WebSDR for 434 and 1296 MHz

23cm_WebSDR_Antenna_up_mastFor those of you out of range of the flotilla of 434 MHz balloons launched on Saturday, December 28, you can still receive the USB signals!

Noel G8GTZ, Martin G8JNJ and Phil M0DNY from the Southampton University Wireless Society, have recently set up a Microwave WebSDR near Basingstoke in the UK. It currently supports parts of the 23cm and 70cm bands, (2m is a work-in-progress) and can be listened to from anywhere in the world.

The link is: http://websdr.suws.org.uk/

A couple of notes when using the websdr:

– Please set your location in dl-fldigi to somewhere around 51.294, -1.131 so we don’t have any fake receiver lines on the map!

– Connection to the site is over a several km wifi link, so once you’ve found the signal, please switch off your waterfall view (Set to ‘blind’) to save bandwidth for others.

– The waterfall speed will also be automatically limited as the number of users increases.

Phil M0DNY

Frequencies of 434 MHz USB balloons going aloft on Superlaunch Saturday, Dec 28 can be seen at

Real time tracking of the balloons at http://spacenear.us/tracker/

Beginners Guide to Tracking using dl-fldigi http://ukhas.org.uk/guides:tracking_guide

Slow Scan Digital Video (SSDV) Guide http://ukhas.org.uk/guides:ssdv

Check the #highaltitude IRC channel for chat about the launches

Balloon flights are always subject to last minute changes. To get up-to-date information subscribe to the UKHAS Mailing List by sending a blank email to this address: