[Amps] coaxial stub on amplifier output

[TexasRF at aol.com]

I will display some ignorance here:
 
Does the plate current waveform distortion cause any problem at the  
fundamental frequency?
 
Your idea for using a quarter wave stub like that is interesting. For a  
single band amplifier, it could replace the rf choke for B+ and avoid all 
those  pesky resonance problems. Of coarse the plate blocking C would need to be 
 removed and used to connect the plate load C (in a pinet) to the output to 
keep  the B+ off the load C.
 
73,
Gerald K5GW
 
 
 
 
 
 
In a message dated 3/29/2010 10:29:13 P.M. Central Daylight Time,  
jtml at losalamos.com writes:

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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