Northern Utah WebSDR Logo - A skep with a Yagi
Utah SDR WX
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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!
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Northern Utah WebSDR - Server #3

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 uses four servers to cover 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, 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. 30 meters happens to be covered by the "31-30" meter receiver as well.

The 2022 User Survey has finished - Watch this space for results.

2 meter reception significantly improved:

The 2 meter antenna - a south-pointing, 5 element Yagi - was relocated away from the (RF-noisy!) building and to a much greater height. 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.

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

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 http://www.websdr.org.


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?
Follow us on Facebook! Small 32x32 Facebook Icon
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.
Notice:

Expect occasional outages of all Northern Utah WebSDR servers as maintenance is performed.

Important Notice for Firefox users:

If you are using the Firefox browser and have no audio after an update to version 103, you MUST press the Firefox/Mozilla audio start button to hear sound.

If you don't want to press this button every time you load the page, you can find out how to change the default setting by going here:

http://www.sdrutah.org/info/chromefix.html#firefox



It seems you are using a mobile device; click here to switch to the mobile version of this site.
It seems Java is not installed or disabled on your computer. You need to install and/or enable it for this website to work properly.
Since Java version 7u51, Java needs to be enabled separately for each website; see http://websdr.org/java.html for instructions.
Your browser does not seem to support HTML5 WebAudio; please try a recent version of Firefox, Chrome, Opera or Safari; or switch to Java.

View:
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:  ?      
   VFO:
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 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:
Memories are stored as cookies on your computer, not on the server.

Bandwidth:
? kHz @ -6dB; ? kHz @ -60dB.  Default BW in bold.
  CW tunes using LSB and assumes a center frequency of 750 Hz.

PassBand Tuning (PBT):
Use buttons to select BW/mode or drag passband edges on frequency scale. PBT/IF Shift by Weert Websdr.
Logbook:
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).


[scale]
? dBm  Peak ? dBm  ?
 S-meter squelch:        
  
Volume:
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
Gain:
Try "Alt AGC" for better AM reception, particularly with QSB.

devpk dev_avg dev_pkavg   

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

Toggle "Hide labels" if labels are missing.



There were 78 users on the Northern Utah WebSDR system (WebSDRs 1-5) as of Mon 08 Aug 2022 03:37:01 PM MDT.
WebSDR #1 had 30, WebSDR #2 had 35, WebSDR #3 had 0, WebSDR #4 had 12 and WebSDR #5 had 1 users.

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


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

? devpk dev_avg dev_pkavg freq???
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