Microwave WebSDR

This 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 uWave WebSDR and how it works can be found in these documents:-

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

A general overview of the Microwave 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, click name to tune)
Satellite Tracking Map (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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Please note: This WebSDR works best running HTML5 rather than JAVA - To obtain optimum performance please use a recent version of Firefox, Chrome, Opera or Safari

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

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


Welcome to all visitors
The websdr will be unavailable for a few hours from 1400 on Sunday 29th March, to allow us to upgrade the Host PC Hardware.
Don't be shy :-) Why not say hello by adding your name or callsign just below this window, so that we can see who you are and where you are listening from.


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)