EOSS-310 Gateway to Space & Eaton MS Science Program

  • CU Boulder Gateway to Space program - 6 payloads
  • Eaton Middle School Science Program

04-09-2-21Payload Plans Rev A posted

One 3000g or two 1500g balloons. If two Lite balloons are flown, the payload plans are shown below:

Predictions are available here.

Flight Coordinator: 
KCØRPS
Event Date: 
Saturday, April 17, 2021 - 00:00 to 23:45
Alt Launch Date: 
Sunday, April 18, 2021
Launch Site: 
Flights: 

EOSS-310 Heavy

One 3000g balloon carrying CU-Boulder Gateway to Space BalloonSats and Eaton Middle School Science payloads

Balloon Type: 
Totex 3000g Latex
Parachute: 
12' Rocketman
Beacons: 
FrequencyCallsignTypeNotes
144.340 MHzAE0SS-12APRS / Digi EOSSAPrimary Beacon, Time slotted at 0:24 and 0:54
144.905KC0D-3Remote Release / DFSecondary Beacon, paired with release Charlie
Payload Plan: 
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:
        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).

        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)

        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
  • 145.045
  • 145.535
  • 145.645
  • 145.710
  • 145.765

 

Tactical Calls: 
TacticalCall SignNameNotes
Live Flight Tracking: 
To view live flight tracking, navigate to https://track.eoss.org