EOSS-336/337 COSGC Spring Launch - Recap

KCØRPS's picture
Submitted by KCØRPS on Fri, 03/24/2023 - 15:04

A 3000g balloon and a 1500g balloon were launched from Deer Trail, Colorado on Saturday April 1, 2023. These balloons carried payloads developed by Colorado Space Grant Consortium students. The 3000g balloon reached 107,835 feet and the 1500g balloon burst at 63,885 ft. The balloons landed north of Stratton, Colorado.

Mileage link for club members  https://forms.gle/qJjy47iTHF5ywDPJ6

Recap Gallery: 
Original Announcement: 

One 3000gm and one 1500gm (or three 1500g) balloons to carry Colorado Space Grant Consortium student payloads will be launched from Deer Trail Colorado.

If the cloud cover exceeds 5/10ths then the balloons will be reconfigured as three 1500g balloons as follows:

Emailed to group

Event Date: 
Saturday, April 1, 2023 - 00:00 to 23:45
Flight Coordinator: 
Nancy KØNKK
Launch Site: 
Deer Trail
Grid: 
Grid location is Last Chance X 30 Y 50 Grid Test: N 40.000 W 103.000 X 61.3 Y 67.9 336 H Predict: 19 mi NE– Vona (NS CR-38 & EW CR-KK) (X 89.4 Y 34.1) 337 H Predict: 3 mi SE – Vona (NS CR-25 & EW CR-T) (X 77.3 Y 18.6)
Flights: 

EOSS-336 Heavy

A 3000g balloon to carry COSGC BalloonSats

Balloon Type: 
Totex 3000g Latex
Parachute: 
12 ft Rocketman
Beacons: 
Beacons
FrequencyCallsignTypeNotes
144.905 MHzKC0D-14Remote Release/DFTOP, Secondary Beacon
144.340 MHzAE0SS-12APRS/Digi EOSSABottom, Primary Beacon, Timeslot 0:27 & 0:57
Payload Plan: 
PDF icon EOSS-336 Heavy Rev C.pdf

EOSS-337 Lite

A 1500g balloon to carry COSGC BalloonSats

Balloon Type: 
Totex 1500g Latex
Parachute: 
12 ft Rocketman
Beacons: 
FrequencyCallsignTypeNotes
145.645 MHzKC0D-1Remote Release/DFTOP, Secondary Beacon
144.340 MHzAE0SS-13APRS/Digi EOSSXBottom, Primary Beacon, Timeslot 0:10 & 0:40
Payload Plan: 
PDF icon EOSS-337 Lite Rev C.pdf
FrequencyList: 

EOSS Preflight Net @ 7 PM Mountain Time preceding night:
        •  449.225 MHz (-5 MHz Offset, 141.3 Hz CTCSS) Rocky Mountain Ham Radio (RMHAM) Repeater and EchoLink *CANONCTY* conference and the Fun Machine linked system
        • 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 

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:
        Analog Repeaters:
        • 449.450 MHz (-5 MHz Offset, 103.5 Hz Tone) RMRL repeater (Assuming we are flying out of Windsor).
        • 448.450 MHz (-5 MHz Offset, 100.0 Hz Tone) PPFMA repeater (Assuming we are flying out of Deer Trail).

        DMR Repeaters:
        • RMHAM DMR System, Talkgroup 700 (Wide)

        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)

2M Direction Finding Frequencies:

  • 144.340
  • 144.360
  • 144.905
  • 145.535
  • 145.645
  • 145.710
  • 145.765 
Tactical Calls: 
TacticalCall SignNameNotes
AlphaWAØGEH, KCØDMarty, Mark
BravoW9CN, NØJPSMike, John
CharlieKØNKKNancy (Flight Coordinator)
DeltaKØSCCStephen, Daryl
EchoKBØYRZChris
Ground StationN2XGL, K5JKJeff, Tom
Yankee
TangoKCØLJohn (Texas Remote)
Launch TeamNØNDM, NØFTI, KDØNTLarry, Steve, Lee
IndiaKEØUWCGlenn
FoxtrotK0BRADoug
TR Breakfast: 
IHOP in Limon at 6:00AM.