On Tue, 8 Nov 2005 13:23:46 -0500, "Fred W4JLE"
wrote:

I choose a ladderline length to always feed the antenna at a current node.


I don't know what this really means, and how it is relevant to the
discussion that the ROT in question doesn't hold true for longer feed
line lengths.

You have previously dismissed 100m of feed line with the eloquent
"sucks" comment, whatever that means.

What has feeding an antenna at the current node got to do with feed
line length? Is it intended to imply that feed line length or the ROT
are not relevant when you feed the antenna at a current node?

Is it just a trite comment to consume bandwidth?

Owen

"Owen Duffy" wrote in message
.. .
On Mon, 7 Nov 2005 22:21:35 -0500, "Fred W4JLE"
wrote:

How many hams find a feedline length of 100 Meters acceptable? Lets look
at
a more realistic length of 100 feet and the loss is less than 2 dB at 30
Mhz. The loss is much less on the lower bands. With all due respect, your
example sucks!

BTW, I make your example 2.7dB, not less than 2dB. (Perhaps you labour
under the misaprehension that loss per unit length is a constant in
this situation).

Fred, what you have highlighted is the unstated assumption of some
limit on length. You know enough to choose a length so that the ROT is
true, but does a learner soaking this up know as much?

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