[TowerTalk] JK 402 versus CC XM-240

[Jim]

WOW Jeff! There's a lot of info there! Interesting how well the 4 square 
works compared to the Yagi.



Thanks for posting!



Thanks
73
Jim W7RY

On 2/26/2019 7:48 PM, Jeff Blaine wrote:
> Picking the "best" 40m beam is very hard on 40m and requires a 
> compromise unless you have a big tower, a big rotor, moderate wind/ice 
> exposure, height limitations and CW/SSB only vs. wideband CW+SSB.   
> Oh, and a serious budget of course.  That's why there are so many 
> different designs in the market.
>
> A bit of the decision process for both the beam type selection and 
> suppler may be found here for those interested:
>
> https://ac0c.com/main/page_acc_towersantennas_40m_stack.html
>
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com
>
> On 26-Feb-19 10:57 AM, john at kk9a.com wrote:
>> Momobeam makes a T element 40m beam also, I used one last year 
>> operating as
>> PJ4R.  I have modeled a lot of 40m beams and it is hard to get a lot 
>> of gain
>> with a single antenna. The Moxon is a nice design but it does not defy
>> physics.
>>
>> John KK9A
>>
>>
>>
>> Grant Saviers KZ1W wrote:
>> All true, Jim.
>>
>> As well, re W6NL's design of the 40m Moxon being discussed.  I built/own
>> two.  Also NEC4 verified.  K3LR and 8P5A use them.  The JK Moxon looks
>> like a close derivative.
>>
>> Grant KZ1W
>>
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