SeeingEyeD0g wrote:

Frequency: 1.8kHz to about 1.9kHz
That is just above the MW (AM) broadcast band! So expect propagation
characteristics to be best during night time hours with possible interesting
propagation occurring within the half hours before and after your local
sunset and sunrise times.

Also known as "gray line propagation", when the terminator passes over
your location. And yes, it really does work. I qso'ed Hawaii from
Michigan on 160 a few times via gray line...

After the sun comes up, the D-layer absorption goes waaay up and 160
(and the BC band) is basically good for ground wave only.

"Carter, K8VT" wrote:

SeeingEyeD0g wrote:

Frequency: 1.8kHz to about 1.9kHz
That is just above the MW (AM) broadcast band! So expect propagation
characteristics to be best during night time hours with possible interesting
propagation occurring within the half hours before and after your local
sunset and sunrise times.

Also known as "gray line propagation", when the terminator passes over
your location. And yes, it really does work. I qso'ed Hawaii from
Michigan on 160 a few times via gray line...

At what time would both Hawaii and Michigan be on the grey line?

dxAce
Michigan
USA

dxAce wrote:

"Carter, K8VT" wrote:

SeeingEyeD0g wrote:

Frequency: 1.8kHz to about 1.9kHz That is just above the MW (AM)
broadcast band! So expect propagation characteristics to be best
during night time hours with possible interesting propagation
occurring within the half hours before and after your local
sunset and sunrise times.
Also known as "gray line propagation", when the terminator passes
over your location. And yes, it really does work. I qso'ed Hawaii
from Michigan on 160 a few times via gray line...

At what time would both Hawaii and Michigan be on the grey line?

And your point is???

They both don't have to be. Please see the real propagation experts
quoted below (not some humbug from a blathering, self-appointed "ace"
poseur). Especially take note of the final sentence of the second quote.

The gray line is not a simple north/south line running around the
globe from pole to pole across the equator; rather, it presents
numerous east/west possibilities.

and from another big gun low band propagation expert:

Some authors have stated that gray line propagation always occurs
along the terminator. On the low bands, there has been only
occasional proof of such propagation. Rather, propagation is through
the dark zone, on a path that (in most cases) is nearly
perpendicular to the terminator. Gray line propagation on the low
bands is a different affair from what is often called gray line
propagation on the (higher) HF bands, where the propagation path does
follow the direction of the gray line.

Also, your mileage figure is about 700 miles short (not that it makes
any difference, mechanism-wise; it just shows a further lack of research
on your part).

So, two items were discussed: mileage and mechanism--and you struck out
on both. Some "ace" you are... :-(

Now be a good boggle boy and finish your homework...

In article ,
dxAce wrote:

"Carter, K8VT" wrote:

SeeingEyeD0g wrote:

Frequency: 1.8kHz to about 1.9kHz
That is just above the MW (AM) broadcast band! So expect propagation
characteristics to be best during night time hours with possible
interesting
propagation occurring within the half hours before and after your local
sunset and sunrise times.

Also known as "gray line propagation", when the terminator passes over
your location. And yes, it really does work. I qso'ed Hawaii from
Michigan on 160 a few times via gray line...

At what time would both Hawaii and Michigan be on the grey line?

During the next pole shift!

--
Telamon
Ventura, California

"Telamon" wrote

At what time would both Hawaii and Michigan be on the grey line?

During the next pole shift!


A shift of the "magnetic" pole, which is happening constantly, would have
zero impact on earth's sunrise/sunset times on any given point of the earth.
The earth would have to physically shift its "axis of rotation" away from
the North star to create a "gray line" that runs through Hawaii and the
mainland. The magnetic pole would follow it.

In article ,
"SeeingEyeD0g" wrote:

"Telamon" wrote

At what time would both Hawaii and Michigan be on the grey line?

During the next pole shift!


A shift of the "magnetic" pole, which is happening constantly, would have
zero impact on earth's sunrise/sunset times on any given point of the earth.
The earth would have to physically shift its "axis of rotation" away from
the North star to create a "gray line" that runs through Hawaii and the
mainland. The magnetic pole would follow it.

I don't mean magnetic, I mean geographic where the earth flips over on
it's axis and I'm joking.

--
Telamon
Ventura, California

Telamon wrote:

I don't mean magnetic, I mean geographic where the earth flips over on
it's axis and I'm joking.


It's happened before. They can tell by the magnetic orientation of
particles in lake bottoms.. If I remember correctly, some lake in Africa
had evidence of a half dozen magnetic pole changes.

Either the core turns, or the shell turns around the core. No one knows
why. It may be precession gone rampant, a huge passing comet or some
other body or something entirely different.

Ancient texts mention the Sun rising from the wrong direction. There may
be truth in that.


Core change, versus crust change, is discussed he

http://www.worldnetdaily.com/news/ar...TICLE_ID=36110



mike

In article Y9tMf.5444$Cp4.1640@edtnps90, m II wrote:

Telamon wrote:

I don't mean magnetic, I mean geographic where the earth flips over on
it's axis and I'm joking.


It's happened before. They can tell by the magnetic orientation of
particles in lake bottoms.. If I remember correctly, some lake in Africa
had evidence of a half dozen magnetic pole changes.

Either the core turns, or the shell turns around the core. No one knows
why. It may be precession gone rampant, a huge passing comet or some
other body or something entirely different.

Ancient texts mention the Sun rising from the wrong direction. There may
be truth in that.


Core change, versus crust change, is discussed he

http://www.worldnetdaily.com/news/ar...TICLE_ID=36110

I am aware of the magnetic pole reversals.

The geographic pole reversal would cause other tremendous earth
environmental changes on a scale that I expect people and most life
would not survive it.

--
Telamon
Ventura, California