[AMRadio] info wanted on 4-400 linear amplifier

Patrick Jankowiak recycler at swbell.net
Wed Aug 3 21:48:10 EDT 2005

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.


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
73 Tony wa4jqs

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