[Milsurplus] AN/SRT-4A Marine Transmitter

[Bruce Gentry]

I believe beam power tubes derived from the British "Kinkless Tetrode" 
or KT-    family of tubes. The 807 is essentially a 6L6 with a plate 
cap, and the 6L6 was derived directly from the British design. The 
physical distance ratio between the cathode, grids, and plate, the 
alignment of the turns of the control and screen gris, as well as the 
shape and placement of the beam forming plates are part of the 
"formula".  All of this is devoted to linearity, inter-electrode 
capacitances are rarely of any concern in audio circuits. Does a tube 
with a sharp grid characteristic that "snaps" on and off do better as an 
oscillator or is a "gentle" and smooth characteristic  better?

         Bruce Gentry, KA2IVY


On 8/16/18 3:47 PM, AKLDGUY wrote:
> Interesting observations on beam tubes as oscillators. What about when 
> the screen is strapped to the plate, effectively turning it into a 
> triode? Or did you mean that too?
>
> Neil ZL1ANM
>
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