[aprssig] APRS Speed Spec? (plan B)
bruninga at usna.edu
Wed Oct 11 09:15:32 CDT 2017
My head hurts trying to read the Mic-E spec as written.
Also, I screwed up MPH and KTS in last email…
So here is what I am suggesting for the CSE/SPD field:
999 = 15,200 knots space station
998 = 1600 knots military mach 2.8
997 = 1200 knots Concorde
996 = 996 knots normal speeds down to 0
So using this same idea for Mic-E would result in
789 = 15,200 knots space station
788 = 1600 knots military mach 2.8
787 = 1200 knots Concorde
786 = 996 knots for consistency with above
785 = 785 knots normal speeds down to 0
Any objections? About the only one we will ever use is the orbital
velocity for the space station and for satellites, but I thought we may as
well include a few more.
*From:* Robert Bruninga [mailto:bruninga at usna.edu]
*Sent:* Wednesday, October 11, 2017 8:48 AM
*To:* TAPR APRS Mailing List
*Cc:* Robert Bruninga
*Subject:* APRS Speed Spec?
I thought that I had years ago declared that a speed of 999 would mean
Orbital Velocity 17,500 MPH and that 998 would mean something else for high
speed jets. Maybe mach 3?
Actually I may have defined three speeds greater than 999 for the last
Clearly we need orbital velocity for the Space station, etc…
And Mach 3 for our fighter pilots…
And something for the Concord (or its replacement)…
What about Elon Musk’s hypter tube? But I think it is under 999…
Anyway, is this written down anywhere?
And if not, then here is what I propose:
999 = 17500 MPH space station
998 = 1850 MPH military
997 = 1350 MPH concord
996 = 996 MPH
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