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

The Northern Utah WebSDR now has a YouTube channel - see it here!
Northern Utah WebSDR - Server #3
80/40M back-up receivers and various SWBC using an Omnidirectional antenna
Plus 2 meters via south-pointing beam antenna

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.

This WebSDR system covers 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.

Covered by this server:

  • The 2 meter amateur band using a 5 element Yagi pointed (more or less) south, allowing reception of many repeaters and stations in the Salt Lake, Davis, Weber and Box Elder counties - which includes the areas from Salt Lake to north of Brigham City.
  • The 90, 60, 49, 41, 31, 25 and 19 meter shortwave broadcast bands.
  • Also provided by this server is redundancy for the very popular 80/75 and 40 meter amateur bands if WebSDR1 (Yellow) goes offline, using these lower-performance receivers.
  • The 60 and 30 meter amateur bands are covered by the "60-49M" and "31-30M" meter receivers, respectively.

The 2021/2022 User Survey has finished and you may see the results here.

2 meter reception significantly improved:

In August, 2022 the 2 meter antenna - a south-pointing, 5 element Yagi - was relocated away from the (RF-noisy!) building and to a much greater height on the tower with the beam antennas. Doing this almost completely eliminates all QRN from computers, networking gear and switching power supplies, lowering the noise floor considerably.  The added height offers better signals due to the reduction of Fresnel (and other) effects, allowing an estimated 15 dB or so improvement in overall performance.

In late July, 2023 the filter/amplifier module was also relocated to the remote tower, further reducing the noise floor and improving reception.

For Salt Lake City area coverage on 2 meters and 70cm look for the Salt Lake Metro buttons, below.

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 URL parameters are described on the "FAQ" page here.

If you find that CatSync doesn't work with this WebSDR, add "?10Hz" to the URL.

Remember: If you don't do something (e.g. retune, adjust bandwidth, volume) this WebSDR will time out after 120 minutes. If it does time out, refresh the browser.

Does the echo of your transmitted audio from the WebSDR drive you crazy? This circuit may help!

Other WebSDR systems:

Western U.S.:  KFS, Half-Moon Bay, CA   W7RNA, Phoenix, AZ   AI6VN, Maui, HI - New URL - Update your bookmarks!

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
Terms and Conditions of use
Technical Information
Latest News and known issues
Northern Utah WebSDR FAQ
Scientific Research
Are you having audio problems? Click here!
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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:  ?  
Enter frequency above, or tune by clicking/dragging/scrollwheel on the frequency scale. freq???
Mode:  ?      
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  Yellow WebSDR (#1) with its Omnidirectional antennas: 

Clicking a band below will switch to the  Green WebSDR (#2) with its Omnidrectional antennas: 

Clicking a band below will switch to the  Magenta WebSDR (#4) with its East-pointing beam: 

WebSDR #4 uses a Non-Rotatable directional antenna with a heading of 87° true (East - U.S., Africa, Southern Europe).
Clicking a band below will switch to the  Teal WebSDR (#5) with its Northwest-pointing beam: 

WebSDR #5 uses a Non-Rotatable directional antenna with a heading of 286° true (Northwest - Alaska, Asia, Pacific).
Clicking a band below will switch to the  Salt Lake metro WebSDR: 

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

?:   ? kHz @ -6dB; ? kHz @ -60dB.  Default BW in bold.
 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.
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).

? dBm  Peak ? dBm  ?
 S-meter squelch:        
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.
  Vari-Notch (Hz):   Off

   CW Peak (Hz):   Off    Ref. Tone

Gain control:   
RF AGC Alt AGC Manual
Try "Alt AGC" for better AM reception, particularly with QSB.

devpk dev_avg dev_pkavg   

Audio channel: Left Both Right

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

Toggle "Hide labels" if labels are missing.

There were 84 users on the Northern Utah WebSDR system (WebSDRs 1-5) as of Wed 27 Sep 2023 04:53:01 PM MDT.
WebSDR #1 had 16, WebSDR #2 had 43, WebSDR #3 had 4, WebSDR #4 had 17 and WebSDR #5 had 4 users.

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

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

? devpk dev_avg dev_pkavg freq???
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