Like UBSEDS13, the UBSEDS14 balloon was built from 50 micron thick PA-EVOH-PE multilayer film. It was built to 1.5 meters diameter (0.1m more than UBSEDS13) and flown with 21.3 grams of payload. It was filled with Helium to 13.0 grams of free lift and floated at an altitude of about 11km (36,000 ft).



Tracker

This tracker was based around our pico tracker with some modifications for low power and low temperature operation. It was powered from single AA Lithium Energiser Battery (LR91).

Transmissions

The balloon transmitted once per minute during the ascent, and once every 4 minutes thereafter.

UHF 434.6MHz

It uses the error-correcting Contestia 16/1000 mode on 434.6MHz USB.

The transmission power on this band was measured to be +5dBm on a similar board, which is well below the +10dBm limit for ISM band operation. Each packet was preceded by 10 seconds of 1Hz pips for manual alignment and a RSID tone for automatic alignment with suitable software (dl-fldigi for example).

To save power UHF transmissions are only made within the red lines on the geofence below.

APRS M0SBU-11 / AD6AM-11

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


The map above is drawn using data received from UHF and from APRS backlog frames. APRS backlog is where the tracker inserts information about where it was in the past into the comment field of an APRS packet that also contains the current position. This backlog allows the map to be drawn ex post even where there are no receivers.

Straight lines are visible where no data was recorded, usually because the battery voltage was too low.

Statistics

  • Total distance traveled: 35551.4km
  • Great circle distance: 2842.8km
  • Flight duration: 14 days, 1 hour
  • Maximum altitude: 12.0km
  • Countries passed through: gb fr es dz tn it gr bg ro ua ru kz uz kz mn cn kr jp us ma

Plots

Resources

Listeners

Thank you to all listeners who tracked this flight!

Total: 188

Callsign Telemetry Lines Received Longest Path
BACKLOG 217
G4AIU 106
0x17 gb 101 203.8km
G8DHE gb 82 272.5km
G8FJG_V gb 78 366.8km
G8DXZ gb 77 316.7km
M1ARI gb 70 147.7km
F-80106 fr 49 281.4km
G8DJN gb 48 257.2km
RW6HP-10 47
g0hdi gb 33 114.1km
RZ6HSP 29
M0ION gb 29 35.8km
SV2HNH-1 29
BI4JAQ-10 28
K7YI-4 27
AL7BX 27
M0SBU gb 26 15.4km
F5OPV-10 25
EA5HZZ 24
LZ1OCZ-1 20
9H1XE-1 20
W4DEX 19
EA5RCK-10 19
G6GZH gb 17 330.1km
JR9UKF-15 16
IW9GRL-12 16
EA8AJY-9 15
WB8ELK us 15 340.2km
JH4MGU-10 14
YO4RDJ-10 14
CU6NS 13
K4SOL-10 13
ARKAN 13
JH7GLZ-10 12
EA5URD-10 11
KG4PID-14 11
YM7KK 11
K5UTD 11
EA5AER-2 11
IW9HOD-1 11
LZ0BGN 11
ED4ZAF-3 10
KJ5FA-10 10
BD4KM-10 10
EA5AHQ-12 10
JH7JLB 10
N5JEP-1 10
KD5YCY-5 9
EUGENE 9
IQ9PA-13 9
N4ACT-5 9
JL8SSD-10 8
JR8IVS-10 8
N4YH-10 8
W5AOX-10 8
AL0I-05 us 7 86.0km
UR5FSV-2 7
W5AMZ-1 7
G8KNN gb 6 311.5km
MB7USX 6
N5VX-10 6
RA6LFJ-1 6
JE0HBT-1 6
9H1US-5 6
YO7GQZ-10 6
KC5TNB-1 6
KD7ZD-10 6
LZ3SP 5
N4ACT 5
SV6EXB-11 5
IW9FRA-10 5
EA4OF 5
LZ4NY-2 5
N1IEK-2 5
G1DYQ gb 5 166.4km
F1JRN 5
LZ0DAP-13 4
EA2RCH-14 4
KE5KUL 4
SV3AQO-10 4
NE4W-10 4
JA4XO-1 4
JA0QEV-10 4
JA0YCW-10 4
M0GQS 4
UA6LBJ-1 4
JA7LJQ-10 4
W4POX-5 4
WR4AGC-5 4
EA1FAQ 4
JJ8EMJ-3 4
YO8DHA-10 3
WA6KHG 3
JA5OJF 3
JA8ZQT-10 3
F4DBS-10 3
WA4BDS-10 3
YM7KO 3
F8PKP-10 3
F6DZR-3 3
KE5SXT-2 3
N5ALC 3
JR8YMH-3 3
YO4ISC-10 3
SV1UY-5 3
F4ETJ-1 3
K4HCK 3
LZ1OI-4 3
2
LZ1NY bg 2 198.1km
JG4WZP-10 2
W6PKT-5 2
NM5AK-5 2
N2NXS 2
EA5AHQ-10 2
SHEEP 2
KC0OOO-10 2
F1ZNQ-3 2
N9SIR-1 2
JA8EFI-10 2
JE4YIB-10 2
KM5VY-10 2
KJ4SNT 2
LZ0DAD 2
BH4JPA-10 2
JJ3CYE-1 2
KY7K-10 2
G6SQX 2
JM8ACU-10 2
AC5MR-3 2
ED1YCB-3 2
K4JH-1 2
9H1FJ-5 2
JH4YOP-10 2
LZ0BGM 2
F6CJP-10 2
K4FHK-10 1
N5CST-15 1
KD5ROK 1
W4VU-2 1
AE5NW-10 1
EA2EEL-5 1
SZ4KRD 1
KB7KFC-1 1
YO7LMU-2 1
KF5ZKR-2 1
JR8YJC-13 1
F5ZZC-4 1
YO3DEX-10 1
W8VFR-9 1
JA4YMC-10 1
N4TVC 1
G4BGQ gb 1 199.5km
K0OTZ-7 1
WB7ROB 1
SV2RCK-5 1
EB7GYR-1 1
CN8NY-10 1
JH7UAX-10 1
IT9AOO-2 1
JH8FWD-10 1
W5JTC 1
YO3KXL-10 1
IRONMT-2 1
KB0WLF-10 1
WW5RM-1 1
KC5BG 1
JA5HWI-10 1
JE8HLA-13 1
JA4FHV-10 1
JE3ZKC 1
KA5MGL 1
F5LRQ-3 1
SV1MNF-5 1
N5AAA-1 1
JQ1ZRE-10 1
F5PHW-3 1
JA7NR-10 1
KB4TYE-1 1
K2HAL-3 1
N5RN-10 1
KC4LU-2 1
N8DEU-5 1
N4GMF-4 1
ABAJO 1
ED2ZAE-5 1
JH6ETS-10 1