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Re: [Amps] coaxial stub on amplifier output

To: John Lyles <>, <>
Subject: Re: [Amps] coaxial stub on amplifier output
From: Stein Roar LA6FJA-K3RAG <>
Date: Tue, 30 Mar 2010 07:16:02 +0200 (MEST)
List-post: <">>
W2VJN's book have this !

73 LA6FJA Rag

> From: John Lyles []
> Sent: 2010-03-30 05:28:24 MEST
> To:
> Subject: [Amps] coaxial stub on amplifier output
> Has anyone seen anything in print about using a lambda/4 (Quarter 
> wavelength) stub on the output of an amplifier with a tube. Its a nice 
> way to bring water, tuning mechanisms into an output circuit, without 
> looking like a short circuit for the primary frequency. This same stub 
> is a half wavelength at second harmonic, so it reflects a short right 
> across the output at F2. This should cause some plate current waveform 
> modification, depending on where it is located physically with respect 
> to the plate, i.e., similar to Tyler circuits.
> 73
> John
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