[Amps] Tetrodes

[Steve Thompson]

Dan K9ZF wrote:
> Michael J. Tubby G8TIC wrote:
> 
> 
>>I'm talking of 25+ years ago here... a UK design known as the "plumber's 
>>delight"
>>which was basically a push-pull pair much like the W1SL except the anode 
>>design
>>was in 2" copper tube....
>>
> 
> That sounds interesting.  I'm familiar with the W1SL, is this 
> "variation" written up anywhere? If it's been published or on the web I 
> would like to see it.
I have three articles that match Mike's description:
One was in the ARRL handbook, probably around the early 70s, 
another in 60s/70s versions of the RSGB VHF/UHF manual, and 
a third from Short Wave Magazine in 1973. I'll gladly scan 
them for anyone interested.

I also had great success with the  W2GN 'stripline kilowatt' 
design, which had the tubes in parallel.

Steve