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[aprssig] Is the APRS Spec for APRS Data Type Identifier justrandomly ignored? Should it be?

Cap Pennell cap at cruzio.com
Wed Aug 17 18:56:52 UTC 2005


If these folks simply inserted a ">" as the beginning of their text, they'd
become valid APRS Status packets (as was their intent).
73, Cap

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org
> [mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Curt, WE7U
> Sent: Wednesday, August 17, 2005 08:24 AM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Is the APRS Spec for APRS Data Type Identifier
> justrandomly ignored? Should it be?
>
>
> On Tue, 16 Aug 2005, James Washer wrote:
>
> > I should have known better than to look at  data coming over
> > APRS-IS.... however....  I find that MANY packets contain a data
> > type identifier(DTI) that is reserved per the spec, or is misused,
> > etc.
> >
> > For example, DTI 'A'-'S' are marked "do not use" but I see
> > countless packets like this:
> > WA6LDQ-3>BEACON,W6BXN-3*,qAo,K6TJS:APRS Digi in Bear Valley
> Springs 11 Miles W. of Tehachapi @ 5885 ft.
> > WHTNY>BEACON,WIDE,WIDE3-3,qAo,KX5N:APRS digi on Whitney Mt. @
> 2000 ft. near Lost Valley Bridge.
> KE5PL-1>BEACON,qAR,K5WTC-10:APRS for West Texas
> bjmcdaniel at att.net b0 VE5ADR-4>APRS,WIDE,WIDE,qAR,VE5DGD-4:APRS
> Digipeater serving Southern Saskatchewan. Email ve5dgd at rac.ca
>
> These two are being sent to BEACON, so are not APRS packets (unless
> you consider BEACON as an ALTNET).  The other possibility would have
> been a Mic-E formatted packet, but these are not.  These should be
> mostly ignored by APRS stations I believe.  This means they just
> clutter up the air a bit for no net gain.
>
>
> > And these, where DTI 'T' is supposed to be used for telemetry,
> but we see packets like this..
> > W6BXN-3>APTW01,WIDE,qAo,KF6HJO:TARCWX
> > W6BXN-3>BEACON,WIDE,qAo,K6TJS:Turlock Amateur Radio Club
> WIDEN-n Wx
> W6PVG-3>BEACON,WA6LDQ-3*,WIDE3-3,WA6YLB-4,qAo,KF6HJO:Tehachapi
> Digi @ 7600 feet
> >
> > So, should I just give up and accept that people mis-configure
> their boxes... or should I make an attempt at automating
> something to send polite email to these folks?
>
> They should be encouraged to put their info beacons into the format
> of APRS packets, either as status packets or as comments to position
> packets.  APRS clients would then decode/display this information
> readily.
>
> --
> Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
> "Lotto:    A tax on people who are bad at math." -- unknown
> "Windows:  Microsoft's tax on computer illiterates." -- WE7U
> "The world DOES revolve around me:  I picked the coordinate system!"
>
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