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: K�ANI
  • APRS
    • Primary
      • 145.600 MHz
      • ID: K�ANI-11
    • Secondary
      • 445.975 MHz
      • ID: K�YUK-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