Recap of EOSS-107/108

photo/caption by Colin Glennan - WG0E

EOSS 107 strains to take off as handlers try to keep the wind from pushing the balloon to the ground.

LAUNCH DATE: 15-July-2006
LAUNCH SITE: Deer Trail, CO (Driving Directions)

Temporary Notes:

Team members who qualify for mileage reimbursement get your information in to Merle within 7 days:

Mileage Reimbursement Page

Individual Balloon Recaps

Flight Tracks and Predictions only, all other data linked on this page

Recap of EOSS-107

Recap of EOSS-108

Flight Track Comparison of both balloons

Tracking and Recovery Team
Flight Day Breakfast

EOSS Frequencies:

Global Frequencies

  • Preflight Net:
    • 147.225 MHz 107.2 Hz tone
    • 8:00 PM Night before flight
  • Tracking and Recovery Operations
    • 448.450 MHz PPFMA Repeater (100 Hz Tone)
      • If flightpath goes east or south
    • 449.450 MHz RMRL Repeater (103.5 Hz Tone)
      • If flight path goes northeast
    • 146.550 MHz simplex (for both field ops and the launch site)
    • Repeater Coverage Pages - Listings of all repeaters available in the expected flight areas.
    • 7.228 MHz + QRM HF (sporadic usage)

Balloon Frequencies


  • Beacon and APRS
    • 145.600 MHz
      • ID: K0ANI-11
      • Tracking Tone then CW ID then APRS
  • APRS
  • 144.340 MHz (Payload Train)
  • ID: AE�SS-11
  • Node: BALNOD
  • APRS Time Slotted Every 30 seconds at 0:00 and 0:30
  • Telemetry once a minute
  • Sample Data


  • Beacon
  • 147.555 MHz
  • APRS
  • 144.340 MHz
  • ID: KC0YA-11
  • Node: BALND2
  • APRS Time Slotted Every 30 seconds at 0:15 and 0:45
  • Telemetry once a minute
  • Sample Data


Payload Configuration:

Internet Gateway Stations:

as seen on Findu.Com


For AE0SS-11

  • K0ANI - Larry Cerney - Denver, CO
  • K0AEM-1 - Richard Beggs, Thornton, CO
  • K0UT-2 - Bill Beach
  • K0YG-7 - Mark Patton - Foxfield, CO
  • KC0LNO-1 - Michael M Skinner, Monument, CO
  • N0PSJ - Christopher Holmes, Arvada, CO

For K0ANI-11

  • K0YG-7 - Mark Patton - Foxfield, CO
  • KI4GYZ - Art Hostmark, Thornton, CO



For KC0YA-11

  • K0UT-2 - Bill Beach
  • K0YG-7 - Mark Patton - Foxfield, CO
  • KC0LNO-1 - Michael M Skinner, Monument, CO
  • N0PSJ - Christopher Holmes, Arvada, CO


EOSS wishes to express our sincere appreciation to the stations above who iGated the balloon APRS telemetry onto the internet.

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 ( 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 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, 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 Info:


Location X Y
Deer Trail 33 58
Punkin Center 51.5 5.5
Calhan 20 18.9
Kiowa 11 40
Touchdown (see Prediction Page)

Tactical Callsigns

Tactical Callsign Name Notes
Alpha N0NDM, KB0YRZ Larry and Chris Tracking and Recovery Coordinator
Bravo N0MPM Mike with Lisa and Anthony  
Charlie KI4GYZ Art  
Delta KC0UUO Rob  
Echo W0CBH, WG0E Benjie and Colin  
Foxtrot NQ0R, W6AUN, AB0WV Randy, Perry, Frank  
Golf WA0GEH, N0AUS Marty and Al  
Hotel K0SCC Steve with Mike  
India KB0UBZ Ben and Tyler  
Juliet KP4RF, NP3BY Oscar, Gladys  
Ground AE0SS Nick  



Our Customer

Upward Bound & Space Grant Workshop

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

Recaps by Participants:

Anyone who participates in a flight is welcome to submit their own recap of the events of the day. It can be as simple as a short paragraph others will find interesting to several web pages of pictures, graphs, video, audio whatever.

Topo Mapped Landing Site - Larry Cerney, K0ANI, has prepared a brief recap of the landing zone including a few topo maps to illustrate the ground situation.

The T&R Perspective - Benjie Campbell, W0CBH provides us with his take on the day's events.


Launch Site

Recovery Site


I have it but it will take a few hours to edit it into web usable chunks. Later this week probably.


Nothing received




Comma Delimited




Comma Delimited



by Rick von Glahn, N0KKZ

Flight Track Comparison of both balloons

EOSS-107 Charts

EOSS-108 Charts


by Steve Osborne, KC0YA

EOSS-108 charts (many variables charted)


by Ben Baker, KB0UBZ

Google Earth Tracks