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Re: [TowerTalk] Best Balun

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Best Balun
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Wed, 26 Nov 2014 19:43:03 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>


> What if you had 50K feet of coax? ;)

You're feeding a dummy load - it won't matter.  With RG-8/RG-213
having ~ 1dB/100 ft at 30 MHz, the feedline alone has 500 dB(!)
loss.

73,

   ... Joe, W4TV


On 2014-11-26 6:35 PM, Charlie Gallo wrote:

On 11/26/2014 Steve Hunt wrote:

<snip> Any length of
wire a multiple of a half-wave long and earthed at one end will exhibit
a *low* impedance at the other end!

Steve,
Change  that to any REASONABLE length, I'll agree, but what happens if
the  length is long enough that R becomes dominant?  I mean, say RG-8,
the reistance of the center conductor is about 1 Ohm/1000 ft.  What if
you had 50K feet of coax? ;)

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