[aprssig] US APRS symbol usage
Lynn W. Deffenbaugh (Mr)
ldeffenb at homeside.to
Thu Jan 22 14:42:30 CST 2009
Stephen H. Smith wrote:
> I'm really surprised that packets from home stations outnumber ones from
> mobiles, particularly since home stations (presumably ??) beacon at a
> far lower rate than mobiles, especially mobiles with Smart
> Beaconing. And surely the ratio of cars to ambulances can't be
> almost 2:1....,.
I was surprised at that also, but then again, homes are easier/cheaper
to set up. Remember, this is from APRS-IS, not RF. Therefore it counts
all of those Internet-Only UI-View, xastir, and other APRS-IS clients
that "beacon" to the Internet. Beaconing rate doesn't affect the Uses
count, only the packet count. And remember, always-on Home stations
would quickly swamp the only-while-moving mobiles in packet count.
> Any thoughts on these seeming anomalies ?
As for the cars to ambulances, all I can guess is that EOC and other
emergency services may set up objects for ambulances while a lot of the
rest of us might use trucks, vans, and Jeeps causing a dilution in the
> [Just discovered that apparently you pasted some sort of table directly
> into email, instead of converting it to plain text first. It is
> rendering with "Uses" and "Packets" run together, yielding single
> numbers in the millions for each row.]
That's why I attached the spreadsheet. I'm on so many APRS-related
groups, I forgot that this one was plain text only. I trust that anyone
that really cares about the numbers either already has or can acquire a
way to view the spreadsheet.
Lynn (D) - KJ4ERJ
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