"John Smith" wrote in message
...
yes, you will forgive me if I skip reading all of that, I doubt you
offered anything relevant to the mans original question anyway...

Yeah, don't confuse us with theory and engineering- especially stay away
from any math.

But to Len,
Thanks for the informative post. I have used 2C39's on 23cM in 2 and 4 tube
water cooled designs for EME, but appreciate your insight into the
construction and caveats.

Dale W4OP