Northern Utah WebSDR Logo - A skep with a Yagi
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Northern Utah WebSDR - Server #4

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 (WebSDR #4) is 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!

WebSDR #4 covers the 40-10 meter amateur bands.

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 2020 User Survey has finished - Results may be found here.


As of 6 November, the 40, 20, 15 and 10 meter receivers on this WebSDR have been replaced with wider-bandwidth, higher-performance hardware. See the latest news page for more information.

Special thanks to those who donate to the Northern Utah WebSDR for making this upgrade possible!

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

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.

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   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
Audio problems with Apple devices/Chrome/Safari?
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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.

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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

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 Yellow WebSDR (#1):

Clicking a band below will switch to the Green WebSDR (#2):

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

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 87 users on the Northern Utah WebSDR system as of Sun 05 Dec 2021 03:31:01 PM MST.
WebSDR #1 had 34, WebSDR #2 had 35, WebSDR #3 had 4, and WebSDR #4 had 14 users.

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

Actual CPU utilization percentage is 1/2 of the value shown above.

Flag Counter The information below is updated only when the entire page is refreshed.             
The DX spots Widget below may be offline due to problems with their server - sorry!