[time-nuts] eLORAN in the Antipodes ? (was: Re: eLORAN will be on the air GRI 99600)

[paul swed]

Exactly and at night you have groundwave and skywave. In reality both exist
all of the time its just the strength changes. This is why LORAN C radios
have ability to reduce the effects of skywave. It has to do with the
structure of teh transmitted signal.
Paul

On Fri, Aug 7, 2020 at 6:25 PM Gilles Clement <clemgill at gmail.com> wrote:

> Would’nt 100khz carrier propagate mostly by ground wave (during day time)
> ? So following earth curvature ?
> Gilles.
>
>
> > Le 7 août 2020 à 21:34, paul swed <paulswedb at gmail.com> a écrit :
> >
> > Taka
> > Yes it does. More ionosphere than air. It would be skywave or indirect
> > path. I mentioned that earlier.
> > Now silly thought would a huge antenna work especially if you are at the
> > antipode. Further would it be gray line propagation.
> > Thats just silly talk. But something to think about.
> > Regards
> > Paul.
> >
> >> On Fri, Aug 7, 2020 at 2:01 PM Taka Kamiya via time-nuts <
> >> time-nuts at lists.febo.com> wrote:
> >>
> >> Wouldn't such a long distance propagation result in less precision?  The
> >> signal will have to go through distance through air which isn't
> constant in
> >> dialectic values.  Wouldn't it be problematic for level of accuracy we
> >> pursue?
> >>
> >> ---------------------------------------
> >> (Mr.) Taka Kamiya
> >> KB4EMF / ex JF2DKG
> >>
> >>
> >>    On Friday, August 7, 2020, 9:14:23 AM EDT, paul swed <
> >> paulswedb at gmail.com> wrote:
> >>
> >> I believe South Korea is indeed building new eLORAN chains. I have seen
> >> mention of it.
> >> With respect to distance In the US I could occasionally receive the
> >> European West chain at night and in the winter. Thats about 3200 miles.
> It
> >> would also be by skywave so that deteriorates accuracy.
> >> Regards
> >> Paul
> >> WB8TSL
> >>
> >>> On Fri, Aug 7, 2020 at 5:26 AM Björn <bg at lysator.liu.se> wrote:
> >>>
> >>> Are not South Korea are building one? new eLoran chain?  Are they
> >>> transmitting? But don’t underestimate the distances from south east
> Asia
> >> to
> >>> the far side of Australia.
> >>>
> >>> /Björn
> >>>
> >>> Sent from my iPhone
> >>>
> >>>> On 7 Aug 2020, at 10:24, Poul-Henning Kamp <phk at phk.freebsd.dk>
> wrote:
> >>>>
> >>>> --------
> >>>> Hugh Blemings writes:
> >>>>
> >>>>> Been following this thread with the usual mixture of joy, awe and
> >>> wonder
> >>>>> (truly!) - fantastic stuff :)
> >>>>>
> >>>>> My read of the situation is that there is next to no chance of
> >>> receiving
> >>>>> any meaningful signal at the VLF frequencies in question down here in
> >>>>> Melbourne - a great circle path of some 10,000 mi / 16000 km ?
> >>>>
> >>>> You might be able to pick out the Chinese Loran chains, I believe
> >>> they're still up.
> >>>>
> >>>> (Use sdr.dh web-sdr's to find out ?)
> >>>>
> >>>> --
> >>>> Poul-Henning Kamp      | UNIX since Zilog Zeus 3.20
> >>>> phk at FreeBSD.ORG        | TCP/IP since RFC 956
> >>>> FreeBSD committer      | BSD since 4.3-tahoe
> >>>> Never attribute to malice what can adequately be explained by
> >>> incompetence.
> >>>>
> >>>> _______________________________________________
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> >>>
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