Steve:
As long as you keep the middle 20 feet (10' on either side of the center
feed point) in a straight line for cancellation purposes, you can put the
remainder in the shape of a V or bend as necessary.
73,
Jack
-----Original Message-----
From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
On Behalf Of Steven Raas
Sent: Thursday, December 08, 2011 10:59 PM
To: Guy Olinger K2AV
Cc: Mike Waters; topband
Subject: Re: Topband: K2AV 160m Folded Counterpoise Antenna - New
DetailsPosted
Im currently one of those ' Limited Space 160 Ops' .. @ moment im using an
'Inv L' to use the term loosley. ( Diagram Attached )
I am really thinking about trying one of these FCP's.. altho it would take
some considerable work removing whats already in place.. but no big deal.
My question is this.. the actuall FCP Element(s) can they be aranged so
that from the Feed Point they would look like an extreemley wide 'V' and
not straight? ( Instead of 180 deg to one another .. say mabey 130 deg)
Also.. would near buy house(s) hinder their tuning / Operation @ published
lengths?
If I was to install one here.. to keep my current feed point position where
it is ( best for vertical rise in my case ) .. the Feed would be @ corner
of house.. with 33' of the FCP in the back yard in the clear @ 8-10' up..
and the other 1/2 (33' ) of the FCP running alongside my house.. @ 8-10' up.
-Steve Raas
N2JDQ
On Thu, Dec 8, 2011 at 10:46 PM, Guy Olinger K2AV
<olinger@bellsouth.net>wrote:
> Just a word on ferrite beads, and other kinds of baluns. Trust us, if it
> could be done wrong, we blew it, if it could burn, we burned it, if it
> could be cracked, we shattered it, if it couldn't stand up to 1.5 kw, we
> smoked it. We tried every possible short cut and cheep trick imaginable.
> Anything except winding a special transformer that we couldn't buy
> ready-made off a shelf somewhere. We got where we got because ultimately
> only a rugged isolation transformer would get it done.
>
> We are NOT opposed to your verifying our experience in that regard, by
> starting with beads and working your way up. Get in a supply of
> tranquilizers before you start. Only do one better than we did, take
> pictures/video of the carnage for the entertainment of the masses.
>
> The specific construction of the transformer stands up to brick-on-key 1.5
> kw and runs cold. There is a reason for the low mu powdered iron choice.
>
> 73, Guy.
>
> On Thu, Dec 8, 2011 at 10:27 PM, Mike Waters <mikewate@gmail.com> wrote:
>
> > On Thu, Dec 8, 2011 at 7:21 PM, W0UCE <w0uce@nc.rr.com> wrote:
> >
> > > * The ONLY means of achieving the required degree of Isolation
is
> > to
> > > use the Isolation Transformer as specified by K2AV
> > >
> >
> > I was thinking of sliding a whole bunch of ferrite beads over the coax
> > feedline right at the end. But I'll take your word for it.
> >
> > This is all very interesting. I'd sure like to try Guy's invention
> myself.
> >
> > 73, Mike
> > www.w0btu.com
> > _______________________________________________
> > UR RST IS ... ... ..9 QSB QSB - hw? BK
> >
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|