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Re: [TowerTalk] Stub effectiveness

To: Tom Osborne <w7why@frontier.com>, towertalk@contesting.com
Subject: Re: [TowerTalk] Stub effectiveness
From: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Tue, 06 May 2014 19:42:14 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
If you want high performance, replace the coaxial stub
with a coil and sufficiently rated capacitor.  It will
have much higher Q.  A coaxial stub makes a low quality
rugged filter.

Rick N6Rk

On 5/6/2014 4:55 PM, Tom Osborne wrote:
Hi All

What determines the quality of a coax bandpass stub?  I found about half
a spool of RG-6 at the local Goodwill store here and it seems like it is
pretty good coax.

It has a triple shield - foil on the dielectric, shield, and another
foil shield on the outside, over the braid.  Would this make good stub
material?  Thanks and 73
Tom W7WHY


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