[time-nuts] eLORAN will be on the air GRI 99600

Thu Aug 6 22:24:12 UTC 2020

Transit has been off the air some 20+ years. It really was one of the
beginnings of satellite navigation.
Regards Paul

On Thu, Aug 6, 2020 at 5:40 PM Bill Notfaded <notfaded1 at gmail.com> wrote:

> Isn't there also CDMA?  We used a EndRun Technologies system not long ago
> that used a small short antenna that could be located inside and didn't
> need a cable to the roof for a GPS antenna.  This was handy for rooms that
> couldn't have anything penetrate the walls at all.  It was a good reference
> and ntp server we used for years that only used time reference from CDMA
> satellites.
>
> Bill
>
> On Thu, Aug 6, 2020, 1:43 PM jimlux <jimlux at earthlink.net> wrote:
>
> > On 8/6/20 9:17 AM, Taka Kamiya via time-nuts wrote:
> > > Someone in this thread mentioned "at least 2 satellite time and
> > frequency solutions" exists already.  I only know of GPS (GNSS)
> > constellations.  What's the other?
> >
> > Transit?
> >
> > I don't believe they are still operational, though.
> >
> >
> > I wonder if one might be able to pick up time/frequency from a
> > commercial TV broadcast transponder.  The transponders on the satellite
> > are typically bent pipes (for C-band anyway), I would assume that the
> > uplinks may or may not have stability comparable to terrestrial
> broadcast.
> >
> > One problem is, of course, that the satellites aren't in a stable
> > location (at least on a "meters" scale) - but one could certainly do
> > "common view" kinds of time transfer.
> >
> >
> >
> >
> > >
> > > ---------------------------------------
> > > (Mr.) Taka Kamiya
> > > KB4EMF / ex JF2DKG
> > >
> > >
> > >      On Thursday, August 6, 2020, 12:01:27 PM EDT, paul swed <
> > paulswedb at gmail.com> wrote:
> > >
> > >   Magnus
> > > Its honestly by luck that I know anything. From the bits I have read
> > Europe
> > > seems far closer to eLORAN then we are. Perhaps 6 months ago the US
> > > performed a series of tests 2 eLoran solutions and something like 6 or
> > more
> > > satellite solutions. I know the old Iridium satellites were in the
> tests
> > > and some other LEO satellites.
> > > But thats about it.
> > > What we need is a cheap SDR LORAN C sniffer. Low power runs 24 X 7 and
> > > turns a LED on if the stations active.
> > > Oh well another project in the someday pile.
> > > Regards
> > > Paul
> > > WB8TSL
> > >
> > > On Thu, Aug 6, 2020 at 2:42 AM Magnus Danielson <magnus at rubidium.se>
> > wrote:
> > >
> > >> Hi Paul,
> > >>
> > >> I only ask as you seem to track this thing the best here on time-nuts,
> > >> as far as I have seen, such that it is your emails that keeps me best
> up
> > >> to date with the progress.
> > >>
> > >> Cheers,
> > >> Magnus
> > >>
> > >> On 2020-08-05 19:21, paul swed wrote:
> > >>> Hi Magnus been a while since have emailed.
> > >>> Its one site that was a test transmitter. Its in New Jersey, USA.
> > >>> The goal of the testing I believe is to establish the viability of an
> > >>> alternate PNT reference to GPS. Additionally the ability to
> communicate
> > >>> some level of message broadcast. This should be identical to
> proposals
> > I
> > >>> have heard of in Europe.
> > >>> But I have no direct relationship to any of this. Like you, a very
> > >>> interested observer and hope that eLORAN wins the battle.
> > >>> Unfortunately there are many alternate proposals such as using other
> > >>> satellites. Hmmm if I wanted to advance my career in the Air Force or
> > >> Space
> > >>> Force (Yes thats actually real now).
> > >>> Would I select the lowly reliable as heck eLORAN at sub $100 M/year
> to
> > >>> operate. Or the glorious space based proposals in $B region. Never
> mind
> > >>> that at least 3 countries now have demonstrated killer satellites.
> > >>> Sorry for that editorial.
> > >>> Regards
> > >>> Paul
> > >>> WB8TSL
> > >>>
> > >>> On Wed, Aug 5, 2020 at 11:04 AM Magnus Danielson <magnus at rubidium.se
> >
> > >> wrote:
> > >>>
> > >>>> Hi,
> > >>>>
> > >>>> Do you know that they would do test with two actual transmitter
> sites?
> > >>>>
> > >>>> Cheers,
> > >>>> Magnus
> > >>>>
> > >>>> On 2020-08-05 16:00, paul swed wrote:
> > >>>>> Hello to fellow time nuts.
> > >>>>> Warm up those old Austrons. eLORAN out of New Jersey has been on
> the
> > >> air
> > >>>>> intermittently prior to a test run next week. Due to the storm they
> > >> have
> > >>>>> lost power and should have it back today or tomorrow.
> > >>>>> The intention will be on the air operation till the 20th. That's a
> > long
> > >>>>> run. Nice.
> > >>>>> Seems the Austron 2100s can be had for reasonable money these days
> > >> also.
> > >>>>> Enjoy.
> > >>>>> Paul
> > >>>>> WB8TSL
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