EOSS Upcoming Flights
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04/05/2025 - 00:00 to 23:45
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04/12/2025 - 15:00
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04/19/2025 - 00:00 to 23:45
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05/10/2025 - 00:00 to 23:45
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08/02/2025 - 00:00 to 23:45
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11/01/2025 - 00:00 to 23:45
EOSS-369 NDIA Flight
Flight has been postponed until Sunday! The launch will be at 0700, immediately after sunrise.
This balloon is sponsored by the Rocky Mountain Chapter of the National Defense Industrial Association (NDIA) and will carry many experiments from a number of schools across the US. These experiments will be collected into three payloads which include video, GPS, and data collection throughout the flight. Approximately 2,200 remote students from around the United States will fly experiments on this flight. Experiments will be managed and coordinated by Norm Black, KEØPAM, of NDIA.
Flight Coordinator:
NØMM
Event Date:
Sunday, March 23, 2025 - 00:00 to 23:45
Launch Site:
Flights:
EOSS-369 Heavy Rev D
Balloon Type:
Kaymont 2000g Latex
Parachute:
12 ft Rocketman with Remote Release Charlie
Beacons:
| Frequency | Callsign | Type | Notes |
|---|---|---|---|
| 145,645 | KC0D-3/JP04 | APRS/DF | |
| 144.340 | AEOSS-4/ JP05 | APRS/DIGI | Time slotted at 0:13 and 0:43/ Alias ="VOYA" |
Payload Plan:
FrequencyList:
EOSS Preflight Net @ 7 PM Mountain Time the preceding night:
The preflight net is hosted on the Fun Machine linked system https://www.we0fun.com/
EchoLink *CANONCTY* conference and on the TGIF DMR Network Node: 1997 Talkgroup 815
Denver area Frequencies:
- 449.225 MHz (-5 MHz Offset, 141.3 Hz CTCSS) Mt Thorodin
- 448.150 MHz (-5 MHz Offset, 141.3 Hz CTCSS) DIA
- 449.975 Mhz (-5 MHz Offset, 100 Hz CTCSS) Westcreek
- 447.525 MHz (-5 MHz Offset, 146.2 Hz CTCSS) Devils Head
Back up Pre Flight Net Frequencies
• 146.940 MHz (-600 KHz Offset, 103.5 Hz CTCSS) Rocky Mountain Radio League (RMRL) Repeater if the RMHAM machine is down
• 146.640 MHz (-600 KHz Offset, 100.0 Hz CTCSS) Denver Radio League (DRL) Repeater will serve as a backup to the backup repeater
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:
• 449.450 MHz (-5 MHz Offset, 103.5 Hz Tone) RMRL repeater
- 447.650 MHz (-5 MHz Offset, 103.5 Hz Tone) Cedar Point SkyHub Link repeater - will be linked to the 449.450 MHz machine
Simplex Frequencies:
• 446.100 MHz Balloon #1 Field Simplex
• 446.150 MHz Balloon #2 Field Simplex
• 446.200 MHz Balloon #3 Field Simplex
• 446.275 MHz Car to Car drive out Simplex
(Note that some radios assume these are repeater frequencies and attempt to put a 5 MHz offset in the transmit frequency automatically)
Digital Mobile Radio (DMR):
The decision to use Rocky Mountain Wide has been made by the EOSS RF Coordinator.
- Rocky Mountain Wide Network – Talk Group 700 - Rocky Mountain Ham Radio has approval to the use "Wide" for flight operations
Legacy 2M Simplex Frequency (not generally used due to desense/interference issues with the 2M APRS packets)
• 146.550 MHz Simplex
2M Direction Finding Frequencies:
- 144.340
- 144.360
- 144.905
- 145.535
- 145.645
- 145.710
- 145.765
TR Breakfast:
Optional Breakfast will be at the IHop in Limon at 6:00 am.
Tactical Calls:
| Tactical | Call Sign | Name | Navigator/Notes |
|---|---|---|---|
| Alpha | W9CN, NØJPS, N6BA | Mike Pappas. Jeff | John Spainhower |
| Bravo | |||
| Charlie | NØRPF | Rob | |
| Delta | KØSCC | Stephen | |
| Echo | |||
| Foxtrot | WAØGEH, NØMM | Marty Griffin | |
| Golf | NØNDM | Larry | |
| Ground Station | N2XGL | Jeff Shykula | |
| Hotel | KEØUWC, KFØMBR | Glenn, John | John Diubaldo |
| India | KEØPAM | Norm Black | /NDIA Sponsor |
| Juliet | KB0YRZ | Chris | |
| Yankee | KE0YAL | Brad | |
Live Flight Tracking:
To view live flight tracking, navigate to https://track.eoss.org