Bristol 434 MHz balloon launch

UBSEDS18 Solar Powered BalloonWeather permitting there will be a 434 MHz pico balloon launched from Bristol on Tuesday, February 28 at 0830 GMT.

Richard Meadows M0SBU from University of Bristol Students for the Exploration and Development of Space (UBSEDS) writes:

This launch is using a 1.5m envelope and the attempted float altitude will be about 12 km.

The payload is a new tracker design that uses an AX5043 radio. It will be transmitting pips, RSID and Contestia 16/1000 on 434.635 MHz USB, once every two minutes. Callsign “UBSEDS23”.

Between the Contestia transmissions the AX5043 radio will also be used to transmit GMSK at 24 ksymbol/s, centered on 434.637.5 MHz. It’s 4×4 interleaved, R=1/2 convolutional K=5, HDLC framing, whitened etc. as per the AX5043 manual.

This is concatenated with RS(255,223) to mop up some burst errors. IQ recordings of this might be useful so that the data can be extracted once a software decoder exists. Callsign “UBSEDS23G”.

Track the balloon online at https://tracker.habhub.org/

UBSEDS http://www.bristol-seds.co.uk/

Useful High Altitude Balloon links https://amsat-uk.org/beginners/balloons/

Richard M0SBU who is involved in the UBSEDS project took the amateur radio training courses run by the Chelmsford Amateur Radio Society (CARS) at Danbury in Essex. Further information on the courses is available from the CARS Training Coordinator, Christopher G0IPU
Tel: 07908-107951
Email: training2017 at g0mwt.org.uk
Web: http://g0mwt.org.uk/training

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/

UBSEDS18 around the world balloon

UBSEDS18 Solar Powered Balloon

UBSEDS18 Solar Powered Balloon

A UK student built balloon carrying APRS and 434 MHz payloads is expected to complete its 2nd circumnavigation of the northern hemisphere on Tuesday afternoon .

The solar powered UBSEDS18 was developed by students at Bristol University and launched on Wednesday, August 17. Since then it has traveled in an easterly direction for over 62,000 km and is expected in the Bay of Biscay off the New Aquitaine coast on September 20.

The inovative balloon utilizes a LIC1235R 40F li-ion supercapacitor to enabled continued transmission after sunset.

UBSEDS18
https://twitter.com/bristolseds
http://www.bristol-seds.co.uk/hab/flight/2016/08/17/ubseds18.html
https://tracker.habhub.org/#!mt=roadmap&mz=2&qm=All&f=UBSEDS18&q=UBSEDS18

Richard Meadows M0SBU, who worked on the development of UBSEDS18, took the amateur radio training courses run by the Chelmsford Amateur Radio Society (CARS) at Danbury in Essex. Further information on the courses is available from the CARS Training Coordinator, Christopher G0IPU
Tel: 07908-107951
Email: training2016 at g0mwt.org.uk
Web: http://g0mwt.org.uk/training

UK student balloon crosses Pacific

UBSEDS18 Solar Powered Balloon

UBSEDS18 Solar Powered Balloon

The UK balloon UBSEDS18 carrying payloads for APRS and 434 MHz has successfully crossed the Pacific, on the same day a USA amateur radio APRS balloon crossed the Atlantic.

The solar powered UBSEDS18 was developed by students from Bristol University and launched on Wednesday, August 17. Since then it has traveled in an easterly direction for 20,252 km completing the Pacific crossing on Thursday, September 1, 2016.

UBSEDS18
https://twitter.com/bristolseds
http://www.bristol-seds.co.uk/hab/flight/2016/08/17/ubseds18.html
https://tracker.habhub.org/#!mt=roadmap&mz=2&qm=All&f=UBSEDS18&q=UBSEDS18

The amateur radio APRS balloon CNSP30 was launched from California on August 25 and on September 1 crossed the coast of northern France. Its APRS signal was receivable across central and southern England.

CNSP30
https://twitter.com/K6RPT
http://www.cnsp-inc.com/cnsp-30/
http://aprs.fi/#!call=a%2FK6RPT-11&timerange=604800&tail=604800

Richard Meadows M0SBU, who worked on the development of UBSEDS18, took the amateur radio training courses run by the Chelmsford Amateur Radio Society (CARS) at Danbury in Essex. Further information on the courses is available from the CARS Training Coordinator, Christopher G0IPU
Tel: 07908-107951
Email: training2016 at g0mwt.org.uk
Web: http://g0mwt.org.uk/training

UBSEDS15 balloon launches from Bristol Saturday

UBSEDS balloon envelope

UBSEDS balloon envelope

In March the 434 MHz and APRS balloon UBSEDS14 flew around the northern hemisphere. On Saturday, April 30 a new balloon UBSEDS15 will be launched by the University of Bristol Students for the Exploration and Development of Space. The signal from the balloon may have a range of 400 km so should be receivable across the southern UK.

Richard Meadows M0SBU writes:

Another pico launch from Bristol this Saturday, April 30. The launch will be at 0900 ISH. As before the payload is transmitting on 434.600 MHz USB, with an output power of about +6dBm. Each transmission of Contestia 16/1000 will be preceded by 10 seconds of pips and RSID.

This payload uses solar panels to generate power. Hopefully the transmission rate will be once per minute during the day, and once every two minutes at night (if the payload operates at night). It’s also capable of transmitting APRS packets, but will only do so outside countries where the amateur license is not permitted airborne (like the UK).

It will probably head south quite quickly after launch, so trackers on the south coast are particularly appreciated. More details will appear on the website http://www.bristol-seds.co.uk/flights.html

UBSEDS14 tracker payload

UBSEDS tracker payload

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.

UBSEDS on Twitter https://twitter.com/bristolseds

Online real-time tracking of balloons http://tracker.habhub.org/

Useful High Altitude Balloon Links https://amsat-uk.org/beginners/balloons/

UBSEDS15 Solar Powered Balloon http://www.bristol-seds.co.uk/hab/flight/2016/04/30/ubseds15.html

UBSEDS14 around the world balloon http://www.bristol-seds.co.uk/hab/flight/2016/03/07/ubseds14.html

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 g0mwt.org.uk
Web: http://g0mwt.org.uk/training

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/

UK student balloon flies around the world

UBSEDS14 balloon track as at 1300 GMT March 21, 2016

UBSEDS14 balloon track as at 1300 GMT March 21, 2016

On Monday, March 21, 2016 the UBSEDS14 balloon, launched by University of Bristol students, completed its circumnavigation of the Northern Hemisphere.

UBSEDS14 balloon envelope

UBSEDS14 balloon envelope

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).

During the flight at an altitude of about 11,500m the balloon has been transmitting telemetry data at 4 minute intervals using 5 dBm output of Contestia 16/1000 on 434.600 MHz USB. Each telemetry packet is preceded by 10 seconds of 1Hz pips for manual alignment and a RSID tone for automatic alignment with suitable software. Additionally the payload has the capability for 144 MHz APRS.

UBSEDS14 tracker payload

UBSEDS14 tracker payload

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
http://www.bristol-seds.co.uk/hab/flight/2016/03/07/ubseds14.html

UBSEDS14 balloon launch
http://www.southgatearc.org/news/2016/march/ubseds14_balloon_launches_today.htm

Useful High Altitude Balloon Links https://amsat-uk.org/beginners/balloons/

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 g0mwt.org.uk
Web: http://g0mwt.org.uk/training

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/

UBSEDS14 balloon flying across Pacific

UBSEDS14 balloon flight track as at March 14, 2016

UBSEDS14 balloon flight track as at March 14, 2016

On Monday, March 14 the UBSEDS14 balloon, launched by University of Bristol students, passed over Japan and out towards the Pacific, having traveled over 15,497 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
http://www.bristol-seds.co.uk/hab/flight/2016/03/07/ubseds14.html

UBSEDS14 balloon launch
http://www.southgatearc.org/news/2016/march/ubseds14_balloon_launches_today.htm

Useful High Altitude Balloon Links https://amsat-uk.org/beginners/balloons/

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 g0mwt.org.uk
Web: http://g0mwt.org.uk/training

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/