EOSS-384/385 Metro State University - Intro2Space - Recap

KCØRPS's picture
Submitted by KCØRPS on Wed, 10/29/2025 - 12:43

On Sunday, November 2, 2025, two 3000g balloons were launched from Wiggins High School, carrying fourteen Metro State University Intro2Space payloads. Because of an excessive long prediction for Saturday, the flight was delayed until Sunday. The weather was cool but managable. The balloons flew as follows:

    • EOSS-384  was launched at 6:57 am MST and reported a maximum altitude of 101,770 ft MSL. The balloon landed 59.95 miles down range and landed southeast of Anton Colorado, south of Federal Highway 36 and east of county road EE. The students hiked 0.65 miles into a mowed field to retrieve their payloads. 
    • EOSS-385 was launched at 7:19 am MST and reported a maximum altitude of 95,809 ft MSL. The balloon landed 56.07 miles down range and landed northwest of Anton Colorado, immediately north of Federal Highway 36, to the west of State Highway 63. It was a short walk to pick up the payloads. 

EOSS member mileage reimbursement submission here

 

Recap Gallery: 
Original Announcement: 

NOTE: The flight has been changed to Sunday, November 2, 2025 from Wiggins School (directions here) in Wiggins Colorado. WARNING: Daylight Savings Time ends on Saturday night. The launch will take place at 6:50 am MST.  

This will be two 3000g Heavy balloon or three 1500g Lite balloons carrying student-built payloads from the Metro State University Into to Spece program.

  • 10-19-2025Payload Plans Rev A posted
  • 10-30-2025Payload Plans Rev B posted
  • 10-31-2025Payload Plans Rev C posted

If cloud cover exceeds 5/10ths we will fly three exempt balloons as follows:

Predictions are shown at www.eoss.org/predict. Scroll to the correct date and launch site.

Participation spreadsheet can be accessed here (after signing into MS Teams)

Event Date: 
Saturday, November 1, 2025 - 00:00 to 23:45
Flight Coordinator: 
KCØRPS
Launch Site: 
Wiggins
Flights: 

EOSS-384 Heavy

One 3000g balloon carrying MSU Intro2Space payloads

Balloon Type: 
Totex 3000g Latex
Parachute: 
12 ft Rocketman with Remote Release Baker
Beacons: 
beacons
FrequencyCallsignTypeNotes
144.905 MHzKC0D-1Remote Release/DFTOP, Secondary Beacon
432.675 MHzAE0SSHorus Binary beaconEOSS-1 863
144.340 MHzAE0SS-3APRS/Digi AEØSSPrimary Beacon Timeslotted 0:20 & 0:50
Payload Plan: 
PDF icon EOSS-384 Heavy Rev C.pdf

EOSS-385 Heavy

One 3000g balloon carrying MSU Intro2Space payloads

Balloon Type: 
Totex 3000g Latex
Parachute: 
12 ft Rocketman with Remote Release Adam
Beacons: 
beacons
FrequencyCallsignTypeNotes
145.645 MHzKC0D-2Remote Release/DFTOP, Secondary Beacon
432.625 MHzAE0SSHorus Binary beaconEOSS-2 864
144.340 MHzAE0SS-2APRS/Digi DISCPrimary Beacon Timeslotted 0:08 & 0:38
Payload Plan: 
PDF icon EOSS-385 Heavy Rev C.pdf
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 Frequincies

        • 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) Mestaa'éhehe Mountain

        • 447.425 MHz (-5 MHz Offset, 103.5 Hz Tone) Akron CO

 

        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):

  • 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
  • 144.905
  • 145.645

Horus Binary Trackers Frequencies

  • EOSS-1 432.675 MHz
  • EOSS-2 432.625 MHz
Tactical Calls: 
Trackers
TacticalCall SignNameNotes
AlphaW9CN, NØJDMike, JeffT&R Coordinator
BravoKCØRPS, WØGVJim, Gerry
CharlieKEØYALBrad
DeltaKØSCC, NØJPSStephen, John, Jeremy
EchoKEØUWC, KFØMBRGlenn, John
FoxtrotKØNKK, KFØNLQNancy, Anne
GolfNØNDMLarry
Ground StationAEØSS, N2XGLGround Station, Jeff
HotelN3RJORandyMSU Lead
IndiaKDØNKEKatieRaeMSU Instructor
JulietNØMMDoug
TR Breakfast: 
Tracker Breakfast is 6:00 am at IHOP located at the Flying-J truck stop in Limon