[Amps] QEX Innovative Tube Linear?

[Joe Subich, W4TV]

Will writes: 

> Now, the EL519 is about all that's available at about $15 US 
> each. A quantity of about 10-12 would be needed to equal the 
> output of the 8 8908's since their output is not as great. For 
> 10 though, that would be $150 in tubes unless you could find 
> a vendor to sell them cheaper.

Why would you bother with sweep tubes?  With the 811A at $16 
(RF Parts) you're in the same price range for a more rugged 
tube.  Four 572B tubes will provide nearly 1500 W PEP in the 
same price range ($43 each / $180 for a "matched quad").

73, 

   ... Joe, W4TV