The UBSEDS22 balloon was built from 50 micron thick PA-EVOH-PE multilayer film and was 1.9 meters in diameter. This size means the longest axis of the balloon and payload combined is more than 2 meters, and so a NOTAM was required and obtained for the launch.

The primary payload is a Iridium Beacon built by Paul Clark from Durham University. There’s more details about this on his github and in this hackaday article.

The secondary payload is a UBSEDS tracker that uses solar power only, and hence only operates during daylight.

Mass
Iridium Beacon 76g
UBSEDS Tracker 15g
Free Lift 19g
Total Lift 110g

The balloon achieved a stable altitude of 12.5 km 3.5 hours into the flight. Given the total payload weight of 91 grams, we believe this is the heaviest amatuer superpressure float to date!



Iridium Beacon

There’s a write-up about the operation of this Beacon on Paul’s github. The becaon ceased operation after 7 days of flight.

Transmissions

The balloon transmits approximately once every two minutes.

UHF 434.6MHz

It uses the error-correcting Contestia 16/1000 mode on 434.637.5MHz 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-2 / AD6AM-2

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.

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: 89104.7km
  • Great circle distance: 2154.7km
  • Flight duration: 69 days, 13 hours
  • Maximum altitude: 12.7km
  • Countries passed through: gb fr ma us mx us false se ee lv kz ca ru us ca gl false fi

Plots

Resources

Listeners

Thank you to all listeners who tracked this flight!

Total: 190

Callsign Telemetry Lines Received Longest Path
PIGEON 379
VA7WS-1 312
BACKLOG 311
VE6NH 239
SK0BJ-10 126
MILLET 124
KNAPPA 121
K9VD 102
WA7DRE 96
OH2FQV fi 88 368.9km
WINTHP 83
KL3MM 75
F5PHW-3 73
DEV88 gb 67 203.7km
VE6RFM-1 66
VE6HFD 62
W7MB-10 58
VE5HFR 56
OH6UW fi 51 148.2km
WEBER 51
SA4BKJ-1 46
VA6GA-10 42
OH3LWP fi 42 437.8km
LAMONT 41
ES8TJM ee 41 93.6km
F4GKQ-3 39
LD9AS 38
LA5FSA 38
G8FJG_v gb 36 383.6km
MAZAMA 35
VE6EN-1 35
G8FJG_v1 gb 35 383.6km
VE2MYC 34
N7GWT 32
VE7OGO-1 31
CALGRY 31
KITTAS 31
KA7O-15 30
KC5EZZ-11 30
SEDRO 30
0x17 gb 29 185.9km
LD9TF 29
LA2MLA 28
EA5AHQ-10 28
VA6KRM-10 28
SK0SX-2 27
WB7GR-10 27
KD5YCY-5 26
VE7QMR-2 26
EB1TK-5 25
LA9UI-2 24
W7EEE 24
VA7HYD-1 23
SUNLGT 22
NW7RG-10 21
WA6KHG 20
LD2GI 19
KE5WVC-2 19
OH3DP fi 18 334.1km
LA3LJA-10 18
SK2HG-10 18
LA7VRA-3 17
LD3HV 17
LA1HSA-2 17
F5LRQ-3 17
OH8MBN 15 101.3km
VE7PKE 15
EUGENE 15
W3ISZ-1 15
WA0MFZ-5 15
sa6bss se 15 390.2km
GW8VFQ-1 14
KB7STN-3 14
SM3ULC 13 42.7km
W0MUD-1 13
WB5TZJ 13
AE6BL-9 13
K6MAR-10 12
G1BLO gb 12 168.0km
ES2MA-2 12
K7KCA-1 12
LD2GB 11
OH6CT fi 11 70.0km
WB7QAZ-10 10
SM5HUA-1 10
W5UOK-10 10
OH3W fi 9 301.3km
W7BOZ 9
ED2ZAD-5 9
SM1NVP-10 9
ABAJO 9
G0MAS 8
LA5A 8
K6TZ-9 8
W7GC-3 8
WA5LNL 8
KR6ZY-15 7
OH9FNQ-9 7
WD5DDH-1 7
LA1PKA-10 7
F5RJM-10 7
VA6TEC-10 7
LA1KTA 7
VE6XVK-1 6
es8tjm ee 6 119.5km
NA7Q-2 6
K5UTD 6
LA2IKA-10 6
LA6LOA 6
OH1KH-2 6
K6TJS 6
VE6CWS 5
K7NVH-1 5
AF5WO-10 5
W5HKR 5
VE7RLE 5
LA5VM-2 4
SK7CA-1 4
EA5URV-10 4
EB7GYR-1 4
W6TZI-1 4
W7QQA-2 4
SM2UHF-9 3
YL2RMK-1 3
JDL gb 3 197.8km
LA3XTA 3
W7IG 3
W5SI-2 3
VA2CMQ-3 3
ED1YAP-3 3
VE7RCK-10 3
NG6B-2 3
N5QHO-1 3
N7OKG-1 2
SM5OEM-1 2
K6BJ-3 2
WB9VXY 2
AF7DX-1 2
EA5GPC-11 2
VE6HFD-3 2
LB8CC-10 2
AA6I-1 2
VA7ZAT-2 2
N7NIX-1 2
F6DZR-3 2
KF7VOP 2
VE7MKF-1 2
G6SQX 2
F4BEA-4 2
F5ZIX-4 1
ELKO 1
SK0SX-1 1
KE5SXT-10 1
VA7OGO-13 1
W7KKE 1
N7ER-10 1
N7SET 1
NG7W 1
WA7NWP-6 1
VE7ILM-10 1
N7TNG-1 1
W6IA 1
SK2GJ 1
N7YET 1
MB7UST 1
NN5DX-9 1
KK7JX-10 1
OH3MN 1
VE6RBN-1 1
OH5GDN 1
WD4KAV 1
OH6HFX 1
KK5AN-10 1
F4FAP 1
OH3UW 1
W1IQS 1
OH5AA 1
WA7VC-10 1
KF7DRV-3 1
N5PSP-2 1
VA6KRK-10 1
K6CPP 1
ED1ZAR-3 1
SM3XIK-1 1
W6BHZ-5 1
KD7GIZ-10 1
KA6IYS 1
KB7UVC 1
AL7BX 1
W5EVH-11 1