It uses a terrain-sensitive propagation algorithm to evaluate your elevation, local hills, and the distance to nearby broadcast towers.
Before parking your RV for the night, check the map for the local area. Unlike streaming, OTA TV doesn't use mobile data. The FCC map helps you scout campsites that have good reception. dtv gov maps
The FCC DTV map system evolved from the analog F(50,90) concept (50% location, 90% time reliability) to digital's F(50,50) and F(50,90) modified for digital thresholds. Key documents: 90) concept (50% location