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[AMPS] Load capacitor question.

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Subject: [AMPS] Load capacitor question.
From: (engelenj)
Date: Tue, 21 Aug 2001 22:28:02 +0200

How should i build the 50ohm output line on my amplifier. I've used this
formula :
Z0=138/e-½ log D/d
when i calculate it for air and with a tube of 20mm inner diameter i get a
diameter of 8.7mm for the conductor. But is 'air' the way to go ? should i
use teflon ? what is the dielectric constant of it ?
i think it's 2 but i'm not shure .

thanx for any help.
 ON1DSE, jan

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