Summit Middle School and NSSTI

Update 10/20/17 1200:  Rev C to Payload plans are posted. Launch site has shifted to Deer Trail. Please see the link below for directions.  The prediction from Windsor placed the landing in an area with poor roads and poor repeater coverage. Preflight net will be held on the 449.225 MHz RMHAM Repeater (141.3 Hz Tone), 8 pm MDT preceding night of flight.This will be a flight of two 1500g balloons flying payloads from NSSTI and Boulder's Summit Middle School.  Launch times will be at 0800 and 0820.  Preliminary predictions are now being posted with 24 hour updates at this link:

Flight Coordinator: 
Tom Londrigan KE7KCK
Event Date: 
Saturday, October 21, 2017 (All day)
Alt Launch Date: 
Sunday, October 22, 2017
Launch Site: 


This will be a 1500g balloon with 3 payloads from NSSTI

Balloon Type: 
Totex 1500g
10 ft Rocketman
145.75 MHzKC0D-15APRS/DF/CutterWireless release
144.34 MHzAE0SS-12APRS/DigiPath EOSS


This will be the flight of a 1500g exempt balloon with 7 Summit Middle School payloads.

Balloon Type: 
Totex 1500g
8.5 ft with fast release
144.34 MHzAE0SS-13APRS
Last Chance 30,10 Test: N40.0000 W103.000 = 61.3, 27.9

Preflight Net:

  • 449.225 MHz RMHAM Repeater (141.3 Hz Tone) 8 pm MDT preceding night of flight. Note this Change!!!
  • 146.940 MHz (103.5 HZ Tone) RMRL Repeater if the RMHAM 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)
  • 145.400 MHz CC (123.0 or 88.5) Akron Repeater
  • 446.100 MHz Field Simplex, both balloons
  • 146.550 MHz Backup field simplex
  • 446.275 Drive out simplex

Launch Site Simplex: 446.050 MHz

HF - Possible ops: 7.235 LSB

TR Breakfast: 
There are very few trackers. Mark and I will grab a bite at McDonald's in Brush with about 50 miles to go. 6:00 We will leave by 6:30. Staging for the students will be in Yuma with Mark and I specifying the location. We will be out of repeater range and will rely on 446.100 for both balloons. I will continue research for alternative repeaters. Possibly Akron, 145.400 PL 123.0 or 88.5?) Not sure if it is up. There is some discussion regarding a move to Sunday. Stay tuned.
Tactical Calls: 
TacticalCall SignNameNotes
AlphaWAØGEH, KCØDMark, MartyTracking Coordinators
CharlieKCØRPS, WØNFWJim, GeorgeTrackers
DeltaKØSCCStephenLaunch Team, Tracker
EchoKDØSEMDaveLaunch Team, Tracker