[Elecraft] Beam antenna question

[Ted Edwards W3TB]

I really appreciate the answers to my question about further disguising the
Hex from neighbors -- thanks for those.

On Sun, May 21, 2017 at 7:59 AM, Joe Subich, W4TV <lists at subich.com> wrote:

> On 5/21/2017 12:45 AM, Vic Rosenthal wrote:
>
>> The TH11DXX that G3TXQ compares to the Hexbeam has at least 3 elements on
>> each band and is a modern design, no traps.
>>
> The TH11 has driven elements for 12, 17, 15, 12 and 10 (2) with
> reflectors for 20 and 17 and trapped directors for 10, 15 and 20.
> Element spacing is nowhere near optimum and, other than the DE,
> any 12 meter performance is nearly accidental.
>
> If someone found that the C3 (2 el on each band) outperformed it, I
>> would be very suspicious that something was wrong with the sample
>> tested.
>>
> You are welcome to argue with K7LXC/N0AX but their testing protocol
> is well documented and they do not indicate any abnormal behavior
> in the tested TH11 where they do note issues with other antennas.
>
> 73,
>
>    ... Joe, W4TV
>
>
>
> On 5/21/2017 12:45 AM, Vic Rosenthal wrote:
>
>> The TH11DXX that G3TXQ compares to the Hexbeam has at least 3 elements on
>> each band and is a modern design, no traps. If someone found that the C3 (2
>> el on each band) outperformed it, I would be very suspicious that something
>> was wrong with the sample tested.
>> I did look at the wrong picture and you are correct that the XR5 is 9
>> elements.
>>
>> Vic 4X6GP
>>
>> On 20 May 2017, at 23:28, Joe Subich, W4TV <lists at subich.com> wrote:
>>>
>>>
>>> Why do you think it will "significantly outperform the hex beams?"
>>>>
>>>
>>> Based on the performance data (K7LXC/N0AX) for the original Force 12
>>> C3 and TH11 with comparisons of the broadband Hexbeam and the TH11.
>>> The K7LXC/N0AX field data shows the C3 outperforming the TH11 while
>>> G3TXQ's web page <http://www.karinya.net/g3txq/hexbeam/broadband/>
>>> shows the TH11 with approximately 3 dB advantage over the broadband
>>> hexbeam.
>>>
>>> I wouldn't say an 11 element yagi with capacity hats on the elements
>>>> has an especially low visual profile!
>>>>
>>>
>>> Neither the XR5 nor the Navassa 5 has 11 elements *or* capacity hats.
>>> The XR5 is a 9-element antenna and the Navassa 5 has 10 elements as
>>> documented in the two links I provided.
>>>
>>> 73,
>>>
>>>    ... Joe, W4TV
>>>
>>>
>>> On 5/20/2017 3:34 PM, Vic Rosenthal wrote:
>>>> Why do you think it will "significantly outperform the hex beams?"
>>>> The point about uv is well taken re fiberglass, but I don't know what
>>>> the cords on all the hexbeam versions are made of. There are uv resistant
>>>> materials available.
>>>> I wouldn't say an 11 element yagi with capacity hats on the elements
>>>> has an especially low visual profile!
>>>>
>>>> Vic 4X6GP
>>>>
>>>> On 20 May 2017, at 19:36, Joe Subich, W4TV <lists at subich.com> wrote:
>>>>>
>>>>> On 5/20/2017 11:32 AM, Terry Brown wrote:
>>>>>
>>>>>> These beams are not cheap,  I don't want to be taking the beam down
>>>>>> and replacing main structural components every 5 yrs.
>>>>>>
>>>>>> Can anyone with a hex beam comment on this?
>>>>>>
>>>>>
>>>>> Your concerns are well placed with antennas made of fiberglass and
>>>>> dacron/kevlar cords.
>>>>>
>>>>> Instead of a hexbeam, I would recommend looking at the Innovantennas
>>>>> XR5T: <http://innovantennas.com/antennas-a-accesories/on-line-shop
>>>>> /view/productdetails/virtuemart_product_id/435/virtuemart_
>>>>> category_id/55.html>,
>>>>> or the JK Antennas Navassa 5:
>>>>> <https://jkantennas.com/jk-navassa-5.html>
>>>>>
>>>>> Both have boom lengths of 12 feet or less, cover 20 - 10 meters and
>>>>> have optional 6 meter add-ons.  Either should significantly out
>>>>> perform the hex beams and - since they are aluminum antennas that do
>>>>> not use UV sensitive fiberglass, kevlar and dacron components - should
>>>>> significantly outlast the hexbeam with significantly less maintenance.
>>>>>
>>>>> 73,
>>>>>
>>>>>   ... Joe, W4TV
>>>>>
>>>>>>
>>>>>>
>>>>
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-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."