FCC Adopts Antenna Computer Modeling Rules for FM/LPFM Directional Antennas

The FCC adopted a Report and Order that gives FM and Low Power FM (LPFM) applicants using directional antennas the option of verifying the directional pattern through the use of computer modeling.

Some FM stations use directional antennas in order to prevent interference to other stations or to keep the signal from radiating outside the station’s authorized service area. When seeking a license, FM radio stations using directional antennas are required to provide measurements of the radiated signal to verify their directional pattern. To do this, stations must either build a full-size mockup of the antenna or build a scale model. These measurements can involve considerable expense to the applicant.

Today’s action gives FM and LPFM broadcasters the option to verify directional antenna patterns by using computer modeling prepared by the antenna manufacturer rather than real world measurements, after the model is initially verified for accuracy. The action will provide regulatory relief for both antenna manufacturers and FM broadcasters while maintaining the integrity of the Commission’s licensing requirements.

Update: New rules effective November 10, 2022 upon publication in the Federal Register. See Public Notice here.

FCC Affirms No Reserved Channels for White Spaces & Wireless Mics

In this order, the FCC denied the Petitions for Reconsideration filed by Sennheiser Electronic Corporation and Shure Incorporated requesting reconsideration and reversal of a Commission Report and Order that
declined to adopt rules proposed in a 2015 Notice of Proposed Rulemaking to preserve a vacant channel in the television bands for use by white space devices and wireless microphones and
terminated the proceeding.

More LMS Online Filing

As part of its ongoing effort to update the Commission’s application filing systems, the Media Bureau is pleased to announce the transition of additional filings to the LMS online electronic system.

Commencing May 17, 2022, the public will be required to submit the following filings using LMS:

  • FM Engineering Special Temporary Authorizations (STAs)
  • Request for Silent STA
  • Extension of STA – Silent
  • Extension of STA – Engineering
  • Suspension of Operations Notification
  • Resumption of Operations
  • AM/FM Digital Notification
  • Modulation Dependent Carrier Level (MDCL) Notification
  • Change of Primary Station Notification
  • Tolling Notification
  • Reduced Power Notification
  • Withdraw Pending Applications

Further new features include the ability to search by frequency or channel using the “Frequency/Channel” option in Public Search, and the addition of existing STA and silent notification records to LMS from the Consolidated Database System (CDBS).

See Public Notice below for additional details and instructions.