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[aprssig] ISS Tracking & Pass Information

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Fri Oct 14 17:54:02 UTC 2011


Wait a minute here.  Let me bring this back into context.

a) I will be allowing, but not requiring the dash in the satellite 
name.  As was pointed out, Yaesu radios can only send messages to 
AX.25-compliant station IDs, regardless of the fact that an 
APRS-IS-resident station is not constrained by this restriction and the 
APRS spec never puts such station's callsigns in the AX.25 header, but 
only in the payload for messaging.

b) I've got a program that's listening to EVERY message passing on the 
APRS-IS stream and monitoring that stream for actual satellite 
callsigns.  If I start doing "lazy matches" on that stream, I'll end up 
responding to lots of things that weren't directed to me.  "SAG" comes 
to mind as I'm sure I could think that is some sort of satellite name.

No, if the messages were directed to "SATSRV" or something else that is 
specific (and hard to remember), I could be loose and flexible in the 
interpretation of the content.  But I want to keep this simple by having 
the messages sent to the satellite name as if it were the station being 
addressed.  It works, but I really can't be loose in the interpretation.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 10/14/2011 9:01 AM, Patrick Strasser wrote:
> Am 2011-10-14 12:14, schrieb Lynn W. Deffenbaugh (Mr):
>
>> I will look at not requiring the dash in the satellite name.  That was
>> in my plans, but I haven't gotten it implemented yet.
> I' suggest to make it rather flexible: a dash should be ignored, so if
> someone knows the exact name, it still matches. Would make it more
> complicated to _require_ the absence of a dash.
>
> For shortening names something like a lazy match would be nice: If the
> sent prefix is enough to identify a single satellite, resolve the
> request, otherwise answer with a message saying that the name ambiguous,
> with possibly a list of matching satellite names. I would expect it to
> work like tab completion in various Unix shells.
>
> 73 de Patrick




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