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...