Rays Atlas provides free, accurate TV signal coverage information to help you cut the cord and enjoy free over-the-air television.
Our Mission
We believe everyone deserves access to free broadcast television. Our mission is to help cord-cutters find the best antenna setup for their location by providing detailed, physics-based signal coverage analysis.
How It Works
Our coverage maps are generated using sophisticated RF propagation modeling that takes into account:
- Terrain Analysis – We use high-resolution elevation data (SRTM) to model how mountains, hills, and valleys affect signal propagation
- Tower Data – Official FCC broadcast tower information including location, power output, antenna height, and channel assignments
- Signal Physics – Terrain-aware knife-edge diffraction modeling to calculate realistic signal strengths at each location
- Network Affiliations – We track which local stations carry major networks like ABC, NBC, CBS, FOX, and PBS
Data Sources
- Tower Information – FCC TV Query database (public record)
- Terrain Data – NASA Shuttle Radar Topography Mission (SRTM)
- ZIP Code Boundaries – US Census Bureau ZCTA shapefiles
- Network Affiliations – Compiled from public broadcaster information
Accuracy
Our signal predictions are estimates based on terrain and distance. Actual reception can vary due to:
- Building materials and obstructions
- Antenna type and placement
- Weather conditions
- Local interference sources
For best results, use our recommendations as a starting point and experiment with antenna placement.
Contact
Have questions or feedback? We'd love to hear from you.
Email: hello@raysatlas.com