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.



Transmissions

The balloon transmits once every two per minutes.

UHF 434.6MHz

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.

APRS M0SBU-3

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.

Map

Statistics

  • Total distance traveled: 944.6km
  • Great circle distance: 877.5km
  • Flight duration: 19 hours
  • Maximum altitude: 12.3km
  • Countries passed through: gb fr be de

Plots

Resources

Listeners

Thank you to all listeners who tracked this flight!

Total: 46

Callsign Telemetry Lines Received Longest Path
M0SBU-ax gb 1538 6.8km
G8FJG_v gb 202 347.2km
G8FJG_v1 gb 201 347.2km
PE1ANS 163 295.8km
F5APQ fr 159 253.2km
G8KNN gb 98 325.4km
PB0AHX nl 92 321.0km
M0DNY-ax gb 62 62.3km
PE2BZ_home nl 61 259.4km
G6GZH gb 56 300.8km
F1OIL fr 44 273.4km
g0nzo gb 40 186.7km
JDL gb 37 140.6km
0x17 gb 32 299.5km
PA4FB nl 25 183.3km
ON0LB-10 24
DB0NOS 23
DL2AJB 17
G8DHE-1 gb 15 102.0km
DB0KH 11
F5ZIX-4 10
DB0ERF-10 10
DB0DOS-10 10
DL8KZ 8
DB0UT-10 6
F5RJM-10 5
LX0APS-2 4
M0OFC 3
DM2HB 3
2E0FSI-10 3
DG4DAA-13 3
DL3RIS 2
DM2HB-1 2
M0SBU gb 2 39.6km
MB7UR 1
PA3CEV-10 1
DC4FY-2 1
DC4ZZ 1
DL1JU-13 1
DL2WB-10 1
M0BPQ-1 1
DB0WZ 1
PA3GKF-10 1
DB0USL-2 1
M0SSK 1
F6DDS-1 1