[Milsurplus] AN/SRT-4A Marine Transmitter

[Richard]

The triode connected 6L6 has an amplification factor of 8, the same as 
the 801A, and is good up to 500 volts.  You need a dropping resistor for 
the heater.  I put one in my MF TBW, substituting for the 801A, and 
performance was identical.

Richard, AA1P


On 08/16/2018 05:10 PM, Bruce Gentry wrote:
>
> 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
>>