Northern Utah WebSDR Logo - A skep with a Yagi
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Northern Utah WebSDR - Server #4
40-10 Meters - East-pointing beam
Eastern U.S. and Canada, Africa, Southern Europe

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 WebSDR (#4) covers the 40-10 meter amateur bands in their entirety.

The receivers on this server (WebSDR #4) are connected to a log-periodic antenna (Hy-Gain - now U.S. Antenna Products - LP-1002) at 82 feet (25 meters) that covers 6 MHz through 40 MHz.  The antenna is on an 87° (relative to true North) heading which is optimized for covering the eastern half of the United States.  Farther abroad, the global coverage of this antenna includes Africa, the Caribbean, eastern South America (e.g. Brazil) with the Middle East and the Mediterranean at the northern periphery. Under certain conditions, Australia and New Zealand may be audible via "long path".  Please note that this antenna is NOT rotatable - and it will never be!

North American coverage of WebSDR #4's antenna Global coverage of WebSDR #4's antenna North American coverage of WebSDR #4's antenna
North American coverage of WebSDR #4's antenna.
Global coverage of WebSDR #4's antenna. The LP-1002 antenna at the Northern Utah WebSDR.
White: -3dB Beamwidth (>= 10dBi)      Yellow: -10dB beamwidth (>=3dBi)
Magenta: Gain: <=3dBi                  Peak gain of antenna: 13dBi
The above is informational - you will still be able to hear signals outside the pattern of the antenna.
Click on any of the above images for a larger version.
Maps courtesy NS6T's web site.

The nature of this antenna makes it more susceptible to rain/snow static than the TCI-530 Omnidirectional antenna.

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

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

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 Omnidirectional antennas: 

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

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 95 users on the Northern Utah WebSDR system (WebSDRs 1-5) as of Fri Jul 12 09:36:01 PM MDT 2024.
WebSDR #1 had 47, WebSDR #2 had 26, WebSDR #3 had 4, WebSDR #4 had 16 and WebSDR #5 had 2 users.
WebSDR status: up 5 days, 20 hours, 45 minutes

?      compact view


? devpk dev_avg dev_pkavg freq???
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