Topic
Unlicensed / Part 15
FCC Part 15 rules, equipment authorization & zero-license operations
Sep 16, 2026
What LoRa Actually Is: Physical Layer Mechanics, FCC Part 15, and the 1-Watt Trap
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.
8 min read
Sep 09, 2026
Welcome to OpenRF Note: An Unlicensed RF & Wireless Notebook
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.
5 min read