EOSS-302 NDIA STEM Flight - Recap

Flight-Specific Communications Plan

Note that the pre-flight net has been perminently changed to 7pm (that's 1900 MDT (0100Z)).

EOSS Preflight Net @ 7 PM MDT preceding night:
        • 449.225 MHz (-5 MHz Offset, 141.3 Hz Tone )  RMHAM, connected to the Fun Machine linked system 
        • 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)

Note: A statewide ARES exercise will occur on the same day as this flight (Saturday) and will be using the RMHAM DMR system. EOSS will be secondary to this exercise and should minimize use to flight-critical communications.

DMR Communications:

• This flight will use RMHAM's Rocky Mountain Wide talk group on whatever repeater you can hit. Please see the note above.

Track & Recovery Operations:
        Repeaters:
             • 448.450 MHz (-5 MHz Offset, 100.0 Hz Tone) PPFMA repeater.

        Simplex Frequencies:
        • 446.100 MHz Balloon T&R Simplex 
        • 446.150 MHz Optional T&R Simplex        • 446.150 MHz Spare T&R Simplex

        • 446.275 MHz Car to Car drive out Simplex (potential interference with low-power YSF Fusion Node in Colorado Springs)
        (Note that some radios assume these are repeater frequencies and attempt to put a 5 MHz offset in the transmit frequency automatically)

        Legacy 2M Simplex Frequency (not generally used due to desense/interference issues with the 2M APRS packets)
        • 146.550 MHz Simplex

2M Direction Finding Frequencies:

• 144.340 primary beacon
• 145.645 secondary beacon
• 144.905 beacon under test