The UBSEDS23 balloon was built from 50 micron thick PA-EVOH-PE multilayer film and was 1.5 meters in diameter. The payload weight was 27 grams, and the free lift was 15.1 grams. The balloon was pre-stretched even more than usual.
The flight floated at 12.2km altitude (40,000 ft) for about 5 hours, before decending into Germany.
This flight also tested a GMSK data mode using AX5043 radios and the callsign UBSEDS23G.
The balloon transmits once every two per minutes.
It uses the error-correcting Contestia 16/1000 mode on 434.635MHz USB.
Some countries do not allow UHF ISM band operation. Therefore UHF is only transmitted outside the red lines on the geofence below.
For many countries the balloon transmits APRS packets on local frequencies. In particular this is 144.8MHz in Europe, 144.66MHz in Japan and 144.39MHz in North America.
The balloon also transmits APRS packets on 145.825 MHz for amateur satellite operation, and uses a higher power amplifer for this (approximately +26dBm output). The high power amplifier is also used on every 5th terrestrial APRS packet.
Some countries do not allow aeronautical mobile operation, which limits the balloon from using the amateur bands. Therefore APRS is only transmitted outside the red lines on the geofence below.
- Total distance traveled:
- Great circle distance:
- Flight duration:
- Maximum altitude:
- Countries passed through:
- Geoff G8DHE Images
- HAB Telemetry Visualisation
- KML Flight Map
- Superpressure parameters for this flight
Thank you to all listeners who tracked this flight!