The UBSEDS17 balloon was built from 50 micron thick PA-EVOH-PE multilayer film and was 1.9 meters in diameter. This is 0.4m more than the usual 1.5m diameter. The larger size meant the longest axis of the balloon and payload combined was more than 2 meters, and so a NOTAM was required and obtained for the launch.

The payload weight was 25 grams, and the free lift was 15.8 grams.

The flight reached 11.4km before the envelope burst, and it landed in Kent.

Tracker

The tracker was similar to that used for UBSEDS15, but with an additional 400mW amplifier section for APRS on 145.825 MHz. This was never used in flight becuase the balloon did not leave the UK (where airbourne AR is not permitted).

Transmissions

The balloon transmits approximately once every 30 seconds.

UHF 434.6MHz

It uses the error-correcting Contestia 16/1000 mode on 434.612.5MHz USB.

Map

Statistics

• Total distance traveled: 241.5km
• Great circle distance: 229.0km
• Flight duration: 4 hours
• Maximum altitude: 11.5km
• Countries passed through:

Plots

Resources

• HAB Telemetry Visualisation
• KML Flight Map
• Superpressure parameters for this flight

Listeners

Thank you to all listeners who tracked this flight!

Total: 23

Callsign	Telemetry Lines Received	Longest Path
PB0AHX-websdr	373	482.2km
0x17	338	305.0km
G8KNN	294	186.8km
G4YHE	259	142.3km
G8FJG_v	226	131.8km
F5APQ	223	270.7km
G1DYQ	193	222.8km
G0WXI	174	153.8km
NLincs	132	286.0km
M0UPU	121	324.8km
G8DHE-1	112	78.9km
M0SBU	112	40.7km
G1BLO	98	140.7km
PE2BZ	94	371.8km
G8DHE-2	26	77.1km
g0hdi	14	77.0km
M0ZBU	13	75.6km
G8FJG_h	10	54.5km
M1BXF	6	117.7km
SA6BSS	3	1131.4km
G4ERR	3
PB0AHX	2	483.6km
PD5TON	1	326.1km