[amsat-bb] Cross yagi question

[Burns Fisher]

I'm not an antenna designer, but I can tell you that the M2 LEO Pack
crossed yagi elements go through the center of the boom (i.e. across the
radius) and are insulated from it.  They don't contact each other because
they are offset from one another along the length of the boom. Of course
the phasing lines have to be adjusted to deal with the elements being
offset.

Is that what you mean?

73,

Burns WB1FJ

On Tue, Jan 15, 2019 at 8:16 AM Hans BX2ABT <hans.bx2abt at msa.hinet.net>
wrote:

> I'm sorry, but I wasn't complete in my description: I'm talking about
> yagis with the elements completely isolated from the boom with saddles
> (clamps) mounted on the boom to hold the elements in place. Much like
> the original LFA yagis are build. For an image go to my blog at
> bx2abt.com. --Hans
>
>
> On 01/15/2019 03:12 PM, Hans BX2ABT wrote:
> > Should the elements of a RHCP cross yagi be centered at the boom, or
> > should they be off center so that the middle of the H and V elements
> > cross each other in the middle? My gut feeling says off center, but
> > I'm not sure. I wonder how this influences the SWR. Cheers,
> >
> > Hans
> >
> > BX2ABT
> >
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> _______________________________________________
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> AMSAT-NA.
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