EOSS-299 NOAA Aircore Glider Test - Recap

This flight was flown in honor of EOSS founding member Rick von Glahn, NØKKZ(SK). The flight beacons indicated, "In Memory NØKKZ(SK)EOSS Ultimate Prognosticator" throughout the flight.

A 3000g balloon was launched from Deer Trail on Saturday May 30 at 0632 MDT carrying an glider experiment for NOAA Boulder. As planned, the balloon was cut down at 93,396 feet and landed at 0818.

For EOSS members, the mileage link for every 2020 filight is located at https://www.eoss.org/node/3795.

Launch Video is at https://drive.google.com/open?id=1zL3YjnI_Ubk7-v17miiuH2U84vgS1WUU



Original Announcement: 

Friday, May 29, 12:15 pm. The launch is a go from the new school in Deer Trail, Colorado. Directions to the launch site are available here.

Payload Plan Rev D posted (temperature logger added to glider)

Cloud cover predictions are currently acceptable for launch of a non-exempt balloon. We will keep monitoring forecasts, but at this point, a Saturday launch is reasonable.

This is a 3000g balloon to carry a NOAA experiment to 95,000 ft for testing prior to flight later in the summer. The payload under development is a glider, but WILL NOT be released from the balloon on this flight. If cloud cover prevents launch, then Monday, or Wednesday appear to be possible alternative dates.

The planned launch site is now the new school at Deer Trail, Colordado. The flightpath predictions are updated daily (about 11:30am) and are located here. Click on the planned launch site GIF link for a map. A collection of additional prediction, tracking, and flight detail links are located at http://wxqa.com/eoss299.html.

Event Date: 
Saturday, May 30, 2020 - 00:00
Flight Coordinator: 
Launch Site: 
Last Chance, X=20, Y=40 test: N39.5000, W 103.900 = 3.7, 23.5


Balloon Type: 
Totex 3000g Latex
10' spherachute with mechanical release and thermal cutter
144.905 MHzKCØD-12Thermal Release / DFSecondary Beacon
144.340 MHzAEØSS-12APRS / Digi EOSSAPrimary Beacon, Timeslotted 0:27 and 0:57

EOSS Preflight Net @ 8 PM MDT preceding night:
        • 449.225 MHz (-5 MHz Offset, 141.3 Hz Tone )  RMHAM Repeater  
        • 146.940 MHz (-600 KHz Offset, 103.5 Hz Tone) RMRL Repeater if the RMHAM machine is down
        • 146.640 MHz (-600 KHz Offset, 100.0 Hz Tone) DRL Repeater will serve as a backup to the backup repeater 

Launch Site:
        • 446.050 MHz Simplex  
        (Note that some radios assume these are repeater frequencies and attempt to put a 5 MHz offset in the transmit frequency automatically)

Track & Recovery Operations:
        • changed Wednesday, 5/27 448.450 MHz (-5 MHz Offset, 100 Hz Tone) PPFMA repeater.

        • RMHAM System - Wide (Rocky Mountain Wide) talkgroup.

Simplex Frequencies:
        • 446.100 MHz EOSS 299 Field Simplex 
        • 446.150 MHz Alternate Field Simplex
        • 446.200 MHz Alternate Field Simplex
        • 446.275 MHz Car to Car drive out Simplex
        (Note that some radios assume these are repeater frequencies and attempt to put a 5 MHz offset in the transmit frequency automatically)

2M Direction Finding Frequencies:

  • 144.340
  • 144.360
  • 144.905
  • 145.535
  • 145.645
  • 145.710
  • 145.765


Tactical Calls: 
TacticalCall SignNameNotes
AlphaWA0GEH-9, KC0D-9, N0LPMarty, Mark, Nick
BravoW9CN, N0JPSMike, John
CharlieKC0RPSJimFC. Lsunch, Tracker
DeltaK0SCC, KE0BMV,Stephen, ParkerLaunch, Trackers
EchoKE7KCKTomTracker, President
FoxtrotWB0DKTGlennWelcome Back, Tracker
GolfK0JWB, N0NKKJohn, NancyTrackers
Ground StationN2XGL, KB0TVJJeff, Randy, RussData gurus, FAA contacts
HotelKB0YRZChrisNew White Truck
IndiaKB0UBZ, KA0ZFIBen, AnnTrackers
KiloN6BAJeff DeatonTracker, SDR Brick Wizard
LimaWG0EColinWelcome Back
TangoKC0LJohn (Texas)Prediction Center - Dallas
TR Breakfast: 
There is no planned breakfast time and location for this flight due to the current virus issue and social distancing requirements. There will be no planned lunch session for the same reasons. Be sure to update your bricks for this flight.