[Boatanchors] Tube prices

[doc]

Dave Brown wrote:
> Usually explained by noting the AF data is for a pair of tubes but the 
> RF data is for just one.
> The devil is in the details!

Even so ... is the tube circuit "tamed" for RF
vs AF due to fears of oscillation?

A pair of 211's in the AF application
7.5W IN = 200W OUT is still far more efficient
than a single 211 in an RF application -- which
may be seen by extrapolating the data:

10W IN = 80W OUT (pair of tubes, 40W x 2 = 80W).

I am likely broadcasting my ignorance here but
I would still appreciate learning why the massive
difference in performance given that both are
Class B.


-- 
Thanks! & 73, doc kd4e  http://bibleseven.com
Ham Links: http://bibleseven.com/hl.html