[aprssig] Internet to RF gating of positions
scott at opentrac.org
Sun Aug 31 12:36:45 CDT 2008
If I remember correctly, IGates are supposed to gate a position for a
station to RF when they pass a message from that station to RF, right?
Do they all do this? If so, do they pass the last heard position, or do
they wait for another one? Is this actually documented anywhere?
I had an idea to create a Geocaching gateway - you'd just send a message
to CACHE and it would respond by sending (as stations, in case objects
aren't gated) positions for the nearest few (non-virtual) caches, plus
messages including difficulty and name. For example:
:GCK7X7 :Eagle Reef Scuba Cache D4/T5/R
That's difficulty = 4, terrain = 5, regular size. Multi-part and other
non-traditional caches could be excluded, since they usually require
more information than you could squeeze into a brief message.
Fortunately the caches all have unique 6-digit identifiers already that
aren't likely to be duplicated on APRS. Making the system useful
requires getting position packets for the caches to the requester, though.
The other difficulty is getting access to the Geocaching API to do the
queries in the first place. I'm looking into that, though.
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