[TowerTalk] add a 3rd el to 40-2cd

[W0MU Mike Fatchett]

I think you would be much better off converting it to a Moxon.  I agree 
with KK9A.

The boom is too short and not substantial enough that I would want to 
lengthen it.



On 3/6/2018 2:57 PM, john at kk9a.com wrote:
> I have OptiBeam 40m antennas and when playing with a model, adding an
> element really did very little. I do not recall the details but I think
> some things like SWR bandwidth were even worse. You are probably better
> off using the aluminum to make a Moxon
>
> John KK9A
>
>
>
> From:	kostas sv1dpi
>
> In my club we have a Cushcraft 40-2cd antenna. We are very satisfied with
> this antenna. Recently, one of our members, donated us a second 40-2cd. We
> have not a tall tower to put them in phase (the antenna now is at
> 22m-72ft). We made a thought to shrink a little the reflector of the 2nd
> antenna and use it as director in a 3el configuration. Do you think that
> it will work? Can anyone to make a model and tell me what is the new
> length of the boom and in what position we need to put the elements to
> have 50 Ohms and finally which is the gain?
>
> On behalf of SZ1A
>
> 73 Kostas SV1DPI
>
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