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USB CW RX:Check box, or put ?usbcw in the URL for USB CW reception.
CW uses a center frequency of 750 Hz and LSB by default.
PassBand Tuning (PBT):
Use buttons to select BW/mode or drag passband edges on frequency scale. PBT/IF Shift by Weert Websdr.Logbook:Time, frequency, your name/call, and DXCC information are added automatically.
View the last 20 lines of the logbook,
or the entire logbook(opens new tab/window).
More info about Noise Reduction, Notch2 & High Boost here
Audio buffering:
More buffering may help with drop-outs or slow/jittery connections.
Vari-Notch (Hz): Off
CW Peak (Hz): Off
Ref. Tone
Gain control:
RF AGC
Alt AGC
Manual
Gain:
Try "Alt AGC" for better AM reception, particularly with QSB.
devpkdev_avgdev_pkavg
Audio recording:
Recorded audio includes any DSP filtering, Notch2 or High Boost. Your browser may not support downloading the recording; Try it anyway, but if it doesn't work, please try a recent version of Firefox, Chrome or Opera.
Audio channel:
Left
Both
Right
Sig. strength plot:
Waterfall view:
Or use scroll wheel & dragging on waterfall.
Speed:
Size:
View:
Toggle "Hide labels" if labels are missing.
There were 130 users on the Northern Utah WebSDR system(WebSDRs 1-5) as of Wed May 20 01:50:01 PM MDT 2026. WebSDR #1 had 55, WebSDR #2 had 48, WebSDR #3 had 0, WebSDR #4 had 24 and WebSDR #5 had 3 users. This server up 1 hour, 17 minutes
Statistics:
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devpkdev_avgdev_pkavgfreq???
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