[Antennaware] 4 sq. AZ and EL gain

Andy Ikin andrew.ikin at btopenworld.com
Thu Jul 9 02:05:37 PDT 2009

Terry and Guy,

Thanks for the replies.

I am using EZNEC+.  The gain difference is as Terry commented; I hadn't set 
the Az angle to 45 degrees for the El plot. It makes sense now.



----- Original Message ----- 
From: "Terry Conboy" <n6ry at arrl.net>
To: "Andy Ikin" <andrew.ikin at btopenworld.com>
Cc: <antennaware at contesting.com>
Sent: Thursday, July 09, 2009 3:43 AM
Subject: Re: [Antennaware] 4 sq. AZ and EL gain

> 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.??
>> 73
>> Andrew
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