Topband: QRN angle

[Bob Kupps]

That's interesting info Dave. Doing antenna modeling I notice that some directional configurations have two vertical back lobes the relative gain of which can be varied. At my QTH the main thunderstorm activity during the winter DX season is > 1000 miles away so from this info I would favor a design with a weaker low angle back lobe.
Does anyone in the group have a comment on typical 160m QRN arrival angles at their QTH?
73 Bob N6BK/HS0ZIA

Craig says: Phrasing it another way, what are the optimal take-off angles on
160 for
working stations within a radius from 100 to 1000 miles?  I'm located in
Colorado, if that is any consideration.

              ... Craig  AC0DS

Answer:

100 mile path TOA = 74 deg
250 mile path TOA = 55 deg
500 mile path TOA = 33 deg
850 mile path TOA = 19 deg
1000 mile path TOA = 15 deg

  Dave WX7G