The UBSEDS20 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 balloon carried two payloads. UBSEDS19 was the backup tracker (mass 13 grams), and UBSEDS20 was the main Raspberry Pi Zero payload (mass 62 grams). The free lift was about 25 grams.

The initial float altiude was 12.5km. The total payload weight was of 75 grams.

Tracker

This was the first test of our pico-pi board.

Backup Tracker

The UBSEDS19 backup tracker was powered from a single AAA Lithium Energiser battery. It transmitted Contestia 16/1000 with pips and RSID on 434.615 MHz USB, once per minute below 8km altitude and every two minutes otherwise.

The board is the same design as UBSEDS13 and UBSEDS14 - except configured for a faster update rate and using a AAA battery.

Images

The Raspbery Pi Camera (Sony IMX219) captured images of the envelope during flight.

Envelope

Annotated image of envelope

Map

A map of the images taken by this flight can be found HERE!

Statistics

Total distance traveled: 6421.6km
Great circle distance: 4140.8km
Flight duration: 4 days, 6 hours
Maximum altitude: 12.9km
Countries passed through:

Plots

Resources

Listeners

Thank you to all listeners who tracked this flight!

Total: 143

Callsign	Telemetry Lines Received	Longest Path
G0WXI	857	420.2km
G8KNN	844	433.2km
PE2BZ	835	391.1km
PB0AHX	833	410.4km
PA3CWQ	771	377.3km
F1OIL	766	302.3km
ON5LT	765	327.0km
PE1ANS	737	307.9km
PE2G	606	463.7km
G8FJG	565
G6GZH	554	432.7km
BACKLOG	536
PA0RPA	499	280.9km
0x17	469	401.3km
M0DNY/WEBSDR	452	462.2km
G8ZBJ	438	415.1km
G1DYQ	410	365.7km
G4DJB	367	389.0km
G0HWW	358	372.6km
F21061	348	313.8km
G8DHE-ubs20	339	200.5km
G4YHE	299	225.6km
G8FJG_v	296	438.1km
PD5TON	287	277.7km
M0UPU	267	437.0km
M1ARI/3.2c	257	258.9km
G8DHE-2	245	219.8km
YOOSHKY	244	485.6km
G6SUQ	243	356.1km
jijdaar	238	400.2km
M6DRS	224
G6SSN	196	393.4km
G0TDJ	193	280.9km
M0ZBU	190	246.8km
G8DXZ	179	292.4km
PE2BZhome	164
HA6NN	163	362.7km
G0IOZ	152
G8FJG.20	151
g0nzo	146	438.6km
M0SBU	138	159.1km
PE0SAT	133	274.4km
G8JNJ	106	399.5km
GOCXW	84	135.0km
pe1dh	79
OM5KV	79	318.6km
OK1JRA-1	76
PE1CME	73	377.8km
9A4DE	50	65.4km
S51WND-11	50
G1BLO	48	95.5km
IR4AZ	42
IV3GFJ-11	41
YOO	38	1157.3km
G7SVI	37	228.3km
HB9FUF	31	296.7km
DL5MAM	28
OE3REC-11	25
S59DTB-10	25
OK5TVR-1	24
HA5CD	21
IZ4UFQ-10	20
M1ARI/3.2r	20	102.3km
RevSpace	20	371.2km
RW6HP-10	19
S53XX-10	19
IZ3LSV-4	16
S52PIR-2	16
OE5ERN-10	16
M1ARI/3.1r	14	101.6km
S56IUL-11	13
OE5REO-10	12
DM0FFL-10	11
M0BPQ-1	10
IV3GCH	9
S57AJJ-10	9
IR3DV-10	8
G1UAF-10	8
DL2MEL-10	8
G4ERR	8	185.0km
SUWS	8	269.8km
DB0FFL-10	8
OE5EEP-10	7
F6DZR-3	7
M0SCJ	6	157.4km
9A1IW-10	6
G4ZLZ-1	6
S56JCH-11	6
OE3TRB-15	5
ON0LRG-2	5
IQ3UD	5
S55EI-10	5
YO4RDJ-10	5
F4DBS-10	5
OE3MZC-2	4
MB7UMS	4
OE3PAS-15	4
DL6FCD	4
IQ2CY	4
9A1Z	4
DB0PAS-10	4
OE3RNB-10	3
OK1LOL-1	3
Zaltbommel	3	336.2km
DO7HS-10	3
DG7DCG-10	3
IR3EO	3
DB0MM	2
YO4ISC-10	2
OK1KZE-1	2
OK2KOJ-1	2
9A1AYZ-10	2
UR5FSV-2	2
IK3ITI	2
S57D-6	2
HB9AK-5	2
HB9AK-2	2
F6KBS-3	1
G8DHE-ubseds	1	134.2km
S54F	1
IR2DD	1
DG2RBF-10	1
DG4MLA-10	1
F4GUK-10	1
OE5XDO-10	1
OM5AMX-1	1
HB9KOM-1	1
OK3MS	1
DB0MHB-1	1
IR3BT	1
UB9JBL-10	1
OE5EBO-10	1
S55MA-1	1
PD2ATG-10	1
IR2Y	1
OE3MNS-8	1
DB0FEU-1	1
OE6XAR-1	1
OE7TWI-10	1
DB0WGS-10	1
OE3XFW-10	1
S59ACP-10	1
F6GVH-1	1