Re: [AMRadio] info wanted on 4-400 linear amplifier

[Patrick Jankowiak]

The Thunderbolt was easily driven to full input by 20 watts. I 
recall it was easy to tune and very sensitive due to grid drive. 
The grid was swamped as I recall, so it was also very stable.

PJ
--
the Johnson Thunderbolt is a AB2  amp that uses 4-400A's check 
out this amp
i think you might like the layout it uses a roller inductor 
instead of a
varicap.
73 Tony wa4jqs