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11/01/2025 - 00:00 to 23:45
EOSS-331 COSGC Fall Launch - Recap
A single balloon was launched on Saturday, November 5, 2022 at approximately 7:28am MDT.
- 13:27:18 UTC Launch 39.60809, -104.041395 altitude: 5260 Ft
- 14:58:52 UTC Burst 39.369219,-103.142579 altitude: 111,250 Ft
- 15:33:04 UTC Landed 39.18454,-102.71143 altitude: 4583 Ft
Recap Gallery:
Original Announcement:
- 11-02-2022Several repeaters have been added to the SkyHub Link system for this EOSS flight (see Comms plan below). These repeaters will be linked together, but separated from the SkyHub Linked system for the flight.
- 11-03-2022Payload Plans Rev B have been posted
- 11-04-2022Payload Plans Rev C have been posted
This will be one 3000g balloon or two 1500g balloons carrying payloads built by Colorado Space Grant Consortium schools.
If sky cover is greater than 5/10ths, the flight string will be reconfigured as two exempt (Lite) balloons as show below:
Event Date:
Saturday, November 5, 2022 - 00:00 to 23:45
Flight Coordinator:
KCØRPS & KE7KCK
Launch Site:
Grid:
Grid location is Punkin Center X 30 Y 30 Grid Test: N 39.000 • W 103.000 X 67.5 Y 40.3 331 Heavy Predict 23 mi SE - Seibert (NS CR-22 & EW CR-DD) (X 90 Y 41) 331 Lite Predict: 27 m SE - Seibert (NS CR-34 & EW CR-
Flights:
EOSS-331 Heavy
This is a 3000g balloon carrying COSGC student-built payloads
Balloon Type:
Totex 3000g Latex
Parachute:
12 foot Rocketman
Beacons:
| Frequency | Callsign | Type | Notes |
|---|---|---|---|
| 144.645 MHz | KC0D-1 | Remote Release/DF | Secondary Beacon |
| 145.765 MHz | KC0D-3/Charlie | Remote Release | flight qualification |
| 144.340 MHz | AE0SS-12 | APRS/Digi EOSSA | Primary Beacon, Timeslotted 0:27 & 0:57 |
Payload Plan:
FrequencyList:
EOSS Preflight Net @ 7 PM Mountain Time preceding night:
• 449.225 MHz (-5 MHz Offset, 141.3 Hz CTCSS) Rocky Mountain Ham Radio (RMHAM) Repeater and EchoLink *CANONCTY* conference and the Fun Machine linked system
• 146.940 MHz (-600 KHz Offset, 103.5 Hz CTCSS) Rocky Mountain Radio League (RMRL) Repeater if the RMHAM machine is down
• 146.640 MHz (-600 KHz Offset, 100.0 Hz CTCSS) Denver Radio League (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:
Repeaters:
• 449.450 MHz (-5 MHz Offset, 103.5 Hz Tone) RMRL repeater
Simplex Frequencies:
• 446.100 MHz Balloon #1 Field Simplex
• 446.150 MHz Balloon #2 Field Simplex
• 446.200 MHz Balloon #3 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)
DMR:
- We will be using RM Wide Talk Group 700
- The Cedar Point DMR repeater (Limon Colorado RMHAM-N0SZ Input 440.275 MHz Output 445.275 MHz Color Code 7, TS-1 TG 700 (Wide), TS-2 TG 720 (Central)) is going to provide good coverage
- Also, Burlington Colorado RMHAM-N0SZ Input 440.0500 MHz Output 445.0500 MHz Color Code 6, TS-1 TG 700 (Wide), TS-2 TG 720 (Central)
SkyHub Link:
SkyHub Link system has linked a 2m repeater in Stratton, CO and a 70cm repeater in Akron to the 449.450 machine for our use during balloon flights.
- Stratton - 146.895(-) MHz, 103.5 Hz (be careful that 2m operations does not affect your reception of balloon packets)
- Akron - 447.425(-) MHz, 103.5 Hz
- Cedar Point (Limon) 447.650(-) MHz, 103.5 Hz
- Hugo 447.150(-) MHz, 103.5 Hz
- First View 447.600(-) MHz, 103.5 Hz (on Hwy 40, halfway between Kit Carson & Cheyenne Wells.
2M Direction Finding Frequencies (used on this flight):
- 144.340
- 144.905
- 145.645
- 145.765
Tactical Calls:
| Tactical | Call Sign | Name | Notes |
|---|---|---|---|
| Alpha | WA0GEH, KC0D | Marty, Mark | |
| Bravo | W9CN, N0JPS | Mike, John | |
| Charlei | KB0YRZ | Chris | |
| Delta | K0SCC | Stephen | |
| Echo | KE7KCK, N0NKK | Tom, Nancy | |
| Foxtrot | K0LOB, KD7ORO | Jim, Steve | |
| Ground Station | N2XGL, KB0TVJ, K5JK | Jeff, Russ, Tom | |
| Golf | KE0GKI | Bernadette | |
| Tango | KC0L | John | |
| Kilo | N0NDM | Larry | |
| Lima | |||
TR Breakfast:
T&R Breakfast will be at 6:30 AM at the IHOP at the Flying J Truck Stop in Limon
This from KC0L:
Grid location is Punkin Center X 30 Y 30
Grid Test: N 39.000 • W 103.000 X 67.5 Y 40.3
331 Heavy Predict 23 mi SE - Seibert (NS CR-22 & EW CR-DD) (X 90 Y 41)
331 Lite Predict: 27 m SE - Seibert (NS CR-34 & EW CR-DD) (X 90 Y 38)
332 Lite Predict: 32 m SE - Seibert (NS CO-34 & EW CR-Z) (X 93 Y 35)
Weather forecast for Deer Trail at 0700 MDT (1300 UTC) Saturday:
Mostly Clear skies, cloud cover 30%, visibility unlimited
Temperature 36, Dew point 21, Wind SW 8