Is it possible you are looking at the elevation pattern at 45 degrees
off of boresight? Say at 0 or 90 degrees azimuth? The models that come
with EZNEC at oriented with line of the elements parallel to the X and Y
axes, so the main lobe is at 45 degrees and the gain at 0 or 90 is down
about 2.5 dB.
73, Terry N6RY
On 2009-07-08 3:35 PM, Andy Ikin wrote:
> Hello Folks,
> I am trying to make some meaningful RDF comparisons with Vertical arrays,
> K9AY arrays and 4 sq. Vertical arrays.
> I appear to have an anomaly with the 4 sq. i.e. If I look at the max. EL gain
> (TOA ) at say 20 degrees. I have say 4.0dBi. I then look at the AZ gain at
> 20 degrees the gain is approx. twice the EL gain.
> Looking at examples of Vertical and K9AY arrays the max. EL gain (TOA ) is
> equal to the AZ gain at the same TOA; This would appear to be correct.
> So what am I doing wrong with the 4 Sq.??
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