EOSS-219-220-221 Colorado Space Grant 3fer Recap

Go here to submit your request mileage reimbursement.  Only EOSS members may submit.   


Due to difficulties with the primary repeater, the pre-flight net was held on the 146.94  repeater.  See details on tone at the bottom of the page.

Update 4/8/16 1620 :  Payload plans updated with final manifest and weight.

Update 4/6/16:  Grid Locations, Breakfast Info, Tracker List

The prediction page for this flight has been updated to reflect the trajectory based on forecasted conditions.  See http://www-frd.fsl.noaa.gov/mab/sdb/predict_0.htm  Click on GIF link across from the Eaton launch site for a graphic of the flight path.  Predictions will be updated every 24 hours up to flight, based on updated weather forecasts.

This will be a launch of 3 balloons in support of Colorado Space Grant Consortium Payloads. 

Please see below for the site layout, and report to the check-in (at the star indicated) with your payload



Event Date: 
Saturday, April 9, 2016 - 00:00
Flight Coordinator: 
Tom Londrigan KE7KCK
Launch Site: 
W 14 & 71: 60.40 Launch Site: 5.18, 34.58 Test: N40.5000 W104.72125 Ans. 5.3,32.7

EOSS-219 (Red)

EOSS-219 will be a flight containing 10 Gateway to space payloads from the University of Colorado.  For flight coordination purposes, this payload string will be designated "RED".

Balloon Type: 
Totex 3000g
144.34AE0SS-13APRSSlotted at 00:00 and 00:30

EOSS-220 (White)

EOSS-220 will carry seven payloads from the Colorado School of Mines, Aims Community College, and the Community College of Aurora. For flight coordination purposes, this payload string will be designated "WHITE".

Balloon Type: 
Totex 3000g
10 ft
144.34KC0UUO-11APRS Slotted at 00:10 and 00:40

EOSS-221 (Blue)

EOSS-221 will be carrying 8 payloads from the Community College of Denver, University of Northern Colorado, Colorado State University - Pueblo, Pikes Peak Community College, and Otero Junior College.  For flight coordination purposes, this payload string will be designate "BLUE".

Balloon Type: 
Totex 3000g
144.34AE0SS-12APRS beaconSlotted at 00:20 and 00:50
144.95KCOD-11APRS beacon under test

Preflight Net:

  • 147.225 MHz CRA Repeater (107.2 Hz Tone) 8 pm MDT preceding night (4/8/16, Repeater is down, go to 146.940)
  • 146.940 MHz (103.5 HZ Tone) RMRL Repeater if the CRA machine is down (4/8/16, Use this Machine)
  • 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 Balloon 1 EOSS-219
  • 446.150 MHz Field Simplex Balloon 2 EOSS-220
  • 446.200 MHz Field Simplex Balloon 3 EOSS-221
  • 146.550 MHz Backup field simplex
  • 446.275 MHz Car to Car drive out frequency


Launch Site Simplex: 446.05o MHz

HF - Possible ops: 7.235 LSB

Tactical Calls: 
TacticalCall SignNameNotes
AlphaWAØGEH. KCØDMarty, MarkAlpha Trackers
BravoKBØYRZChris, CraigTrackers
CharlieKDØSEM, KEØCQQDave, RyanLaunch Team, Trackers
DeltaKØSCC, KEØBMVStephen, ParkerLaunch Team, Trackers
FoxtrotKCØRPS, W0NFWJim, GeorgeLaunch Team, Trackerf
GolfKE7KCKTomFlight Coordinator, Tracker
HotelKCØLJohnTracker from Texas
IndiaNØIX, KCØUUODoug, RobLaunch Team, EOSS President, Tracker
WhiskeyKDØNRYChrisCSGC Leader, Tracker
TR Breakfast: 
Breakfast is planned for the launch site as there will be plenty of food. This will be a relatively short flight, so we encourage all trackers to go to the launch site to provide any assistance required by the launch team. On the onset, all available, unassigned teams will leave after the 219 launch. Others will disburse as they become available. Coordinate with Alpha for your assignments. We will probably stage students along E.W. road 74 between N.S. Roads 87 and 93 unless the prediction varies. Bring your boots as this land may be muddy. Again, thank you for joining us for this adventure. We will get them back.