[aprssig] conveying map view
bruninga at usna.edu
Wed Sep 22 08:50:37 CDT 2004
This is a good idea. We just need to choose an APRS
symbol that means to do it. I suggest the EYEBALL?
On Tue, 21 Sep 2004, Bill Herrmann wrote:
> At 05:10 PM 9/21/2004 -0700, Curt Mills wrote:
> >I'm starting to like the idea of posting an object of a certain
> >format, rather than a message. If it had a standard format, clients
> Curt's onto something here. APRS clients already support it and...
> (from the APRS spec - in the object/item section)
> The position may be in lat/long or compressed lat/long format, and the
> report may also contain Extended Data.
> Guess what we already have in the extended data definitions... Range!
> (from the APRS spec)
> The 7-byte RNGrrrr Data Extension allows users to transmit a precalculated
> omni-directional radio range, where rrrr is the range in miles (with
> leading zeros). For example, RNG0050 indicates a radio range of 50 miles.
> Sounds to me like it is an already defined frame that can contain both
> center and range information. Not only that, but objects, by definition,
> are supposed to include the senders callsign. (I should note that either
> objects or items would appear to work.)
> The only compromise involved is to change the range meeting from RF range
> to range of map view. I think most of us would agree that that is a
> reasonable change.
> aprssig mailing list
> aprssig at lists.tapr.org
de WB4APR at amsat.org, Bob
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