Westminster HS & Evergreen HS Flight

Two 3000g balloons (or four 1500g balloons) carrying Westminster and Evergreen High School science program payloads. Note that this is a Friday flight.

Predictions are located here. Scroll down to the date of your flight and click on the selected launch site

Flight Coordinator: 
KCØRPS
Event Date: 
Friday, December 10, 2021 - 00:00 to 23:45
Alt Launch Date: 
Saturday, December 11, 2021
Launch Site: 
Flights: 

EOSS-320 Heavy - Westminster High School

A 3000g balloon carrying student-built payloads

If the skys are cloudy, the payloads will be split onto two 1500g balloons

  • EOSS-320 Lite
  • EOSS-321 Lite
Balloon Type: 
Totex 3000g Latex
Parachute: 
12-foot Rocketman
Beacons: 
Beacons
FrequencyCallsignTypeNotes
144.340 MHzAE0SS-12APRSPrimary, Timeslotted on 0:27 & 0:57
144.905 MHzKC0D-2APRS/DF/Remote ReleaseSecondary

EOSS-321 Heavy - Evergreen High School

A 3000g balloon carrying science payloads built by Evergreen High School students.

If the sky is cloudy on launch day, the payloads will be split onto two 1500g balloons:

Balloon Type: 
Totex 3000g Latex
Parachute: 
12-foot Rocketman
Beacons: 
Beacons
FrequencyCallsignTypeNotes
144.340 MHzAE0SS-13APRSPrimary, Timeslotted on 0:07 & 0:37
145.645 MHzKC0D-1APRS/DF/Remote ReleaseSecondary
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
  • 145.535
  • 145.645
  • 145.710
  • 145.765

 

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