[Amps] Drake L-4B fan - too small and too slow?

[John]

"R. Measures" <r at somis.org> wrote:     
On Dec 30, 2005, at 6:16 PM, John wrote:

> Hi Jason
> My L4 used Amperex 3-500Z tubes. When used at the power level in 
> the drake manual and the Drake tune up procedure, did not show any 
> color except at long key down at I kw input. The manual said they are 
> not to show color.

Does Amperex know this?

Not interested in smart ass off the list replies.
   
  john kb9tc