Announcement of EOSS-112

LAUNCH DATE: 01-October-2006
LAUNCH TIME: 8:30 am MDT (14:30 UTC)
LAUNCH SITE: Windsor, CO (driving directions)

Pre-Flight Information

On Air Nets

Check into the weekly EOSS net every Tuesday evening, except the 2nd Tuesday of the month when we hold our face to face meetings.

Pre-Flight Coordination Net

The evening prior to flight we hold a coordination net to assign the grid information and tactical callsigns. Any last minute information, launch time changes, launch location changes, maybe even a cancellation will be announced on this net.

A net will be held Friday night to spread the word of a 1 day delay, the regular net will happen on Saturday night at 8:00 PM MDT.

Tracking and Recovery Team
Flight Day Breakfast

  • Talkin: 449.450 MHz
  • Time: 06:30 MDT
  • Location: Memories Restaurant
    • 725 Main St, Fort Morgan, CO
    • (970) 867-8205

EOSS Flight Day Frequencies:

Global Frequencies

Balloon Frequencies

  • Beacon
    • 147.555 MHz
      • ID: AE0SS (CW)
    • 145.600 MHz
      • ID: K0YUK-11
      • Tracking Tone then CW ID then APRS
  • 445.975 MHz
  • ID: K0ANI-13
  • Tracking Tone then CW ID then APRS
  • APRS
  • 144.340 MHz
  • ID: AE�SS-11
  • Node: BALNOD
  • APRS Time Slotted Every 30 seconds at 0:00 and 0:30
  • power up at 58 seconds past the GPS minute to properly slot telemetry
  • 145.600 MHz (flight Qualify)
  • ID: K0YUK-11
  • Tracking Tone then CW ID then APRS
  • 445.975 MHz (flight Qualify)
  • ID: K0ANI-13
  • Tracking Tone then CW ID then APRS

Flight Systems:

Balloon Manufacturer Kaysam
Balloon Type latex
Balloon Size 3000 gram
Payload ?? lbs
Free Lift % calculated at fill
Ascent Rate 1100 fpm estimated
Descent Rate 910 fpm estimated
Parachute 10 ft
Peak Altitude determined after flight
Launch Conditions determined at launch


Payload Configuration:

Tracking and Recovery Info:

(as of Sunday Morning , 10/01/06 01:15 MDT)


Location X Y
West Junct. of SR-14 and SR-71 45 35
Peetz 75 59.3
Otis 82.6 3
Roggin 8 4.5
Touchdown (see Prediction Page)

note: During the net I copied down 79, 59.3 for Peetz. However, I received an email with the above x value of 75. So, be forewarned. All other coordinates agree.

Tactical Callsigns

Tactical Callsign Name Notes
Alpha N0NDM, W0CBH Larry and Benjie Tracking and Recovery Coordinator
Bravo N0MPM Mike  
Charlie KC0RPS, W0NFW Jim and George  
Delta K0SCC Steve  
Echo KC0VJE Louis  
Foxtrot WA0GEH, N0AUS Marty and Al  
Golf WB0DKT Glenn and Darren  
Hotel KB0YRZ Chris  
India AE0SS Nick Ground Station

Internet Gateway Stations:

Future I-Gaters:

Check out the EOSS I-Gate page for information on how to participate and why we need you.

Current I-Gate Station:

If you are present at your iGate during the flight try and monitor the tracking and recovery frequency. The ground station likes to check the frequency prior to launch to find out if any stations are out there ready to igate the traffic onto the net for the FAA to monitor.

The prediction program used to determine the track of the balloon prior to flight can now output a prediction for the Rise, Closest Approach, and Set of the balloon for each of your stations. I have posted a prediction page for stations that I have been able to discover geographic coordinates. See the I-Gate prediction page for an example. The page will not be updated daily, however, it will be updated the evening prior to flight for I-gate planning purposes.

I have often been asked by iGaters when they should expect to either start receiving signals (AOS) or expect to see those signals disappear (LOS). This prediction page should answer all those questions for you.

Experimental Systems

Prelim exposition from previous flight (EOSS-102)

NOAA AirCore� Atmospheric Sampler

Recovery Crews - There is a valve at the end of this tube with a lever. If the lever is aligned or parallel with the tube, it is open. If it is perpendicular or crosswise to the tube it is closed. The first recovery crew person to approach the AirCore should immediately close the valve sealing the air sample inside.  Immediately report that you have sealed the experiment to station ALPHA, net control. This is valuable data for the experiment.

14 lbs of AirCore� planned to fly


Russ Chadwick sent this along:

Here's the impact absorber. It's made of 54 practice golf balls and will be on the bottom of the AirCore coil. The practice golf balls are tied together by 24 lateral loops of nylon string, 4 longitudinal loops and 8 diagonal loops. There will be an additional 24 practice golf balls to protect the sides of the coil. - Russ


If you are interested visit: - for a global overview of the Global Monitoring Division of NOAA. - for the overview of Carbon Cycle in the atmosphere and ... - for current trends.

NOAA, updates detailing any changes to the experiment are most welcome as are links to NOAA pages covering this elegant device.

See our previous flight announcement for additional details about this system.

note: customers are welcome to submit detailed synopses of their flights or web links to their own web sites.