Topband: Relationship Between Ground Wave and Low-Angle Radiation

[Richard (Rick) Karlquist]

On 9/13/2019 6:31 AM, N4ZR wrote:
> I don't think I've ever read anything on this topic.  Basically, what 
> I'm asking is, could ground wave to a fairly nearby Skimmer be used as 
> an analogue to low-angle radiation to assess the effectiveness of radial 
> systems on an inverted L?  W3LPL is about 30 miles from me and has a 
> very capable Skimmer Server-based RBN node.
> 

A radial system has nothing to do with take off angle.
Take off angle is strictly affected by ground conductivity
over a much large area than even a "big" radial field.

If you want to improve your inverted L, change it to a
top loaded vertical (IE "umbrella" wires).  That will make a lot more 
difference than adding radials.

Rick N6RK