Open-source notebook for unlicensed radio frequency systems, FCC Part 15 compliance, Wi-Fi environment detection, and diagnostic RF engineering.https://openrfnote.com/https://openrfnote.com/blog/lora-us-fcc-open-rf-guide/https://openrfnote.com/blog/lora-us-fcc-open-rf-guide/A builder's guide to Chirp Spread Spectrum physics, symbol time math, why 125 kHz LoRa cannot use the §15.247 1-Watt digital modulation shortcut, and how Part 15 differs from Part 97.Wed, 16 Sep 2026 09:00:00 GMTLoRaUnlicensedGuidesHardwarehttps://openrfnote.com/blog/welcome-to-openrfnote/https://openrfnote.com/blog/welcome-to-openrfnote/Why OpenRF Note exists: documenting FCC Part 15 unlicensed spectrum, exhaustive channel rosters, protocol packet framing, coexistence maps, and diagnostic RF engineering in the open.Wed, 09 Sep 2026 09:00:00 GMTGuidesUnlicensedProtocolsMeshCore