Curt:
Prove it!
Bob, K4TAX
----- Original Message -----
From: "Curt" <k3ey@yahoo.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Friday, July 08, 2005 1:44 PM
Subject: Re: [TenTec] "Radiates like Crazy"???? No
I don't care if you do or don't...you're
wrong!!!!!!!!!!
--- Stuart Rohre <rohre@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
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