On 21 Sep 2006 20:16:31 -0700, "art" wrote:

give the average arrival angles over a 11 year period so it is not a
hopeless task to get a ball park figure regarding usefull radiation
knowing where the target is

Hi Art,

It is instructive for others to consider, so I shall proceed with very
few of those variables considered (we can see you offer nothing in the
way of time of year, time of day, frequency, Sun spot count, and so
on):

20M 0000 UT Spring 5-7 deg

20M 0000 UT Summer 4 deg

20M 0000 UT Fall 6-8 deg

20M 0000 UT Winter 7 deg

20M 1200 UT Spring 3 deg

20M 1200 UT Summer 2-10 deg (depending)

20M 1200 UT Fall 2-3 deg

20M 1200 UT Winter 4-6 deg

40M 0000 UT Spring 10 deg

40M 0000 UT Summer 8-12 deg

40M 0000 UT Fall 3-12 deg (depending)

40M 0000 UT Winter 3 deg

The numbers above say absolutely nothing about the probability of
making a contact.

If you stacked 4 to 8 yagis as high as 4 wavelengths, you might find
something "efficient."

73's
Richard Clark, KB7QHC