to the landing page for the Northern Utah WebSDR
three WebSDR systems
available via the
links below - Please
remember to update your bookmarks!
This WebSDR server covers the 160, 80/75, 60 and 40 meter amateur bands
as well as the AM broadcast band, the 120, 69 and 49 meter shortwave
- This WebSDR server covers the 30, 20, 17, 15, 12, 10 and the 6 meter (bottom 1 MHz)
amateur bands and the 31 and 13 meter shortwave broadcast bands.
believe that we have fixed two earlier issues:
- This WebSDR server covers the 2200, 630 and 2 meter amateur bands.
It also covers the 90, 41, 25 and 19 meter shortwave
and provides redundancy for WebSDR1's coverage of the very popular
80/75 and 40 meter amateur bands.
- The above links should now work with the Microsoft Edge
- You can now apply the frequency and mode to the
URL, as in: sdrutah.org/websdr1.html?tune=7272lsb
If you get a
"blank" page from the above three links:
- We have been getting occasional reports that
aren't working. We have been unable to replicate this issue
using configurations typical to most users (e.g. Windows or IOS and using
the Chrome, Firefox, Safari and Edge browsers):
As far as we can tell, it may be specific to certain browsers
on some Linux distributions.
If you discover other issues related to browser compatibility, please
let us know via the contact information on the "About
this WebSDR and contact info"
- Try a different browser: Recommended
browsers include Chrome, Firefox and PaleMoon.
- If that doesn't help, try a different computer on the same Internet connection
- and if that works, check the Firewall settings on the first computer:
You may have to put "sdrutah.org" and the WebSDR servers
themselves in a "trusted" zone and/or put on the "allowed" list..
- If you get a blank screen on both computers on
same Internet connection there may be a firewall/router setting that
prohibits redirects, requiring that "sdrutah.org" be put into the
"trusted" zone and/or put on the "allowed" list.
the recent change in the WebSDR's pages/domain? Read here.
For different geographical coverage, here are a few selected WebSDRs available for use:
Bay, CA - 160, 80, 40 and 20 meter coverage.
This is the
to the Northern Utah SDR for "local" (e.g. Western U.S.)
a complete list of WebSDR systems worldwide, go to the websdr.org page.
Milford, PA - MW/160, 80, 40, 30, 25, 20 and 17
Washington DC - MW/160, 80, 40, 30, 25, 20, 15
and 10 meter coverage.
Dalhonega, GA - MW/160, 80, 40, and 20
Other things going on at the Northern Utah WebSDR
In addition to the WebSDR receivers, there are a few other things going on at the Northern Utah WebSDR, including:
- KiwiSDR receivers.
These are stand-alone HF receivers capable of tuning from near DC
to 30 MHz, continuously, and are capable not only decoding normal
"voice" modes (USB, LSB, AM, FM) but they also have the capability of decoding other types of signals - including RTTY, FAX, SSTV (Slow-Scan TV), and decode CW. These receivers are also part of a TDOA (Time Direction of Arrival) network that allow the approximate locations of received signals to be determined.
- Please note that these receivers can only support a few users at a time so please refrain from using them when receiving on a frequency/mode that is already supported by the main WebSDR system!
- For more information about the KiwiSDRs, read HERE (link).
- "All band" WSPRNET monitoring. Using
the KiwiSDRs in conjunction with scripts running on another local
machine there are virtual receivers monitoring the WSPR bands on LF, MF and HF amateur bands all (e.g. 2200, 630, 160, 80, 60, 40, 30, 20, 17, 15, 12 and 10 meters)
using the callsign "KA7OEI-1". These receivers are using the
excellent antenna system on site to receive, decode and contribute WSPR
spots and forward that information to the WSPRNET (link) web site where the results are aggregated and made publically available.
- HF Noise monitoring. Also
using the KiwiSDRs - and related to the WSPRNET monitoring - the HF
noise floor is also being monitored at this site. The results of
this may be analyzed to discern band openings, the influences of the
sun's activity, lightning static - and perhaps a few other things
related to HF propagation and the Earth's geomagnetic field.
Results of this monitoring may be seen at the following links:
- Grafana Noise Dashboard - This link automatically selects the Northern Utah WebSDR system and all bands - use the drop-down menus to select specific bands and/or receivers of interest.
- WSPRdaemon - This site provides at-a-glance graphs of noise plots on the participating bands and receive sites.