Frequency-hopping spread spectrum. A narrow carrier that leaps pseudo-randomly across the band to resist jamming and interception.
Scattered short dashes sprinkled unpredictably across the whole span.
Bluetooth, some drone control links, military/tactical radios, cordless phones.
SPECTRA synthesises Freq Hopper in your browser, so you can watch its waterfall signature and hear it demodulated without any radio hardware.
Open the live receiver →