[Antennas] Delta Loop spacing

Don Havlicek n8de at thepoint.net
Sun Feb 6 11:10:46 EST 2005


I believe you have answered your own question.
All my experience with 3-element quads [and yagis] is that spacings are 
usually equal or the reflector spacing is less than the director spacing.
You might ask the 'modelling gurus' for assistance with this one, though 
I believe you might have the director length incorrectly measured, also.
Good luck
Don
N8DE
Stefan Leippert wrote:
> Hello !
> I have build a 3 element Delta Loop for 28 Mhz.
>> The 2 element-version worked fine, since there is the 3rd element on, I have
> a terrible SWR. 
>> Spaces: Reflector --> Driven Element = 2 mtr.
> Driven Element --> Director = 1 mtr.
>> as written in Rothammels book.
>> I saw on different yagi construction plans other spacings, there the driven
> element is much closer to the reflector than to the director. 
>> When I mount the 3rd element (director) the SWR is very high, and there is a
> loss in recieving with about 1,5 S-Units. 
>> Any ideas ?
>> Thank you in advance !
>> Stefan, DF3TQ
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