AutoEZ appears to be like AO/YO on steroids and it is pretty inexpensive. I
wish that the product was around when I designed my antenna farm. I concur,
it is really amazing what designers achieved by simply manually changing
element lengths and spacing. I have used the manual method for smaller OWA
beams but I had no success designing larger multiband beams.
John KK9A
Sent via the Samsung Galaxy 7 edge, an AT&T 4G LTE smartphone.
On Wed, Nov 29, 2017 at 12:10 AM, Grant Saviers <grants2@pacbell.net> wrote:
> There are a number of performance parameter choices for optimizing - gain,
> swr, & F/R are the 3 most useful for me of the 6 possible, over a range of
> frequencies of your choosing and weighting factors re how important each
> one is for you. Of course they all interact so some judgement is needed
> in what you ask the optimizer to do. There isn't much to optimize with only
> 2 elements but I think with any interlaced design AutoEZ is a must. It is
> amazing what designers achieved on multiband designs before Dan produced
> this tool.
>
> I've noticed with 5 and 6 element designs I've done, that once 50 ohms is
> specified as the feedpoint Z, OWA looking designs seem to pop right out of
> the optimizer.
>
> Grant KZ1W
>
> On 11/28/2017 18:43 PM, john@kk9a.com wrote:
>
>> Can it optimize for a specific impedance? In other words can it design an
>> OWA?
>>
>> John KK9A
>>
>> -----Original Message-----
>> From: Stan Stockton [mailto:wa5rtg@gmail.com]
>> Sent: Tuesday, November 28, 2017 9:36 PM
>> To: john@kk9a.com
>> Cc: towertalk@contesting.com
>> Subject: Re: [TowerTalk] 2-el 15/20 meter duobander
>>
>> Anther reason to own AutoEZ. It can design a duo bander for you in about
>> ten minutes.
>>
>> Stan, K5GO
>>
>> On Nov 28, 2017, at 7:18 AM, "john@kk9a.com" <john@kk9a.com> wrote:
>>>
>>> I played modeling 2el dual banders a long time ago and I recall having
>>> success just putting the higher frequency Yagi in-between the elements
>>> of the lower frequency Yagi. It is easy to model and see what happens.
>>> Adding more elements and more bands really complicates things, kudos
>>> to the designers of the excellent multiband interlaced beams.
>>>
>>> John KK9A
>>>
>>>
>>> To: towertalk@contesting.com
>>> Subject: [TowerTalk] 2-el 15/20 meter duobander
>>> From: Tom Osborne <w7why1@gmail.com>
>>> Date: Mon, 27 Nov 2017 12:58:40 -0800
>>> List-post: <mailto:towertalk@contesting.com>
>>> Hi all
>>>
>>> I have a HB 2-el 20 meter monobander on a 16 foot boom. I would like
>>> to add 15 meters to this antenna, but can't find any diagrams anywhere
>>> for such an animal. Googled it but no joy.
>>>
>>> Does anyone know of a good setup for 20 and 15 on the same boom
>>> without interaction to each other?? Thanks and 73 Tom W7WHY
>>> __________
>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>> _______________________________________________
>>
>>
>>
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>>
>
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