[aprssig] APRS Speed Spec?

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Pardon my curiosity, but what's driving this mechanism? It seems like a kludge.

Jeff
N5TEV

-------- Original Message --------
Subject: [aprssig] APRS Speed Spec?
From: Robert Bruninga <bruninga at usna.edu>
To: TAPR APRS Mailing List <aprssig at tapr.org>

Authors,

I thought that I had years ago declared that a speed of 999 would mean Orbital Velocity 17,500 MPH and 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 three enetries.

 

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