Topics
- 2025 BEITC Proceedings
- AI Applications: Sports, Newsrooms and Archives
- Making ATSC 3.0 Better than Ever
- AM Radio: Measurements and Modeling
- Making Radio Better Than Ever
- Brigital: Integrating Broadcast and Digital
- Production Advancements: Avatars and Immersive Content
- Broadcast Positioning System (BPS): Resilience and Precision
- Resilience, Safety and Protection for Broadcast Service
- Cybersecurity for Broadcasters
- Streaming Improvements: Low Latency and Multiview
- Embracing the Cloud: Transforming Broadcast Operations with ATSC 3.0 and Broadband Technologies
- Enhancing Video Streaming Quality and Efficiency
- 5G in Broadcast Spectrum and Video Quality Metrics
- Getting the Most out of ATSC 3.0
- AI Applications: Captions, Content Detection and Advertising Management
- Immersive Audio, Satellite and OTT Delivery
- Innovations in Live Production and Broadcast Workflows
- IP Networks and the Broadcast Chain: Fast Friends
- 2024 BEITC Proceedings
- 2023 BEITC Proceedings
- 2022 BEITC Proceedings
- 2021 BEITC Proceedings
- 2020 BEITC Proceedings
AM Radio: Measurements and Modeling
Measurement of AM Band RF Noise Levels and Station Signal Attenuation - $15
Date: March 21, 2025Topics: 2025 BEITC Proceedings, AM Radio: Measurements and ModelingThis report covers measurements of RF noise levels on various roadway types from open interstate highways to city streets, to determine how the noise would affect AM broadcast reception. These environments reflect the current habits of AM radio listening, which is primarily in vehicles. In addition to RF noise level, RF signal levels were measured for three AM stations operating on frequencies in the lower, middle and upper portions of the AM broadcast band. These measurements provide a better understanding of how AM radio reception is affected by RF signal strength and noise in a range of roadway environments from rural to dense urban environments.
John Kean | Cavell Mertz & Associates | Alexandria, Va., United States
Measurement of Radio Frequency Emissions from Electric Vehicles and Electric Vehicle Charging Systems in the AM Broadcast Band - $15
Date: March 21, 2025Topics: 2025 BEITC Proceedings, AM Radio: Measurements and ModelingThis paper describes RF emission measurements conducted near two wireless electric vehicle charging facilities in Detroit, Michigan. The purpose of the measurements was to assess whether harmonic emissions from the charging facilities are likely to coincide with or fall near frequencies within the AM band. Audio recordings of AM broadcast reception were taken both while the charging facilities were operating and idle, with findings from these recordings to be detailed in a subsequent report.
Robert D. Weller, David H. Layer | National Association of Broadcasters | Washington, D.C., United States
Proving the HEBA Antenna - $15
Date: March 21, 2025Topics: 2025 BEITC Proceedings, AM Radio: Measurements and ModelingThe HEBA (High Efficiency Broadband Antenna) has been limited to daytime operation for 7 years. Recent NEC modeling efforts were successful in proving the vertical radiation pattern. The FCC granted nighttime approval in September 2024. Because the HEBA’s 72-foot height makes it a “short antenna,” the FCC rules for nighttime approval are difficult to satisfy. The HEBA also uses a novel two-port design to drive two active elements in the antenna system, while the antenna elements are stacked above a 40-foot square elevated ground plane. There are no ground radials. The HEBA is immune to seasonal tuning variations experienced by many conventional AM antenna systems. This paper explores the antenna design, provides measurements and uses NEC modeling to illustrate its performance.
David Maxson | Isotrope, LLC | Boston, Mass., United States