[amsat-bb] Re: Question adding RHCP to Cheap Yagi

[Curt Nixon]

Hi Greg:

Yes it would..These will use the physical offset fed without the delay 
section.  My problem was getting my arms around the polarity 
direction--RH or LH.  I have it figured out now so I'm finishing up the 
assembly.

Thanks
Curt




Greg D. wrote:
> Hi Curt,
>
> For CP you would either have the elements offset and feed them 
> in-phase, or have them not offset and feed them with the phase delay.  
> You want to create a spin to the wave as it travels down the boom.  I 
> expect doing both would make a mess out of things.
>
> Greg  KO6TH
>
>
> > Date: Fri, 2 Jan 2009 10:19:23 -0500
> > From: cptcurt at flash.net
> > To: amsat-bb at amsat.org
> > Subject: [amsat-bb] Question adding RHCP to Cheap Yagi
> >
> > Good Morning All:
> >
> > I've been using a 10el version of Kent Britain's Cheap yagi for my 70cm
> > downlink antenna. It suffers from deep fades so I am going to add the
> > second yagi with physical offset to get to RHCP in the x config.
> >
> > Question is:
> >
> > normally I would reverse the coax connections to a dipole driver but
> > this is a hairpin (half of a folded dipole. )
> >
> > Do I reverse the connections as normal? Kents instructions just say
> > offset the elements and feed in phase.
> >
> > Thanks
> >
> > Curt
> > KU8L
> >
> >
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