Announcement of EOSS-77/78

WARNING: Launch time moved to an earlier hour

LAUNCH DATE: June 6, 2004
LAUNCH TIME:

  • eoss77 - 06:00 am (12:00 UTC)
  • eoss78 - 06:45 am (12:45 UTC)

LAUNCH SITE: Deer Trail, Co (Directions)


EOSS Frequencies:

Global (both flights)

  • Preflight Net:
    • 147.225 MHz 8 pm MDT preceding Friday night
      • 145.160 MHz simulcast in the Springs
    • 146.640 MHz will serve as a backup frequency
  • Tracking and Recovery Operations
    • 448.450 MHz PPFMA Repeater (100 Hz tone)
    • 146.550 MHz simplex (same simplex for field and launch ops)
    • There may be FRS operations see THIS PAGE for a list of channel numbers and their associated UHF Frequencies.
    • 7.228 MHz HF

EOSS-77 Frequencies

  • Beacon
    • 147.555 MHz
    • ID: W5VSI in CW
  • APRS
    • 144.340 MHz
    • ID: W5VSI-11

University Transmitters on EOSS-77

  • APRS (University of Montana)
    • 446.050 MHz
    • ID: K7MSU-11
  • Beacon (University of Hawaii)
    • 436.000 MHz

EOSS-78 Frequencies

  • Beacon
    • 145.600 MHz CW
    • ID: KØANI
  • APRS
    • Primary
      • 145.600 MHz
      • ID: KØANI-11
    • Secondary
      • 445.975 MHz
      • ID: KØYUK-11

University Transmitters on EOSS-78

  • Telemetry (University of Texas)
    • 900 MHz Spread Spectrum Frequency Hopping 0.14 watt

Flight Systems:

Balloon Manufacturer Kaymont
Balloon Type latex
Balloon Size 3000 gram
Payload eoss-77 = 20.0, eoss-78 = 20.7
Free Lift % calculated at fill
Ascent Rate 1000 fpm estimated
Descent Rate  900 fpm estimated
Parachute 10 ft. diameter
Peak Altitude determined after flight
Launch Conditions determined at launch

Payload Configuration:

Updated for the Sunday flight configuration


EOSS Grid:

Location Grid X Grid Y
Last Chance 40 55
Selbert 79 25
Limon 34.5 22.5
Calhan 2.5 7
Launch Point (Deer Trail) 16.19 46.07
Touchdown 36.3 31.1

Tactical Callsigns:

Tactical Callsign Name Notes
Alpha WA0GEH Marty Coordinator
Bravo W0CBH Benjie Asst. Coordinator
Charlie K0JLZ Jim  
Charlie 2 K0AEM Richard  
Delta K0ANN Ann (not participating, doing as public service event)
Echo N5LPZ Mike  
Foxtrot N0PUF Dan  
Golf KB0UBZ Ben  
Kilo N0LP Nick Ground Station

Notes:

General

HF Radio

Usually starts 30 minutes


Who Can Monitor

If you are within the green shaded area, you should be able to monitor the APRS data

 

maintained by Rick von Glahn
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