• WebSDR1 ("Yellow") - Covers the 2200, 630, 160, 80/75, 60 and 40 meter amateur bands, AM broadcast, the 120, and 60 meter shortwave broadcast bands and the 1750 meter LowFER band.
• Shortcuts:  2200 Meters (136 kHz)  630 meters (474.2 kHz)  AM Broadcast (1160 kHz)  160 Meters (1875 kHz)   75 meters (3937 kHz)   60 meters (5330.5 kHz)   40 meters (7272 kHz)
• The 2200 meter receiver's coverage also includes the FCC part 15 "1750" meter band and this and the 630 meter receiver collectively cover the LF NDB (beacon) frequencies.
• If the above doesn't work, try this link for WebSDR #1.  This alternative link uses HTTP on port 80 and is available only for WebSDR #1 at this time.
• For phones and tablets, there is a simplified, mobile Version of WebSDR #1.   (If that doesn't work, try the port 80 alternative for WebSDR #1.)

• WebSDR2 ("Green") - Covers the 30, 20, 17, 15, 12, 10 and 6 meter (bottom 1 MHz) amateur bands.
• Shortcuts:  30 meters (10125 kHz)   20 meters (14290 kHz)   17 meters (18145 kHz)   15 meters (21250 kHz)   12 meters (24925 kHz)   10 meters (28225 kHz)   6 meters (50125 kHz)
• For phones and tablets, there is a simplified, mobile Version of WebSDR #2.

• WebSDR3 ("Blue") - Covers the 80/75, 40, 30 and 2 meter amateur bands and the 90, 60, 49, 41, 31, 25 and 19 meter shortwave broadcast bands.
• This server also serves as a back-up for WebSDR1's coverage of the very popular 80/75 and 40 meter amateur bands using lower-performance receivers.
• The 60/49 meter receiver also covers the 60 meter amateur band.
  
• Shortcuts:  75 Meter back-up RX (3937 kHz)  40 meter back-up RX (7272 kHz)  2 meters - low (145.29 MHz FM)   2 meters - high (146.62 MHz FM)
• SWBC:  60/49 meters (5000 kHz),  31 Meters (10000 kHz)  25 Meters (11725 kHz)  19 Meters (15000 kHz)
• For phones and tablets, there is a simplified, mobile Version of WebSDR #3.

• WebSDR4 ("Magenta") - Covers the 40, 30, 20, 17, 15, 12 and 10 meter amateur bands using an east-pointing beam antenna.
• Shortcuts:  40 meters (7272 kHz)  30 Meters (10125 kHz)  20 meters (14290 kHz)  17 meters (18145 kHz)  15 meters - (21250 kHz)    12 meters (24925 kHz)   10 meters - (28225 kHz)
• This server uses a U.S. Antenna Products (formerly Hy-Gain) LP-1002 that is fixed (non-rotatable) on an azimuth of 87° (true).
• The orientation of its antenna favors the Eastern United States which means that the main lobe for DX is oriented toward South Africa, and toward Australia and New Zealand via long path.
• For phones and tablets, there is a simplified, mobile Version of WebSDR #4.

• WebSDR5 ("Teal") - Covers the 30, 20, 17, 15, 12 and 10 meter amateur bands using an northwest-pointing beam antenna.
• Shortcuts:   30 Meters (10125 kHz)  20 meters (14290 kHz)  17 meters (18145 kHz)  15 meters - (21250 kHz)    12 meters (24925 kHz)   10 meters - (28225 kHz)
• This server uses a KLM 10-30-7LPA log periodic beam that is fixed (non-rotatable) on an azimuth of 278° (true).
• The orientation of this antenna is to the NorthWest, which means that the main lobe is pointed toward the west coast of the US, Canada and Alaska, and for DX it is oriented toward Asia - including China, Japan, eastern Russia, Australia and New Zealand.
• For phones and tablets, there is a simplified, mobile Version of WebSDR #5.

• Salt Lake Metro VHF/UHF ("Peach") - This covers the Salt Lake City, Utah area from a location in the foothills along the east side of the valley and has coverage on the 2 meter and 70 cm amateur bands, a 2 MHz swath of the "Aircraft" band, and the bottom 1 MHz of the 6 meter amateur band.
• Shortcuts: 2 Meter Earth<>Space (145.900 USB)  2 meters - low (145.49 MHz FM, squelched)  2 meters - high (146.62 MHz FM, squelched)  70cm repeaters - low (446-448 MHz)  70cm repeaters - high (448-450 MHz)  Salt Lake Air Traffic (121.1-123.1 MHz) 
• For phones and tables, there is a simplified, mobile version of this WebSDR.

• Possible "no sound on iOS 13" work-around if the "START" button does not work:
• The configuration change below has been reported to work for at least some users of iOS 13 devices using the Safari.  Do this ONLY if you don't get either audio or the "iOS Audio Start" button when using your iOS 13 device.
• Go to: Settings -> Safari -> Request Desktop Website -> All websites.
• "All websites" is enabled by default.  Disable this setting and try your favorite WebSDR systems.
• If the above doesn't help,  READ HERE and HERE for more information about this issue.

• KFS, Half-Moon Bay, CA  80, 60, 40, 30, 20, 17, 15 and 10 meters.  This is the best alternative to the Northern Utah SDR for "local" (e.g. Western U.S.) coverage.
• W7NRA, Phoenix, AZ - KiwiSDR (Limited number of users). 
  

• K3FEF & W3TKP , Milford, PA - 2 Servers:
• K3FEF/W3TKP HF/SWBC- 7 bands that include amateur and broadcast on the MW/160, 90/80, 60/49/41/40, 31/30, 25/22, 20/19 and 17 meter bands.
• K3FEF/W3TKP  VHF - 6 bands that include much of 10 meters, a portion of 6 meters and 2 meters 
  

• NA5B near Washington DC - 2 Servers:
• NA5B HF/SWBC:  - 8 bands that include amateur and broadcast on the MW/160, 90/80, 60/49/41/40, 31/30, 25/22, 20/19, 15/13 and 11/10 meter bands
• NA5B VHF:  4 bands that include:  6 Meters (50-52 MHz), Air band (119-121 MHz), 2 meters (approx. 145.35-147.40) and NOAA Weather Radio (approx. 162.1-163.9 MHz).

• N4BBQ, Dalhonega, GA - 80, 40, 20, 10, 2 meters along with a portion of 70cm.
• N4BUT, Orlando, FL - 4 bands that include 160, 80, 40 and 20 meters.
  

• 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).
• KiwiSDRs 1-3 are connected to the omnidirectional antennas while KiwiSDRs 4 and 5 are connected to the east-pointing beam and Kiwi #6 is connected to the northwest-pointing beam..
• To visit a KiwiSDR at the Northern Utah WebSDR:
• Click here to connect to a KiwiSDR connected to the omni antenna (KiwiSDRs 1-3).  These KiwiSDRs cover from a few kHz to 30 MHz.  Coverage below approx. 400 kHz is via an E-field whip and above this is via the TCI-530 omnidirectional antenna.
  
• Click here to connect to a KiwiSDR connected to the east-pointing beam antenna (KiwiSDRs 4 and 5).  These KiwiSDRs cover from about 6 MHz to 30 MHz owing to the limitations of the beam antenna:  Coverage below 6 MHz is possible, but sensitivity is increasingly poor with lower frequency.
• Click here to connect to a KiwiSDR connected to the northwest-pointing beam antenna (KiwiSDR 6).  This KiwiSDR covers over from about 10 MHz to 30 MHz owing to the limitations of the beam antenna:  Coverage below 10 MHz is possible, but sensitivity is increasingly poor with lower frequency.
• Again, please refrain from using a KiwiSDR to listen to a frequency/mode already supported by the main WebSDR system.

• "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 all LF, MF and HF amateur bands (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 publicly available.
• For more information about WSPR monitoring at the Nothern Utah WebSDR site visit the "WSPRNET Monitoring at the Northern Utah WebSDR" web page.

• 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 the 10, 20, 40, 80 and 630 meter 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.
  

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