[amsat-bb] iOS app Maidenhead

Paul Stoetzer n8hm at arrl.net
Tue Apr 30 18:49:34 UTC 2019


And then you have the western states whose borders are determined based on
"degrees west of Washington" which will not fall on grid lines because the
Washington meridian, at the Old Naval Observatory, is about 3 minutes west
of 77 degrees west.

73,

Paul, N8HM

On Tue, Apr 30, 2019 at 2:44 PM Patrick STODDARD (WD9EWK/VA7EWK) via
AMSAT-BB <amsat-bb at amsat.org> wrote:

> Hi Doug!
>
> I trust the latitude/longitude readings from my GPS receiver
> (or GPS in phones or radios), but do not rely on those for
> county, state/province, or international boundaries. For these
> boundaries, I rely on markers/signs. For example, the boundary
> between the states of Arizona and Utah was supposed to follow
> 37 degres North exactly - but it was surveyed long before we
> had GPS. At some points, that boundary is just north of 37
> degrees North (DMx6/DMx7 grid boundary). Near Lake Powell, the
> grid boundary falls in Arizona. Along US-160 or US-191 further
> east, the grid boundary falls in Utah. This is even more
> pronounced along portions of the USA/Canada border, especially
> the section that is supposed to follow 49 degrees North from
> Washington state to Minnesota's Northwest Angle.
>
> 73!
>
>
>
>
>
> Patrick WD9EWK/VA7EWK
> http://www.wd9ewk.net/
> Twitter: @WD9EWK or http://twitter.com/WD9EWK
>
>
>
>
>
> On Tue, Apr 30, 2019 at 5:59 PM Douglas Tabor via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
>
> > How much trust does one have WRT state boundaries and what Maidenhead
> > displays? The borders are often not straight nor do they always align
> with
> > Lat/Lon ... looking at Wyoming, we seem to have 8 more grids than our
> > rectangular shape would have one believe (some from Colorado and others
> > from Montana).
> >
> > Anyone else see this or similar?
> >
> > Thanks and 73,
> >
> > Douglas Tabor,  N6UA
> >
> >
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