Listen to UK balloon signals on 434 MHz USB from anywhere in the world using the online SUWS WebSDR, further details at http://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/
Online real-time tracking of balloons http://tracker.habhub.org/
iPhone and iPad App
https://itunes.apple.com/gb/app/habhub-mobile/id919086716
To get up-to-date information on balloon flights subscribe to the UKHAS Mailing List by sending a blank email to this address: ukhas+subscribe@googlegroups.com
Follow balloon chat on the #highaltitude IRC channel at
http://webchat.freenode.net/?channels=highaltitude
(Enter Callsign or Nickname, the displayed ReCAPTCHA number and click on “Connect” button)
No radio? Use the SUWS online radio to receive signals from 434 MHz High Altitude Balloons when they are range of London (select USB mode) http://farnham-sdr.com/
Essex Ham – High Altitude Balloons http://www.essexham.co.uk/high-altitude-balloon-tracking
Beginners Guide to Tracking using dl-fldigi software http://ukhas.org.uk/guides:tracking_guide
Guide to Tracking using a SDR Dongle http://ukhas.org.uk/guides:sdr_tracker
This guide also provides links for virtual audio cable software to connect dl-fldigi to SDR software such as SDR-Radio or SDR# although you can instead just link the Audio Out and Mic In of your soundcard with a 3.5 mm stereo jack to jack plug cable.
Slow Scan Digital Video (SSDV) Guide http://ukhas.org.uk/guides:ssdv
See received SSDV images on the web at http://ssdv.habhub.org/
LoRa Handheld Receiver http://www.daveakerman.com/?p=1682
Making a LoRa Gateway http://www.daveakerman.com/?p=1719
What is Amateur Radio? http://www.essexham.co.uk/what-is-amateur-radio
Find an amateur radio training course near you https://thersgb.org/services/coursefinder/
A free booklet is available aimed at introducing newcomers to the hobby that can also be used as a handy reference while getting started, see
http://rsgb.org/main/get-started-in-amateur-radio/alex-discovers-amateur-radio-2/