Skip
The switch to settle is at least a clue that its got something by the tail.
A lot depends on the noise at your location. Its only increasing these days.
I need a drop of antenna work but dealing with LEE so maybe Sunday.
Looking forward to trying.
Regards
Paul

On Fri, Sep 15, 2023 at 9:56 AM Skip Withrow via time-nuts <
time-nuts@lists.febo.com> wrote:

John whats your approximate location?
I am near Boston and do not hear Anthorn when I try. When the chain was
operating years ago I could pick up a station at night, in the winter on
occasion. Thats maybe 2700 miles. Perhaps more. All skywave. Using a
preamplified whip antenna. Pretty much a loran c boat antenna.
But have heard nothing for quite a few years. I also for some reason
believe Anthorn is not running at full power. Something I read many years
ago.
The new eLORAN has several purposes. Timing, potentially navigation,
certainly emergency messaging. In the timing respect it can be very good
even in buildings with the coding used. (Its dangerous on Time-Nuts to say
very good. Humor)
Regards
Paul
WB8TSL

On Sat, Sep 16, 2023 at 12:40 AM john.haine--- via time-nuts <
time-nuts@lists.febo.com> wrote:

On 16/09/2023 17:26, john.haine--- via time-nuts wrote:

Airspy HF+ Discovery?

David

SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

I'm in the same area as John and I get a useble signal from MSF at 60kHz,
which is also at Anthorn. I don't know how the transmitters and antennae
compare, though.

On Sun, Sep 17, 2023 at 3:11 PM David Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:

Adrian I can only speculate that they were as good as money allowed at the
time. They were both critical services so I doubt the government was cheap.
But that said the lower in frequency the system is the harder it is to get
something to radiate. In that respect eLORAN is just a bit more easy being
at 100 KHz. But still mighty hard. Not sure why its so hard to build a 70
KM vertical antenna and radials. Thats a total guess by the way.
Regards
Paul.

On Mon, Sep 18, 2023 at 12:21 AM Adrian Godwin via time-nuts <
time-nuts@lists.febo.com> wrote:

At 60 kHz the gap between ocean and the ionosphere is a waveguide,
which bends the signal to match the Earth's curvature, so
there is no theoretical limit to distance, as long as it is over
an ocean.

That is why the first commercial radio-telephone connection between
USA and UK in the 1920ies used 60 kHz.

At 100kHz there is no significant waveguide effect, quite the
contrary, you get "skywave" reflections, in particular at night.

Here is a recording of the "skywave dance" on a typical night at a
distance of approx 200km from the transmitter:

https://phk.freebsd.dk/AducLoran/animation2.gif

Loran-C uses the "3rd positive zero-crossing" as reference because
it is impossible for the skywave to arrive so early, given the height
of the ionosphere.

--
Poul-Henning Kamp      | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG        | TCP/IP since RFC 956
FreeBSD committer      | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.

Well the 2100F seems to have started to grab something here in Boston
around 1300 local. Have a scope turned on and looking at the gated output
signal to see what might be there. Nothing all that obvious. If I get
anything it will be by skywave.
Regards
Paul

On Tue, Sep 19, 2023 at 11:18 AM Poul-Henning Kamp phk@phk.freebsd.dk
wrote: