[aprssig] Re. Another Clueless Balloonist...(RATE!)
Lynn W. Deffenbaugh (Mr)
ldeffenb at homeside.to
Mon Mar 17 12:57:08 EDT 2014
Analysis of the raw packets seems to indicate that KF6RFX-3 was
experimenting with Proportional Pathing
(http://www.aprs.org/newN/ProportionalPathing.txt) and was also using
Mic-E encoding. Packets were going out with no path, WIDE1-1, and
WIDE1-1,WIDE2-1 if I saw it correctly.
To see ALL raw packets as received by APRSISCE/32 IGates during the
flight, see:
http://ldeffenb.dnsalias.net/Tracking/Balloons/20140316-KF6RFX/Packets.txt
To see plots of the RF and (dupe-suppressed) APRS-IS packets for these
two stations, see:
http://ldeffenb.dnsalias.net/Tracking/Balloons/20140316-KF6RFX/*
(a picture-laden posting of this with more detail is awaiting moderator
approval)
Lynn (D) - KJ4ERJ - APRS Infrastructure Visualization
On 3/17/2014 9:53 AM, Robert Bruninga wrote:
>
>
> >> change from WIDE1-1,WIDE2-1 to either WIDE2-1 or NO
> >> path, which is the ultimate best path setting.
>
> >The problem is not the path, it's the 10s beacon rate...
>
> > ...not significantly worse for the local network than, say,
>
> > someone who leaves their tracker on while shopping
> > for an hour or two.
>
>
> True. And even though it is 2 hops, it still only gets digipeated
> once and only once by each digipeater whether it hears the first hop
> or not. At a 1 minute rate, it should be no different than just
> another local mobile.
>
> The fact that it hits every local area over 10 states does not make it
> any worse for any given local area. It is still just like one more
> mobile for a few hours.
>
> But the RATE is ABOMINABLE!! SImply no reason for packets more than
> once a minute for something like a balloon which does not make sharp
> turns! And besides, keeping the rate at 1 minute saves battery power,
> hence, weight, hence helium, etc.
>
> Bob, Wb4APR
>
>
> -Jason
> kg4wsv
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