Recap of EOSS-82/83

LAUNCH DATE: August 7, 2004

• EOSS-82 LAUNCH TIME: 07:30 am MDT (13:30 UTC)
• EOSS-83 LAUNCH TIME: 08:21 am MDT (14:21 UTC)

LAUNCH SITE: Deer Trail, CO (directions here)

• EOSS-82 TOUCHDOWN TIME: 09:25 am MDT (15:25 UTC)
• EOSS-83 TOUCHDOWN TIME: 10:33 am MDT (16:33 UTC)

Pre-flight Prediction

Launch Site - Deer Trail
-----------------------
Launch Point: 39.6114� lat.   -104.0426� long.
Ascent Rate: 1000 feet per minute
Descent Rate: 910 feet per minute
Altitude: 5205 feet

EOSS-82

Maps made with MapPoint
Prediction made with Balloon Track

Predicted Landing Site
-----------------------
Landing Point: 39.7307� lat.  -103.5258� long.
Altitude: 4900 feet
Flight Time: 130 Minutes
Bearing: 73.1� True
Range: 28.7 Mi.

Actual Landing Site
-----------------------
Landing Point: 39.6644� lat.  -103.827� long.
Bearing: 72.2� True
Range: 12.0 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 254.1� True
Range: 16.6 Mi.

EOSS-83

Maps made with MapPoint
Prediction made with Balloon Track

Predicted Landing Site
-----------------------
Landing Point: 39.7307� lat.  -103.5258� long.
Altitude: 4900 feet
Flight Time: 130 Minutes
Bearing: 73.1� True
Range: 28.7 Mi.
Actual Landing Site
-----------------------
Landing Point: 39.6808� lat.  -103.7711� long.
Bearing: 71.6� True
Range: 15.2 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 255.3� True
Range: 13.5 Mi.

EOSS Frequencies:

Global Frequencies

• Preflight Net:
  • 147.225 MHz 8 pm MDT preceding Saturday 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 (100 Hz Tone)
  • 449.450 MHz RMRL (103.5 Hz Tone)
  • 146.550 MHz simplex (same simplex for field and launch ops)
  • Repeater Coverage Pages - Listings of all repeaters available in the expected flight areas.
  • There may be FRS operations see THIS PAGE for a list of channel numbers and their associated UHF Frequencies.
  • 7.228 MHz HF

EOSS-82

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

EOSS-83

• Beacon
  • 145.600 MHz
    • ID: K�ANI in CW
• APRS
  • 445.975 MHz
    • ID: K�YUK-11
  • 145.600 MHz
    • ID: K�ANI-11
  • 441.000 MHz
    • ID: K�ANI-12
    • DIGI: EOSS

Flight Systems:

EOSS-82

EOSS-83

Payload Configuration:

• Payload_Plan_82-83.PDF (updated 5-Aug-04)

EOSS Grid:

Tactical Callsigns:

Internet Gateway Stations:

as seen on Findu.Com

For W5VSI-11

• K�YG-7 - Mark Patton
• KC�LNO-1 - Mike Skinner

For AC�AK-11

• KC�LNO-1 - Mike Skinner
• WB�BLV - Leroy Sublett

For K0ANI-11

• K0YG-7 - Mark Patton

For K�ANI-12

• KC�LNO-1 - Mike Skinner

For K0YUK-11

• K0YG-7 - Mark Patton
• KC�LNO-1 - Mike Skinner

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. 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.

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

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

Recaps:

Tracking and Recovery

Finding a Lost Payload by Larry Cerney and Rick von Glahn

Photos:

Launch Site

• Photos by Merle McCaslin, K�YUK
• Photos by Don Frasier, WA9WWS

Recovery Sites

• Photos by Ann Foster, K�ANN
• Photos by Marty Griffin, WA0GEH
  • Page 1 - The Students
  • Page 2 - The Tracking Team
• Photos by Richard Beggs, K0AEM
• Photos by Merle McCaslin, K�YUK
• Photos by Scott Trumpeter, N�LNE (air one)

Audio:

Audio files may be deleted at anytime 30 days after the flight to conserve web server disk space.

Pre-Flight

• Weekly EOSS net 4 days prior to flight
• Pre-flight Tracking and Recovery net on Friday evening

Flight Audio

• 1_eoss8283_deploy.mp3
• 2_eoss082_launch.mp3
• 3_eoss083_launch.mp3
• 4_eoss082_burst.mp3
• 5_eoss082_los.mp3
• 6_eoss083_burst.mp3
• 7_eoss083_los_recovery.mp3

Data:

These files may be updated in the coming days if I receive additional logs from other individuals who monitored the flight.

Plain Text Log

• eoss_82_full_packet_2004_08_07.log
• eoss83_combined_yuk_ani.txt (findu logs of two APRSs combined)

Comma Delimited Spreadsheet

• eoss_82_Flight_Data.csv APRS
• eoss_82_Telem_Data.csv Onboard Telemetry
• eoss_83_Flight_Data.csv (findu logs of two APRSs combined)

Findu.com logs

• eoss_82_w5vsi-11_findu.txt
• eoss_83_ac0ak-11_findu.txt
• eoss_83_k0ani-11_findu.txt
• eoss_83_k0ani-12_findu.txt
• eoss_83_k0yuk-11_findu.txt

UI-View Captures

Doug Crandall, KB9ZWL, sent along these files (in zip archive). If you use UI-View, you can replay the flight.

• eoss8283_uiview_logs_kb9qwl.zip

Charts:

Mark Patton was curious about the altitude/descent rate issues between two APRS systems on a single balloon. Here is his chart and below that a link to the Excel spread sheet that generated it.

eoss082_083_k0yg_comparisons.xls