[AMRadio] Valiant and Loop progress


Barry Sherwood barry_sherwood at yahoo.com
Wed Dec 7 13:06:21 EST 2005


Well since your gonna need 100 ft towers for supports
why not configure it in a delta loop and use the tower
for one side of the loop, since your wishing and it is
Christmas time!

Barry, KF5GC

--- W5OMR/Geoff <w5omr at satx.rr.com> wrote:

> Barry Sherwood wrote:
> 
> >Yep Geoff used aluminum ground wire bought at rat
> >shack to wind the coil with. Probably cannot get
> that
> >at rat shack any more either!
> >  
> >
> >  
> >
> 
> I don't know if it's still available, but a couple
> of decades or so, 
> ago, my dad built up a 2-element VHF Quad, for DF
> work, out of aluminum 
> clothesline wire.
> 
> Probably somewhere in the neighborhood of 3/16" ~
> 1/4" diamater - 
> self-supporting... he use a couple of peices of
> plexi-glass for element 
> supports, and one end of the plexi for the
> feed-point.  Worked well.
> 
> Years later (about 3 ago, now) I used a 2-elemnt
> quad on 17m SSB, and 
> worked the world on it.  Not that I have ever been
> into hunting' DX, but 
> that quad would open the band, and put it to sleep
> and more often than 
> not, be one of the last stations heard from this
> area, with just 100w on 
> SSB.
> 
> I wish I had the room for a rotatable 2-element quad
> on 75m.
> 
> Failing the room to rotate, a remote coax switch on
> the reflector could 
> add/subtract lengths of line to change the direction
> of the f/b pattern.
> 
> lessee... 1005 / 3.9Mc = ~260' / 4 = ~ 65' per side.
>  There would have 
> to be a pair of  100' tall supports, with a bridle
> to hold up the  top 
> part of the elements, and spaced at about 65
> electrical degrees @ 3.9Mc 
> would put the towers at around 45 1/2' apart... 
> 
> hey, while I'm dreaming, why not have two of those
> setups?  one for the 
> East/Northeast and the other for the West/Northwest.
> ;-)
> 
> I'm rather centrally located here, in South Central
> Texas.
> 
> I did dream up a multi-band, 2-element phased Quad
> array.   I've never 
> had the opportunity to put it up and test it, but I
> think it'd work fine.
> 
> Tell me what you think
> w 5 o m r    d o t    s h a c k n e t   d o t   n u 
> slash  ~ w 5 o m 
> r    s l a s h    h a m s t u f f   s l a s h   Q u
> a d
> 
> w5omr.shacknet.nu/~w5omr/hamstuff/Quad
> 
> there's no www... just http://
> 
> ---
> 73 = Best Regards,
> -Geoff/W5OMR
> 
> 
> 
>
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