[Amps] 813 Amplifier Article

[Ron Youvan]

Fuqua, Bill L wrote:

> I have thought of replacing the 813's with 4E27A's. Has anyone used 4E27A's in grounded grid.
> They are pentodes with 125 watts plate dissipation and wire the filaments in series since they are 5V.
> They should have a nice plate glow to them and go in the same socket.

    http://www.tubecollector.org/4e27.htm

says the 4E27 has a 75 Watts plate dissipation.
   ???  I believe the 4E27 is more rare than 813s.
-- 
    Ron  KA4INM - Endless Loop: n.        see Loop, Endless.
                  Loop, Endless: n.       see Endless Loop.
                  -- Random Shack Data Processing Dictionary