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[Amps] What are the drawbacks of using a tube running relatively low vol

Subject: [Amps] What are the drawbacks of using a tube running relatively low voltage and high current?
From: Roger <sub1@rogerhalstead.com>
Date: Wed, 06 Jan 2010 15:54:00 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
The Subject line pretty much says it all.
How does this negatively affect the components in a Pi-L network for say 
160 through 10, 6 meters, or say a strip line on two?
I'd think the same parameters would be present in running a pair of 
tubes in parallel.

How about input capacitance?  Given a tube with say over 100 pf input Vs 
one with 20 pf. Then there is the out put and transfer capacitance.

I've built quite a few amps in the past, but all were either building a 
design out of the handbook or a magazine, or a slight modification of 
one. Now I'm starting from scratch and would like to be ready to start 
bending metal when the tubes arrive.  I need to find a good cad program 
that will work with Fedora LINUX, or Windows.  As long as it works on 
one or the other is fine.

I used to teach a lot of this stuff, but it's been over 30 years.

73

Roger (K8RI)
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