EOSS-360 AIAA RMS Sponsored DSST and Wheat Ridge and Northfield Launch - Recap

Submitted by Rob Wright on Tue, 05/07/2024 - 13:43

EOSS Flight 360 was launched from Deer Trail CO  May 18, 2024 at 7:07 am reaching an altitude of over 101,000ft.

 

The students (in over 20 cars) meet in Lindon CO to await landing information.  The arrival in Lindon was shortly after burst; however we followed the decent and as the parachute and payloads came closer we scanned the sky and finally saw them floating over highway 36.

 

It was a difficult retrieval, so the EOSS team brought the payloads to the students in Lindon.

 

 

 

Link for EOSS mileage reimbursement  https://forms.gle/qJjy47iTHF5ywDPJ6

Recap Gallery: 
Original Announcement: 

This flight is a single 3000g balloon for the Denver School of Science and Technology (DSST), Northfield HS, and Wheat Ridge HS. 

 

Flight Prediction https://www.eoss.org/predict/

 

Deer Trail Launch site layout.  

IF CLOUDS ARE AN ISSUE WE WILL SWITCH TO LITE FLIGHT STRINGS.  

EOSS 360 LITE PAYLOAD PLAN 

EOSS 361 LITE PAYLOAD PLAN

Event Date: 
Saturday, May 18, 2024 - 07:00 to 14:30
Flight Coordinator: 
Rob NØRPF
Launch Site: 
Deer Trail
Grid: 
Punkin Center X=30, Y=20. Grid Test N 39.00, W 103.00 = x 67.5, Y 30.3
Flights: 

EOSS-360 Heavy AIAA RMS Sponsored

This is an Non-exempt payload string flown under a 3000g balloon for AIAA RMS Sponsored DSST and Wheat Ridge and Northfield Launch

Balloon Type: 
3000g
Parachute: 
12 ft Rocketman with Remote Release Charlie
Beacons: 
FrequencyCallsignTypeNotes
145.710KC0D-3Remote Release/DFSecondary Beacon
144.340AE0SS-4APRS/Digi VOYAPrimary Beacon Time-slotted 0:21 & 0:51
Payload Plan: 
PDF icon EOSS-360 HEAVY Payload Plan REV B.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) RMRL repeater

        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 as to which talkgroup use will be made by the EOSS RF Coordinator on a per flight basis.

  • Rocky Mountain Wide Network – Talk Group 700 - Rocky Mountain Ham Radio has approval to the use "Wide" for flight operations.
  • Central Colorado Regional Network – Talk Group 720 - On occasion, EOSS may use the Central Colorado Regional Network (Talk Group 720).

        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

 

Tactical Calls: 
TacticalCall SignNameNotes
AlphaW9CNMike
BravoKBØYRZChris
CharlieNØRPF, KØBRARob, DougLaunch, then track
DeltaKØSCC, NØJPSStephen, JohnLaunch and Track
EchoKØNKK, KFØNLQNancy, Anne
Ground StationN2XGL, K5JKJeff, Randy, Tom
YankeeKEØYALBrad
GolfNØNDMLarryLaunch, then track
KiloKEØUWCGlenn
TangoKCØLJohnRemote from Texas
TR Breakfast: 
6:00am. IHOP. Limon