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[aprssig] Lat. / Long. Expressions

Robert Bruninga bruninga at usna.edu
Sun Sep 9 16:49:17 UTC 2007


Agree.  The desired APRS and HAM radio format is degrees and
decimal minutes...  DD MM.hh latitude and DDD MM.hh longitude,
and additional precision is in additional desimal digits beyond
that.

The reason for the standard, is to avoid voice communications
errors when people are communicating positions.  Thanks Bob,
Wb4APR
 

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Jan T.
Pharo
> Sent: Sunday, September 09, 2007 4:04 AM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Lat. / Long. Expressions
> 
> "KB5ILY - Travis W. Burton" <kb5ily at arrl.net>, Sun, 9 Sep 2007
> 02:29:57 -0400 (EDT):
> 
> >In doing some online research I find that one website has my
local
> >hospital's location listed as 34-07-21.3 N, 093-05-25.6 W.  
> Yet another
> >site has it listed as 34.12258  -93.09044.
> 
> The first seems to be degrees, minutes, and seconds with
decimal
> seconds;
> the second is degrees and decimal degrees.
> >
> >Is one way better or worse than the other, and why ?
> 
> Neither, but in APRS (and NMEA), the interchange format is
degrees,
> minutes, decimal minutes. The above position would then be
> 34°07.3548' E, 093°05.4264' W
> 
> -- 
> 73 de Jan, LA2BBA
> Hvaler, Norway
> 
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