Farnham WebSDR

This WebSDR (previously known as the Microwave WebSDR) is operated by the Southampton University Wireless Society in collaboration with Martin G8JNJ, Noel G8GTZ and Phil M0DNY

More information about how to operate the SUWS Farnham WebSDR and how it works can be found in these documents:-

A comprehensive User Guide to the Farnham WebSDR - Written by Martin G8JNJ

A general overview of the Farnham WebSDR - Written by Noel G8GTZ

The SDR is located in IO91OF - If you are using this SDR to track High Altitude Balloons with Habhub please use Latitude: 51.23, Longitude: -0.82

Upcoming Satellite Passes: (updated automatically every 5 minutes)

N2YO Amateur Satellite Tracking (opens in new tab)

There are currently ? Users on this WebSDR. The software used for this WebSDR is kindly provided by the WebSDR Project
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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

Voice/SSTV / Packet
Beacon / Transponder

Waterfall view: Speed: Size: View:
You can also click on the waterall and use the mouse scroll wheel


Or tune by clicking / dragging / scrollwheel on the frequency scale


Bandwidth: ? kHz @ -6dB / ? kHz @ -60dB

Or drag the passband edges on the frequency scale

? dB; peak ? dB;

Signal strength plot:

mute squelch autonotch


This WebSDR is currently being used by ? user(s) simultaneously:      compact view


August 2016 Update - We have now added a band pass filter ahead of the 2m pre-amp which has reduced the level of some spurious signals.
Installed a new 50MHz mixed polarisation antenna and mast head pre-amp has improved the receive sensitivity on 6m by about 10dB
A Balun and new coax has been added to the LF antenna. This has improved the signal level, but interference from other equipment on site continues to be a problem.
Frequencies on the 3cm / 10GHz band vary with temperature, so the tags are not always correct - we hope to fix this in the future.
All visitors are welcome, so don't be shy :-) Why not share who you are and where you are, by adding your name or callsign in the text box just below this window.


This chatbox is intended to discuss the operation of the WebSDR, please add your name or callsign in the textbox above. The operators of this site disclaim any responsibility for text appearing in this chatbox.

Please enter the callsign of any interesting signal that you hear: Additional notes or comments, if any:
Note: time, frequency, your name/call, and DXCC information are added automatically. View the last 20 lines of the logbook, or the entire logbook (ctrl-click for new tab/window)