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
<paulsw...@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 <mag...@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 <mag...@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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