TopBand: Inverted-L directivity

[Dave Henderson, (Nawvemburr Zeeero Dawg House)]

Bill Tippett wrote:

> This reminded me of a point that I meant to make
> previously when someone said that an Inverted-L had
> its maximum directivity in the direction of the top
> loading wire.  I had a 50 foot Inverted-L up the
> first year I was here in NC and decided to model it
> on Elnec to check the directivity.  I found that the
> pattern was maximized in the direction OPPOSITE to
> the top loading wire.  It was not a lot but on the
> order of a dB or two.  Every little bit helps!
> 
 Bill et all,

I think you will find that the "Front to Back" that 
you were seeing above is a function of the take off
angle, being less than a db @ 5 degrees and almost
3db above 30 degrees

Dave
N0DH

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