Walt,
The body of mark's message is pasted below. I used to have the same problem posting with AOL during DXpeditions, until Theo D. told me to try something else :-)
73, Gary
Pasted:
Could the anomalous results be from the fact that sometimes at the sunrise or
sunset transition you actually have higher angle pick-up for long haul because
of a tilted ionospheric layer above the receiving site (enabling chordal /
ducted mode propagation reducing the number of ground
reflections)?
http://www.radtelnetwork.com.au/propagation/HFpropagation_files/img013.gif
An
antenna that is efficient for high angles may briefly outperform otherwise
superior long haul DX (i.e. low angle pick-up) antennas.
There used to be a
station near Madrid, Spain on 1359 kHz that ran big power into a Near Vertical
Incidence Skywave antenna (horizontal dipole?) to push out high angle skip to
penetrate isolated valley areas between mountains. Here in Massachusetts during
mid-evening the station was no stronger than other high band Spain stations in
the 5 to 10 kW class. But as dawn reached Madrid, the signal came up and got
crazy-loud, often the strongest station from across the "pond" at the
time.
160-m hams have reported that they have brief periods when a low
dipole or horizontal loop below quarter-wave height ("cloud burner") contacts DX
that their big verticals or high-altitude beams or dipoles miss. 95% of the
time it's the other way around of course.
Mark Connelly, WA1ION
South
Yarmouth, MA
----- Original Message -----
From: "Walter Salmaniw" <canswl@xxxxxxxxx>
To: "Mailing list for the International Radio Club of America" <irca@xxxxxxxxxxxxxxxx>
Cc: "Mark Connelly" <markwa1ion@xxxxxxx>
Sent: Wednesday, October 21, 2015 10:23:16 AM
Subject: Re: [IRCA] Beverage versus DKAZ (was: TP for 20 October from Masset)
Mark, I'll have to wait a few days since the body of your email doesn't
show on my iPhone. Walt
On Wednesday, 21 October 2015, Mark Connelly via IRCA <irca@xxxxxxxxxxxxxxxx>
wrote:
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