[Amps] RE: 4CX800A Grounded Grid

[2@vc.net (Rich)]

>Hello Bill:
>
>The circuit will work only for tetrodes that have screens and control grids
>that can dissipate a large amount of power (many watts).  Thus, the 4-400
>and 4-1000 will work fine in grounded grid.  
>
>None of the ceramic tubes will do this (Maybe a 4CX10000 will).  

**  it will. A pair of 3-500Zs will drive one to c. 18 out with a 9kV 
anode supply.

>...

-  Rich..., 805.386.3734, www.vcnet.com/measures.