rfscan web

Centre MHz Sample rate FFT LNA dB VGA dB Amp +14 Auto gain Hide DC

Record s

Drag on the spectrum to zoom, double-click to retune to that frequency.

Start MHz Stop MHz Bin width LNA dB VGA dB Amp +14 Odd ones only

Firmware sweep mode, 20 MHz steps. Drag to zoom, double-click for the full range. Red ticks on top: tuning steps that clipped.

Frequency ▴	Width	Peak dB	Mean dB	Busy	Band	Note

IQ files (.sigmf-meta + .sigmf-data, .cs8, .cs16, .cf32) Recording

Type Rate Msps Centre MHz FFT Rows Hide DC

Decoders:

Works in any browser, nothing is uploaded. Drag a box on the waterfall to select time and frequency.

Frequency	Width	Peak dB	Mean dB	Duty	Band	Note

Preset Mode Frequency MHz Volume Squelch dB Stereo

Scanner: auto-lock on active channels Threshold dB over floor10 Hold s Priority MHz

Listen plays the demodulated audio in the browser. FM broadcast gives stereo and RDS; "Find stations" sweeps the band.

Click in the spectrum to tune within the captured 10 MHz; the highlighted strip is the channel being played.

Decoders run the rfscan Python code in the browser (Pyodide). The first run downloads ~30 MB.

Level	Decoder	Frequency	ID	Seen	Last label