With a good ground radial system (very important) here at K3LR - the
full size 4 square holds its own - almost 6 dB of gain over ground -
compared to a stack of W6NL Moxons (185 feet over 120 feet). The
vertical 4 square is a VERY good antenna for 40 meter DXing.
73
Tim K3LR
On 2019-02-26 22:54, Jeff Blaine wrote:
> Jim,
>
> The 4sq is a great antenna but the yagi beats the 4SQ almost all the time,
> and often by some to a lot of s-units when it comes specifically to raw
> signal strength. In some cases the difference is simply amazing.
>
> On the other hand the yagi won't change directions instantly and it won't
> provide an omni direction response. I often run with the stack on EU and
> then jump to the 4-sq if I get a caller that I can't make out from another
> direction because he's off the side or back. I was going to take down the
> 4sq but the ability to point in some other direction instantly is a real help
> especially in contesting.
>
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com [1]
>
> On 27-Feb-19 11:31 AM, Jim wrote: 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 [1]
>
> On 26-Feb-19 10:57 AM, john@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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