BiQuad antenna question

[Rastislav Galia]

gary  wrote / napísal(a):
> It would help to have the link to the antenna design.
>
> I'm going to upload a photo tonight of a biquad I built that is a bit 
> easier to build than most of the designs on the net. Basically, all I 
> did was use round loop at 3x the wavelength rather than squares that are 
> a wavelength on each side.
>
> IMHO, you need to build these antennas using a connector on the back, 
> not coax. This is because you need a rigid "pipe" on the antenna to feed 
> the loops.
>
> This is the "proper" biquad design in that is uses a coax feed to the loop:
> http://martybugs.net/wireless/biquad/
> Mine is similar except I use a N female to N female adapter with one of 
> the N connectors hacksawed off as the basic feed. This bypasses the 
> copper pipe deal. And as I stated earlier, it uses loops instead of squares.
>   

Hi Gary

thank you for your answer. Yes, martybugs' desing was the one I was 
refering to. My idea is to use coax like 2 meters long, insert it into 
martybugs' copper pipe concept. That would make it as rigid as 
martybugs' 40 centimeter long coax terminated by N connector. As far as 
I understood you, your "rigid pipe" concerns were of mechanical 
durability nature, whereas my question was rather about highfrequency 
impedantial properties of N connector. In the other words, is it 
neccessary to use N connector under the assumption that I would make my 
long coax rigidly fixed (for example using the copper pipe) ?

-Rasto