[Amps] coaxial stub on amplifier output

[Stein Roar LA6FJA-K3RAG]

W2VJN's book have this !

73 LA6FJA Rag


> From: John Lyles [jtml at losalamos.com]
> Sent: 2010-03-30 05:28:24 MEST
> To: amps at contesting.com
> 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
> K5PRO
> John
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