Northern Utah WebSDR Logo - A skep with a Yagi
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The Northern Utah WebSDR is a non-profit 501c(3) organization

Northern Utah WebSDR - Server #1

This WebSDR is located near Corinne, Utah, about 80 miles (94km) north of Salt Lake City and about 14 miles (23km) east of the Golden Spike National Historic Site.  

The Northern Utah WebSDR system has coverage on all U.S. amateur HF, MF and LF bands, 2 meters, the bottom 1 MHz of 6 meters, and several shortwave broadcast bands - see the Technical Info page for more details.

This server (Yellow) covers lower-frequency bands:

  • 2200 and 630 meters - active with groundwave out to about 700 miles/1000 km during the day and skywave at night.
  • 160 and 80/75 meters, active during local nighttime.
  • 40/60 meters which may be active day and night.
Check the band conditions at the bottom of the web page.

  • For 20, 17, 15, 12, 10 and 6 meters check the co-located WebSDR #2 (Green) server.
  • For 40, 30, 20, 17, 15, 12 and 10 meters using an east-pointing beam antenna check out WebSDR #4 (Magenta) - both using the band selections below.
The 2020 User Survey has finished - Results may be found here.
To invoke this page with a preset frequency and mode, append "/?tune=(freq kHz)(mode)" to the URL and save it as a bookmark as in: http://[WebSDR's URL]?tune=7200lsb

Additional parameters:
?zoom=n  Zoom "n" times (0-9)
?squelch=1  Enable squelch
?nolabels=1  Hide freq. labels

Remember: If you don't do something (e.g. retune, adjust bandwidth, volume) this WebSDR will time out after 90 minutes. If it does time out, refresh the browser.

On-site KiwiSDR receivers are now available for testing - see the Kiwi FAQ page for more information.

Cloud Lightning Bolt Ever wonder where some of those loud static crashes are coming from? A look at the U.S.A. lightning map may help answer the question!

Other WebSDR systems:

Western U.S.:  KFS, Half-Moon Bay, CA   W7RNA, Phoenix, AZ   AI6VN, Maui, HI

Eastern U.S.:   K3FEF, Milford, PA, NA5B near Washington DC, N4BBQ, Dalhonega, GA and N4BUT, Orlando, FL

More information about the WebSDR project, including a list of WebSDRs worldwide, can be found at

The Northern Utah WebSDR Landing Page

Everything you wanted to know about the Northern Utah WebSDR system!

About this WebSDR and contact info
Technical Information
Latest News and known issues
Northern Utah WebSDR FAQ
Automatic computer audio muting for your HF transceiver.

Stop being driven crazy by the echo and eliminate the need to manually mute the WebSDR audio when you transmit with this easy project!

Find out more!

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Having audio problems with Apple devices/Chrome/Safari?

If you see a "Chrome audio start" or "Safari audio start" button below, Click on it!

If that doesn't work, read this article.

If you are hearing a "warble" or "stuttering" when listening to CW or digital signals, try using Firefox instead of Chrome - Read here for more information about this problem.

The 2022 Northern Utah WebSDR user survey is now available!

We are interested in how you use the Northern Utah WebSDR - and how we might improve it: Let us know

Take the survey

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Allow keyboard:
j k ← →: freq down/up (+shift/ctrl/alt faster)
u l c a f: USB, LSB, CW, AM, FM
z Z: center/zoom waterfall
g: enter frequency
m: mute/unmute audio
s: toggle squelch

Frequency: kHz    VFO:  ?         Mode:  ?    
Enter frequency above, or tune by clicking/dragging/scrollwheel on the frequency scale.
Use the = kHz button to snap to the nearest kHz.

The bands in bold use high-performance receivers.  Please use only one server at a time!
Clicking a band below will switch to the Green WebSDR (#2)

Clicking on a band below will switch to the Blue WebSDR (#3)

Clicking a band below will switch to the Magenta WebSDR (#4):

WebSDR #4 uses a Non-Rotatable directional antenna with a heading of 87° true (East).
Clicking a band below will switch to the Salt Lake metro WebSDR:

Memories are stored as cookies on your computer, not on the server.

? dBm  Peak ? dBm  ?
Mute Squelch Notch1
Notch2 High Boost
 DSP Noise Reduction:
More info about Noise Reduction, Notch2 & High Boost here

Audio buffering:
  More buffering may help with drop-outs or slow/jittery connections.

Gain control: AGC on manual

Sig. strength plot:
Waterfall view:
Or use scroll wheel & dragging on waterfall.

Toggle "Hide labels" if labels are missing.
? kHz @ -6dB; ? kHz @ -60dB.  Default BW in bold.
PassBand Tuning (PBT):
Use buttons to select BW/mode or drag passband edges on frequency scale. PBT/IF Shift by Weert Websdr.
Call of station that you hear:
Comments, if any:
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).

There were 84 users on the Northern Utah WebSDR system (WebSDRs 1-4) as of Thu 27 Jan 2022 12:48:01 PM MST.
WebSDR #1 had 39, WebSDR #2 had 31, WebSDR #3 had 4, and WebSDR #4 had 10 users.

There are currently ? user(s) on this WebSDR:      compact view

Actual CPU utilization percentage is 1/4th of the value shown above.

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