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

[Bill]

With one antenna at 72 ft why not just add new antenna lower on the tower>?



On 3/6/2018 7:45 PM, W0MU Mike Fatchett wrote:
> 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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