[Lowfer] Question...

Tue, 30 Dec 2003 20:43:39 -0500

Thanks, Dex!

Mike
wm1ke

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Dexter McIntyre W4DEX
> Sent: Tuesday, December 30, 2003 8:27 PM
> To: [email protected]
> Subject: Re: [Lowfer] Question...
>
>
> FWIW, very little I suspect, here is an Argo pic of loran lines I
> saw about a
> month ago on 137 kHz.
>
> http://w4dex.com/argo/137khz/137.775loranlines.jpg
>
> I don't claim all these lines to be properly labeled but I think
> they do fall
> right on the freqs listed in John's very useful loran chart posted at:
>
> http://www.lwca.org/library/reference/loran_lines.htm
>
> When we first started looking for trans-Atlantic signals on 137 I
> considered
> these lines to be a nuisance.  Now I see them as very useful for frequency
> checks, propagation and determining local noise conditions.  Argo
> does not show
> QRN very by design I assume.  So when I see a local loran line
> start breaking up
> I know the band is noisy.
>
> Dex
>
>
>
> John Davis wrote:
>
> > As I recall, this was one of the possible purposes John Andrews
> mentioned in
> > connection with his list of LORAN lines, and why each line is
> identified by
> > its associated chain on that page.  Since each site in a chain
> contributes
> > to a given line, its strength signifies propagation quality
> only in a very
> > broad general direction.  A chain  that encompasses the
> receiving site would
> > thus be less helpful than a chain farther away, for instance.
> >
> > We see the occasional reports here that LORAN lines in general
> seem strong
> > or not on a given occasion.  But I think it's an idea that hasn't been
> > adequately explored on a systematic basis yet.
> >
> > John
> >
> > -----Original Message-----
> > From: Mike Staines <[email protected]>
> > To: Lowfer <[email protected]>
> > Date: Tuesday, December 30, 2003 7:15 PM
> > Subject: [Lowfer] Question...
> >
> > >Has anyone ever considered/studied/used Loran lines as a predictor of
> > >propagation conditions?
> > >
> > >Now that I have a fairly decent RX setup here at the winter HQ, I have
> > begun
> > >to notice that the fade patterns of some beacons coincide with the
> > >appearance/disappearance of loran lines. I am wondering if we
> could predict
> > >propagation based upon the loran lines we are seeing at any given time.
> > >
> > >Am I reinventing the wheel (as I often do) ?
> > >
> > >Mike
> > >wm1ke
> > >
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