Hello Jeff.
28 Sep 97 07:00, Jeff Edmonson wrote to Roy Witt:
 >>  JE> The one I saw (my dad built) had a total of maybe 10 elements
 >>  JE> on it? 2 quad, and 6 yagi?  I can't remember... Damned CRS
 >>  JE> anyway 
 JE>
 >> If I remember, mine only had 4 directors instead of 5.
 >> Still had more than you dads' though.
 JE>
 JE> Roy?
 JE>
 JE> There were 10 elements.  One quad DE, one quad reflector, and 8
 JE> directors.
 JE>
 JE> You had *more* with only *4* directors?
Yup...there were two antennas in a stacked array...gotta read the whole 
message, Jeff..12 elements in all...
 JE> More what?
Elements.
 >>  JE> Sounds about the right time-frame.  It was included in the
 >>  JE> ARRL Handbook in either '78 or '79... carried there for about
 >>  JE> 4 or 5 years, and then dropped out, for whatever reason.
 JE>
 >> Probably got moved to the Antenna book.
 JE>
 JE> I've not seen a current version of -that- publication in a while!
Then, unless someone has plans or can come up with the handbook with them in 
it, all is lost.
 >>  JE> What did you use for a phasing stub?
 JE>
 >> According to Wayne Overbeck, the inventor, you lose to
 >> much RF in a phasing stub.  He fed his direct with RG8
 >> or 213.  Since I stacked mine, I used RG11 as a
 >> stacking harness and fed that with RG8.
 JE>
 JE> How far were they spaced, half wave?
No.  That's too close.  I think it was at an un-even multiple of 1/4 waves..
I wasn't too scientific in those days.
 JE> Got the formula for figuring up phasing lines for V/UHF "stacked"
 JE> antennas?
Uh huh...You can make the phasing line as long as you want to make up the 
distance required to reach both antennas.  Provided, you use 5904/FMHz x the 
Velocity Factor of the coax you're using.  This gives you a 1/2 wavelength at 
the frequency you're designing your stacked array around.  Any odd multiple 
of the 1/2 wavelength per side will give you good phasing...Oh, and don't 
forget to use 75 ohm coax for the harness.
I've got a stacked pair of UHF 6 element Yagi's I built from a commercial 
computer program called Yagi Optimizer.  I want to build two stacking 
harnesses and experiment with feeding the yagi's out of phase and in phase.  
First, I need to make room for them.
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