EOSS 211/212 Space Grant Demosats and NOAA AirCore

Click here: EOSS-211/212 Mileage Reimbursement.  All request must be in before 8/10/2015  

Original Announcement: 

Due to the 48 hour prediction, the Launch location has been changed to WIGGINS.  Directions:  Heading Northeast on I-76, toward Wiggins, exit 66A and follow the signs to the rest stop.  Launch location will be north of the truck area and pavilion. See Wiggins Launch Site for more details.

The plan is to launch EOSS212 (NOAA) at 6:15am and EOSS211 (CSG) at 6:40am from the Wiggins Rest Stop.  We will be launching from the same location as we did for EOSS210 two weeks ago.  We will be operating the ground station in the same pavillion and using power from the EOSS supplied generator.

The plan is for the students to arrive about 5:50 and then start setting up their payloads.  They will be able to view the EOSS212 launch so that they will have some idea of what to expect when EOSS211 with their payloads is launched about 6:40am.

The flight prediction is available **here**. Scroll down to the appropriate flight and launch site and click on the "GIF" link to see the map. This prediction will be updated daily starting 10 days before the flight. The uncertanty significantly decreases in the last four days.

 The two 3,000 gram balloon flights on Aug 01/02 are non-exempt flights for different EOSS customers.  The first, EOSS211, is a flight for Colorado Space Grant and will be carrying six student-built payloads.  The second, EOSS212, is a flight for NOAA and will be carrying two AirCores on the same flight string.  Present plans are for the flights to be from the FAA-approved Deer Trail launch site, but this depends on atmospheric conditions.
The Critical Design Reviews for the EOSS211 payloads were completed in early July.  Five of the payloads are from post-secondary institutions (CSU x 2, Fort Lewis College, Red Rocks Community College, and UNC).  In addition, 1 high school payload team is being mentored by the UNC team.

One of the payloads will be transmitting throughout the flight on 902 - 928 MHz. Another payload will launch a small probe during descent at about 500m in altitude.  Other payloads include one carrying extremophiles from Bad Water, CA; one exploring cosmic radiation interaction with quantum dots; and a field mill experiment.
The EOSS212 flight is a NOAA test flight comparing two AirCores (with different tubing and valves) carried on the same flight string.  It is important to do this comparison  test prior to a September field experiment in New Zealand, as the test results will be used to determine the final configuration for the field experiment.


Event Date: 
Saturday, August 1, 2015 - 00:00
Flight Coordinator: 
Launch Site: 
West Intersection 14 & 71, 70,60 Grid Test N 40.4607, W 104.6305  X 20 Y 50


Six Colorado Space Grant Demosats from CSU (2), Fort Lewis College, Red Rocks CC, University of Northern Colorado, and a High School group mentored by UNC.

Balloon Type: 
Totex 3000g
10 ft parachute with fast release
145.600KE0BMV-11APRS/Cutter/DFTop Beacon
144.340KC0UUO-11APRSBottom Beacon


NOAA Dual AirCore Payload with a 402 MHz IMet transmitter

Balloon Type: 
Totex 3000g latex balloon
10 ft parachute with fast release
147.420K0SCC-11APRS/Cutter/DFTop Beacon
144.34AE0SS-12APRSBottom Beacon
147.555KE0BMU-11APRSUnder Test Bottom Beacon

Preflight Net:

  • 147.225 MHz CRA Repeater (107.2 Hz Tone) 8 pm MDT preceding night
  • 146.940 MHz (103.5 HZ Tone) RMRL Repeater if the CRA machine is down
  • 146.640 MHz (100 Hz Tone) DRL will serve as a backup frequency

Recovery Operations:

  • 449.450 MHz RMRL (103.5 Hz Tone)
  • 448.225 MHz (141.3 Hz Tone) Testing… PL verified 7/2/14
  • 446.100 MHz Field Simplex for EOSS 211
  • 446.150 MHz Field Simplex for EOSS 212
  • 446.275 MHz Drive Out Coordination
  • 146.550 MHz Backup field simplex

Launch Site Simplex: 446.050 MHz

HF - Possible ops: 7.235 LSB from John in Texas, KC0L

Tactical Calls: 
TacticalCall SignNameNotes
AlphaWA0GEH, KC0DMarty, MarkTracker Coordinators
BravoW9CN, KB0YRZMike, ChrisTrackers
DeltaK0SCC, KE0BMVStephen, ParkerTracker, Launch
EchoKD0SEMDave, RyanTrackers
FoxtrotN4TCWLee, EmilyTrackers
GolfW0NFWGeorgeTracker, Sunday Only
HotelKC0UUO, N0IXRob, DougTrackers, Launch
IndiaWD0DKT, KC0ZIE, KD0WDXGlenn, Darren, TonyTrackers, BWB
WhiskeyKE0BHNJesseTracker, CU Liason
TR Breakfast: 
Hi Trackers, Thank you for volunteering! The launch site is now Wiggins. So the breakfast site is Stub's, just west of the rest area. Or you can mooch off the CU folks. Grid locations are now posted elsewhere on this page. The tracking team just got larger by three teams. Certainly it is a a quality group. We will be on the fringes of the 449.450 RMRL machine, but it should work out fine. The last flight went smoothly regarding landowner contacts (thanks Dave) and we will concentrate on the same perfection for these flights. Also the communications on the repeater and simplex frequencies were brief and crisp indicating how professional this "amateur" group can be. Thank you. The preceding days before this flight will see some afternoon rain storms. Also the irrigation systems are fully in use. Have some boots to use in the muddy fields. EOSS #212 will carry two NOAA Aircore samplers and the intake valves will need to be shut off as soon as it is convenient. That is all for now, see you on the net Friday night at 8:00, 147.225.