UK student balloon crosses Pacific

UBSEDS14 balloon track as at 19:02 GMT March 17, 2016

UBSEDS14 balloon track as at 19:02 GMT March 17, 2016

On Thursday, March 17 the UBSEDS14 balloon, launched by University of Bristol students, had successfully crossed the Pacific and was above Arizona, having traveled over 24,500 km since launch.

The University of Bristol Students for the Exploration and Development of Space (UBSEDS) launched their balloon on Monday, March 8. Powered by a single AA Lithium Energiser Battery (LR91) the balloon has been transmitting about 5dBm of Contestia 16/1000 on 434.600 MHz USB at 4 minute intervals as well as APRS during its flight at an altitude of about 11,000m.

The balloon has a diameter of 1.5m and the payload weighs just 21.3 grams. Despite the weight constraints the team have managed to employ sophisticated Geofencing technology to prevent the balloon transmitting when over certain countries and also to select different APRS frequencies depending on the territory being overflown.

UBSEDS14 information is available at

UBSEDS14 balloon launch

Useful High Altitude Balloon Links

One of the students involved in the project is Richard Meadows M0SBU. He took the amateur radio courses run by the Chelmsford Amateur Radio Society (CARS) at Danbury in Essex. Further information on the courses is available from the CARS Training Manager
Email: training2016 at

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