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Re: [TowerTalk] RG-58 capacitor

To: towertalk@contesting.com
Subject: Re: [TowerTalk] RG-58 capacitor
From: jimlux <jimlux@earthlink.net>
Date: Sun, 25 Jun 2017 21:19:32 -0700
List-post: <mailto:towertalk@contesting.com>
On 6/25/17 4:20 PM, David Robbins wrote:
Yes, rg58 should be about 40pf/ft.  just beware, if the length becomes a
significant fraction of a wavelength then you have to calculate the
impedance based on the length and velocity factor.


My table said 25 pF/ft.  RG-8/rg-213 is 13pF/ft


So, moral of the story is, check for the brand of your coax, and use the appropriate length.

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