[time-nuts] Re: eLORAN West coast stations off air due to Air con.

[paul swed]

Hi Jeff I don't actually work for URSA NAV. But am familiar with whats
typically operating.
There are 3 sites.
Georgein George Washington. (Have fun looking that up) 2MW.
Fallon NV 400 KW
Montana don't recall the city 300-400KW.
The old system may have been one of the west coast chains and they would be
stronger.
You pretty much have mountains between you and the transmitter.
They have been funded for at least another year and have been operating for
3 years.
Caution. God knows if the funding might be clawed back. Its really a drop
in the federal budget.
As far as I know the testing has been to check signal encoding formats and
effectiveness.
No published results that I have seen.
They will be back after the air con gets fixed.
I am on the east coast and the signals do show up here typically from
10pm-7am.
Pretty weak, but the austrons do a great job of tracking and logging.
Hope that helps.
Paul
WB8TSL

On Fri, Aug 8, 2025 at 9:15 PM Jeff Huselid via time-nuts <
time-nuts at lists.febo.com> wrote:

> Greetings,
>
> Can you provide some information regarding the recent E-Loran-C tests -
> such as site locations and power levels? I have been copying them here with
> my Austron 2100F and loop antenna for about a year, but not as strong as
> the old system. Any idea how long the tests might continue, after they
> repair the A/C? There doesn't seem to be much public information out there
> regarding this.
>
> Best regards,
> Jeff Huselid
> Valley Communication Engineering
> 3145 South De Wolf Avenue
> Fresno, CA 93725
> Phone 559 268 3311
> Dun & Bradstreet DUNS 36-334-2460
> Precision Services Since 1977
>
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> From: jmfriedt via time-nuts <time-nuts at lists.febo.com>
> Sent: Thursday, August 7, 2025 9:47 AM
> To: paul swed via time-nuts <time-nuts at lists.febo.com>
> Cc: jmfriedt <jmfriedt at femto-st.fr>
> Subject: [time-nuts] Re: eLORAN West coast stations off air due to Air con.
>
> Thanks for confirming, I hope the A/C issue can be solved. In the mean
> time I had a quick look at the emission from Anthorn and can confirm
> the +/-1 us PPM modulation is visible as +/-36 degree phase modulation
> of each pulse at
>
> https://github.com/jmfriedt/kiwisdr_timetransfer/blob/main/eloran_PEN_phase.png
> so if the soft to hard bit detection is that simple, the challenge will
> be binary sentence decoding if the signal matches the documentation, and
> implementing FEC.
>
> Thanks for the support, Jean-Michel
>
> > Hello to the time-nut group. Thanks for giving me a heads up on the
> > eLORAN signals on the West coast. You are correct all 3 stations are
> > off the air for the moment.
> > This is due to air conditioning issues that are being worked on.
> > The buildings and physical systems are quite old so failures are
> > expected. It will be a bit but the stations will return to operation.
> > I had been monitoring but have been working on remote interfaces for
> > the old austron LORAN C receivers. So not actually logging or
> > listening. Appreciate your emails.
> > Paul
> > WB8TSL
> > _______________________________________________
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>
>
> --
> JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000
> Besancon, France
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