EOSS Upcoming Flights
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08/15/2026 - 00:00 to 23:45
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10/17/2026 - 00:00 to 23:45
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10/31/2026 - 00:00 to 23:45
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11/14/2026 - 00:00 to 23:45
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04/17/2027 - 00:00 to 23:45
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04/24/2027 - 00:00 to 23:45
EOSS-403 Great Plains Superlaunch - Recap
On June 20, 2026 a 1500g balloon was launched as part of the Great Plains Superlaunch mass launch from Pella, Iowa. The balloon reached an altitude of 101,342 ft, burst, and descended into power lines near West Point, Iowa.
Recap Gallery:
Original Announcement:
This is one 1500g latex balloon launched as part of GPSL mass launch.
Event Date:
Saturday, June 20, 2026 - 00:00 to 23:45
Flight Coordinator:
KCØRPS
Flights:
EOSS-403 Lite
Balloon Type:
Totex 1500g Latex
Parachute:
10 ft Rocketman
Beacons:
| Frequency | Callsign | Type | Notes |
|---|---|---|---|
| 145.645 MHz | KCØD-2 | Remote Release/DF | TOP, Secondary Beacon |
| N991SS | ADS-B | ||
| 432.680 MHz | EOSS-2 864 | Horus Binary v3 beacon | |
| 432.780 MHz | EOSS-1 863 | Horus Binary v3 beacon | |
| 144.340 MHz | K0SCC-13 | APRS/Digital EOSSG | BOTTOM beacon, timeslotted :14 & :44 |
Payload Plan:
FrequencyList:
EOSS Preflight Net will be in-person at the conference:
Flight Day:
Launch Site:
• 446.050 MHz Simplex
(Note that some radios assume these are repeater frequencies and attempt to put a 5 MHz offset in the transmit frequency automatically)
Track & Recovery Operations:
Repeaters:
• TBD
Simplex Frequencies:
• 446.100 MHz (no PL) Field Simplex for all trackers
• 446.150 MHz Field Simplex for EOSS trackers
Digital Mobile Radio (DMR):
- not likely available
2M Direction Finding Frequencies:
- 144.340
- 145.645
Tactical Calls:
| Tactical | Call Sign | Name | Notes |
|---|---|---|---|
| Alpha | NØNDM, KBØYRZ | Larry, Chris | |
| Bravo | KCØRPS, KFØNLQ, Randy | Jim, Anne, Randy | |
TR Breakfast:
At the hotel prior to launch