’ Information Service (TIS) provided each LPFM TIS station utilizes only a single antenna with standard pattern characteristics that are predetermined by the manufacturer. Public safety and transportation permittees and licensees may not use composite antennas (i.e., antennas that consist of multiple stacked and/or phased discrete transmitting antennas).

(2) LPFM permittees and licensees proposing a waiver of the second-adjacent channel spacing requirements of Section 73.807 may utilize directional antennas for the sole purpose of justifying such a waiver.

(d) LPFM TIS stations will be authorized as nondirectional stations. The use of a directional antenna as provided for in paragraph (c) of this section will not be considered in the determination of compliance with any requirements of this part.

Rule History

Adopted in Original Order.
Amended in Sep 2000 Order.
Amended in Nov 2012 Order.

(a) Directional antennas will not be authorized in the LPFM service.

(a) Permittees and licensees may employ nondirectional antennas with horizontal only polarization, vertical only polarization, circular polarization or elliptical polarization.

(b) Permittees and licensees may employ nondirectional antennas with horizontal only polarization, vertical only polarization, circular polarization or elliptical polarization. b) Directional antennas generally will not be authorized and may not be utilized in the LPFM service, except as provided in subsection paragraph (c) of this section.

(c)(1) Public safety and transportation permittees and licensees, eligible pursuant to § 73.853(a)(ii) of this part, may utilize directional antennas in connection with the operation of a Travelers’ Information Service (TIS) provided each LPFM TIS station utilizes only a single antenna with standard pattern characteristics that are predetermined by the manufacturer. In no event may Public safety and transportation permittees and licensees may not use composite antennas (i.e. antennas that consist of multiple stacked and/or phased discrete transmitting antennas) and/or transmitters be employed.

(2) LPFM permittees and licensees proposing a waiver of the second-adjacent channel spacing requirements of Section 73.807 may utilize directional antennas for the sole purpose of justifying such a waiver.

(d) LPFM TIS stations will be authorized as nondirectional stations. The use of a directional antenna as provided for in subsection (c) will not be considered in the determination of compliance with any requirements of this part.