[TenTec] "Radiates like Crazy"???? No
Bill Rowlett
kc4atu at hotmail.com
Fri Jul 8 15:33:13 EDT 2005
No he is not wrong. I have had more problems with TVI when using coax. NEVER
with ladder line or 300ohm twin lead.
kc4atu
>From: Curt <k3ey at yahoo.com>
>Reply-To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
>To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
>Subject: Re: [TenTec] "Radiates like Crazy"???? No
>Date: Fri, 8 Jul 2005 11:44:51 -0700 (PDT)
>
>I don't care if you do or don't...you're
>wrong!!!!!!!!!!
>
>--- Stuart Rohre <rohre at arlut.utexas.edu> wrote:
>
> > I must respectfully disagree that ladder line
> > "radiates like crazy".
> >
> > It is BALANCED line, that means if it is fed from a
> > balanced source and goes
> > to a balanced antenna, the currents are equal and
> > opposite in each wire and
> > their fields cancel within a few diameters of the
> > line. See the theory of
> > transmission lines in the ARRL Handbooks.
> >
> > It should cross conductors at right angles, and
> > should be twisted every 18
> > inches or so, to minimize effects from nearby
> > conductors that could
> > unbalance it.
> >
> > If you ever have ladder line "radiating" you are mis
> > applying it in some way
> > at one end or the other. Balanced antennas are
> > center fed beams, dipoles,
> > etc. with line brought off at 90 degrees to the
> > antenna wires.
> >
> > Let's bury these old wive's tales about balanced
> > parallel transmission
> > lines.
> >
> > Stuart
> > K5KVH
> >
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
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