Flight Recap for EOSS-176

Recap Maps | Frequencies | Flight Systems | Payload Config | I-Gates | T & R | Text Recaps | Photos | Audio | Video | Data | Charts

03/27/2013 13:50 (CDT): minor edits

Flight Coordinator: Nick Hanks, N0LP

LAUNCH DATE: June 9th, 2012 (wx delay +1 day)
LAUNCH TIME: 08:49:20 am CDT (13:49:20 UTC)
LAUNCH SITE: Glenwood High School, Glenwood, IA

Pre-flight Prediction and Actual Tracks

E0SS-176 AE0SS-11

Blue = Actual Track
Green = Predicted Ascent Phase
Red = Predicted Descent Phase

Map made with MapPoint
Prediction made with Balloon Track


Green Track = Ascent
Red Track = Descent (NO DESCENT TRACK)
Prediction and Actual tracks made with Balloon Track

Maps by Google Earth

Above Map Files available in the Data Section below

Launch Site - Glenwood High Sch
Launch Point: 41.05151� lat.   -95.73659� long.
Grid: X=37.93 Y=18.77
Ascent Rate: 1100 feet per minute
Descent Rate: 950 feet per minute
Altitude: 998 feet
Predicted Landing Site
Landing Point: 41.26672� lat.  -95.34787� long.
Grid: X=58.0 Y=33.6
Altitude: 4500 feet
Flight Time: 162 Minutes
Bearing: 53.5� True
Range: 25.1 Mi.
Actual Landing Site
Landing Point: 41.22767� lat.  -95.53102� long.
Grid: X=48.5 Y=30.9
Bearing: 41.2� True
Range: 16.194 Mi.
Difference from Predicted to Actual Landing Site
Bearing: 244.6� True
Range: 13.56 Mi.

Final Pre-Flight Prediction is available here
Prediction History is NOT available for this flight

EOSS Flight Day Frequencies:

Tracking and Recovery Frequencies

EOSS-176 Balloon Payload Frequencies

  • Beacons
    • 147.420 MHz
      • CW ID: K0SCC
  • APRS
    • 144.340 MHz
      • ID: AE�SS-11
      • DIGI: EOSS
      • 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
      • Telemetry once a minute
      • Sample Data
  • 147.420 MHz
    • ID: K0SCC-11

EOSS-176 Balloon Non-Emitting Payloads

  • Batmobile
    • Dual GoPro DVRs (up and down)
    • GoPro looking towards horizon

Flight Systems: 


Balloon Manufacturer Totex
Balloon Type latex
Balloon Size 3000 g
Neck Load 7.6 Lbs.
Neck Lift 18.61
Ascent Rate 1329 fpm estimated
Descent Rate 950 fpm estimated
Parachute 5 ft.
Peak Altitude determined after flight
Launch Conditions determined at launch


Payload Configuration:

Payload Experiment Designer

EOSS, we're flying for fun at the Great Plains Super Lauanch (GPSL)

Experimenters are welcome to submit websites for linking or overviews which I will post on a page on the EOSS website.

Internet Gateway Stations:

as seen on Findu.Com (listed alphabetically)

EOSS-176, AE0SS-11

  • K0SCC - Steve Meer, tracker
  • KE6DZD - Wayne Jorns, Belleview, NE
  • N9XTN - Mark Conner, Waterloo, NE
  • WK0Q - Allen Gats, Gilman City, MO

EOSS wishes to express our sincere appreciation to the stations above who iGated the balloon APRS telemetry onto the internet. Did you know I publish predictions for i-gates? I keep a list of everyone who has ever i-gated an EOSS balloon flight. You're all in the list so if you're wondering when the balloon will pop up over your horizon, check out this page for future flights.  Currently predictions are being made for 30 i-gates.

We are relying heavily on real time position information available on the net to allow the FAA controllers to have up to the minute location data to assist them in air traffic control.

Redundant stations for the balloon iGating provide excellent coverage. If you are able to iGate we invite you to join the Internet Gateway Team. Contact me (webmaster@eoss.org) to be put in touch with the coordinator. By joining the team, you are giving peace of mind to the iGate coordinator for that flight. He knows you'll be there and he can rely on you.

Naturally, anyone can iGate data onto the net and even if you aren't a member of the team we will welcome your contribution to the internet based tracking effort. If you callsign appears on the findu.com log, you'll be shown as a contributing station as those above are.

Having more than one station covering each APRS beacon means that should a station drop out momentarily, the others can often maintain the data flow.

Thanks again guys! The FAA (and EOSS) are very grateful for your assistance in this endeavor.

Future I-Gaters:

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

Current I-Gate Stations:

Guys, the prediction program used to determine the track of the balloon prior to flight can now output a prediction for the Rise, Closest Approach or maximum elevation, 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.

Tracking and Recovery  

NEWS FROM Webmaster

The tactical callsigns will be used throughout the trip to GPSL both on the road trips out and back as well as the T&R operations on flight day.

We will be running a launch and recovery operation with all EOSS attendees at GPSL. Bring your DF gear just in case. If you can mobile iGate bring that equipment as well.

Grid and Roster updated on the day before flight


Location Grid X Grid Y
Holiday Inn Express (41.21417 N, 96.08000 W)    


Tactical Call Signs


Call sign



Alpha WA0GEH (AE0SS on flight day) Marty, Sharon and John Tracking and Recovery
Bravo N0NDM Larry and Chris  
Charlie W9CN Mike and Miles  
Delta KC0RPS Jim and Glenn  
Echo N0KKZ Rick  
Fotrot N0MPM Mike  
Golf K0SCC (AE0SS on Thursday and Sunday) Steve, Parker, and Nick  
Hotel WA9WWS Don and Dan  


Text Recaps



GPSL Events


Launch Site


Recovery Site




NOT recorded




by Nick Hanks, N0LP






EOSS-176, AE0SS-11


 Spread Sheets

Mapping Files