Radio & RF · Source briefing
FCC bandwidth question puts US default presets under review
The story
Hackaday reports a debate over FCC Part 15.247, which it reads as requiring at least 500 kHz of bandwidth; the long-standing Meshtastic default, Long Fast, uses 250 kHz. Commenters dispute whether that paragraph applies to LoRa at all, and the article reports no FCC action or rule change. It says recent alpha firmware starts new US radios on a configuration intended to comply. Radios on 500 kHz and 250 kHz settings cannot hear each other, so communities may split while they migrate.
What it means for your next build
Do not change a working regional mesh on your own. Watch what your local group decides, plan any preset move together, and record the date you switched so field reports stay comparable.
Track preset migrationsThis is BackCountrySignal's own short briefing. Read the original source for its complete details. Firmware and app announcements do not establish tested Graham County Mesh compatibility.