CongoSky Skunkworks
A flood warning is ~43 bytes of text. A Sigfox radio frame holds just 12. Impossible — unless sender and receiver already share a dictionary of what alerts look like. Then you don't send the message, you send the surprise: which template, which place, which time. Pick an alert and watch it collapse to something a tiny radio can carry. This is BadgerNet — riding every radio by making it carry more.
How the frame is built (from the real BadgerNet proof): compress against the shared dictionary → encrypt → frame = nonce(2) ‖ ciphertext ‖ MAC(4). The dictionary is the “shared knowledge”; only the surprise is transmitted, then a 2-byte counter-nonce and a 4-byte authentication tag wrap it (wrong key or a flipped bit is rejected). A 4-byte MAC is the honest tradeoff for low-stakes telemetry — use a full 16-byte tag for secrets. The radios are simulated here; this is the software layer that rides real LoRa / Sigfox / LEO.