[time-nuts] Re: long term eLORAN time-transfer monitoring results?

[Poul-Henning Kamp]

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Pieter-Tjerk de Boer via time-nuts writes:


> > I never managed to decode the data stream usefully, and years
> > later I learned that they transmitted "an evolution" of M.589,
> > without telling anybody, because they assumed they had the
> > only handful of receivers in the world.
>
> I don't think that "evolution" can have made much of a difference.
> I wrote a decoder based on ITU M.589-3 back in 2019, and it has been happily
> decoding Anthorn's eLoran (Eurofix) transmissions ever since:

I played with it 25 years ago, and as I remember it, the NELS eLoran
experiments were run by a group from a (dutch?) university, which
were also the people who wrote M.589 and got it through ITU's
process.

I had very little luck communicating with that group, and I was
left with the impression that they expected their startup to corner
a huge market - and were maybe a little bit less than thrilled to
learn that a hobbyist had written a decoder independently?

As far as I know, Antorn is run by an entirely different crew,
but I dont know if they use the modulator and code generator
from the original NELS experiment or if they have done their
own thing.

And again: I have no idea if the US experiments even use M.589 ...

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