Web31 Composite Waterfall index | fft | when | grid

Web31 Composite Waterfall

This page displays three minutes of spectral data with the most recent data on top. The scale is roughly 500 Hz/inch horizontally and 20 sec/inch vertically. White indicates presence of signal energy. Strong signals activate the automatic gain control. Gain fluctuations shows as darkened horizontal stripes. The last update was 6 years ago.

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View ten or fifteen minutes of data.

Ward Cunningham