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

[Bill Notfaded]

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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