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

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 > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com -- JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000 Besancon, France

I am sure it has FEC and that is nasty to work with. I had to create the FEC for the US WWVB station. What a pain. As I think about the FEC, it was not that hard. Getting the correct documentation was. Paul WB8TSL On Thu, Aug 7, 2025 at 12:47 PM jmfriedt <jmfriedt@femto-st.fr> wrote: > 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 > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > > > > -- > JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000 > Besancon, France >

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 ITAR COMPLIANCE ALERT The information contained in this message may be subject to International Traffic in Arms Regulations (ITAR) or Export Administration Regulation (EAR) Controls, and may not be disclosed to any foreign person or firm, including foreign persons employed by or associated with your firm, without first complying with all requirements of the ITAR, 22 CFR 120-130 and the EAR, 15 CFR 730-774, including the requirement for obtaining an export license if applicable. ________________________________ From: jmfriedt via time-nuts <time-nuts@lists.febo.com> Sent: Thursday, August 7, 2025 9:47 AM To: paul swed via time-nuts <time-nuts@lists.febo.com> Cc: jmfriedt <jmfriedt@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 > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com -- JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000 Besancon, France _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-leave@lists.febo.com

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@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 > > ITAR COMPLIANCE ALERT > > The information contained in this message may be subject to International > Traffic in Arms Regulations (ITAR) or Export Administration Regulation > (EAR) Controls, and may not be disclosed to any foreign person or firm, > including foreign persons employed by or associated with your firm, without > first complying with all requirements of the ITAR, 22 CFR 120-130 and the > EAR, 15 CFR 730-774, including the requirement for obtaining an export > license if applicable. > ________________________________ > From: jmfriedt via time-nuts <time-nuts@lists.febo.com> > Sent: Thursday, August 7, 2025 9:47 AM > To: paul swed via time-nuts <time-nuts@lists.febo.com> > Cc: jmfriedt <jmfriedt@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 > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > > > > -- > JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000 > Besancon, France > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com