Continuing his Science, Technology, Engineering and Mathematics (STEM) work with schools, Chris Stubbs M6EDF, will launch a balloon STEWARDS-1/CHEAPO-12 for Stewards Academy, Harlow.
The launch will take place at 2:30pm (13:30 GMT) on Tuesday, June 3. Chris will be using a “mini” tracker with 1 AA battery on a 36″ foil balloon and aims to get the balloon to float for a long duration.
It will transmit 50 bps 7n2 RTTY on 434.300 MHz with about 450 Hz FSK and may have a range of up to 500 km depending on altitude.
Chris took the amateur radio Foundation training course run by the Chelmsford Amateur Radio Society (CARS) in January 2013. He is keen on both electronic construction and software development and combines the two interests in High Altitude Ballooning (HAB). Chris has built many tracker payloads for his balloon launches which usually take place from Danbury Common near Chelmsford.
Details of his high-altitude ballooning hardware and experiments are online at http://chris-stubbs.co.uk/
See online real time tracks and frequencies of this and other 434 MHz balloons at
Beginners Guide to Tracking using dl-fldigi http://ukhas.org.uk/guides:tracking_guide
The role of these 434 MHz balloon launches in teaching maths and science was recently recognised by the Department for Education (DfE) see https://amsat-uk.org/2014/05/11/434-mhz-balloons-have-a-role-in-stem-education/
Listen to balloons online (when in range of south-east UK) from anywhere in the world with the SUWS 434 MHz WebSDR (select USB) https://amsat-uk.org/2013/12/28/websdr-for-434-and-1296-mhz/
Check the #highaltitude IRC channel for launch chat. A web client is available at http://webchat.freenode.net/?channels=highaltitude
Chelmsford 434 MHz STEM Balloon Launch
The Chelmsford Amateur Radio Society run training courses for those wishing to get their amateur licence. To find out more speak to Clive G1EUC on
Email: training2014 at g0mwt.org.uk
What is Amateur Radio ? http://www.essexham.co.uk/what-is-amateur-radio
Post flight update: The balloon floated at an altitude of under 6,000 metres for just over 2 hours.