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
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