Re: Free Antenna programs

From	jimp@specsol.spam.sux.com
Newsgroups	sci.physics
Subject	Re: Free Antenna programs
Date	2015-11-26 23:46 +0000
Organization	A noiseless patient Spider
Message-ID	<k7ikic-j44.ln1@mail.specsol.com> (permalink)
References	<n37fsm$ssu$1@speranza.aioe.org> <5j6kic-ul2.ln1@mail.specsol.com> <n3831q$n5p$1@speranza.aioe.org>

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gilber34 <fafa@invalid.com> wrote:
> On 11/26/2015 2:27 PM, jimp@specsol.spam.sux.com wrote:
>> gilber34 <fafa@invalid.com> wrote:
>>>
>>>
>>>
>>> http://www.qsl.net/4nec2/
>>>
>>> http://hamsoft.ca/pages/mmana-gal.php
>>>
>>>
>>>
>>> older
>>>
>>> http://wb0dgf.com/mininec.htm
>>>
>>>
>>> EZNEC is $89 (?) and user friendly better GUI, has a free demo version
>>> useful in a lot of cases
>>
>> You finally figured that out after being told how many times now?
>>
>> But, like everything else, you are wrong about the price.
>>
>> It is $99 for EZNEC and $149 for EZNEC+, which has more features.
>>
>> There is a Pro version that requires you have a valid NEC-4 license from
>> the University of California (Lawrence Livermore National Laboratory).
>>
>> There is also the AutoEZ application (not free) that allows you to
>> define an antenna as variable and equations.
>>
>>
> 
> $149 + $79, actually not that expensive

There is nothing that is "$149 + $79"; wrong again.

> here is a link to rolling off (phase variation) the edge of a parabolic 
> antenna to reduce backlobe:     (1969)
> 
> https://www.google.com/patents/US3599219

So what?


> so on C band the outter 4 inches at the edge are intentionally bent back 
> on modern dishes, not to follow a parabolic, to avoid diffraction adding 
> in phase at the backlobe.
> (Kraus has a lot on parabolics in his "Radio Astronomy" book -may have 
> been limited # of copies of it (?)- the book to have for doing your own 
> radio astronomy, shows what happens to the pattern if your want to focus 
> a degree or two off axis)
 
You are a babbling idiot with no understanding of basic RF no matter
how many links you dredge up. 
 

-- 
Jim Pennino

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Free Antenna programs gilber34 <fafa@invalid.com> - 2015-11-26 11:35 -0600
  Re: Free Antenna programs jimp@specsol.spam.sux.com - 2015-11-26 20:27 +0000
    Re: Free Antenna programs gilber34 <fafa@invalid.com> - 2015-11-26 17:02 -0600
      Re: Free Antenna programs jimp@specsol.spam.sux.com - 2015-11-26 23:46 +0000

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