[Xastir] MGRS/MGRS-2/MGRS-3

[Curt, WE7U]

Anyone know about these?  When I coded MGRS for Xastir I didn't know
about MGRS-2 or MGRS-3.  Perhaps the code needs to be updated to
match the latest spec?

--
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!"

---------- Forwarded message ----------
Date: Mon, 05 Feb 2007 11:44:50 -0800
From: Charles L. Sparke <clsnv at sbcglobal.net>
Subject: Re: [CSAR] UTM vs USNG

The shift from MGRS  to MGRS-2 was they move the letter combos on us.
The vertical letters (longitude equivalents) stayed the same, but the
horizontal letters (latitdue equivalents) all shifted a bunch of letters
(my area of NV switched from 11T LQ to 11T LE under MGRS-2).  There is
now a MGRS-3, but I haven't seen the difference from 2 yet.  Why the
change and whatever, haven't a clue.  I just know the maps shown on the
USNG site matched the letter sequence on the MGRS-2 screens rather than
the older MGRS-1 I was used to and had maps for.  My guess (and only a
guess) was it was a change induced by the switch to WGS84 from NAD27.
They wanted a bigger change in the system to make it more obvious when
somebody was using the wrong one.

As far as where I got the different MGRS's from, they just showed up on
my Magellan GPS that I got about 3 years ago.  First I knew there was
more than one too.

Charles Sparke