Chirp spread spectrum: each symbol is a frequency sweep. Trades data rate for astonishing range and noise immunity.
Unmistakable diagonal sawtooth ramps sweeping across the channel. The ramp's width is the channel bandwidth and its rate gives the spreading factor; tap one and the receiver reads both.
LoRaWAN IoT sensors, Meshtastic, long-range telemetry.
SPECTRA synthesises LoRa (CSS) in your browser, so you can watch its waterfall signature and hear it demodulated without any radio hardware.
Open the live receiver →