Hi Jason,
I think what Costas was getting at is that the 6L6 was the grand daddy of
all beam power tetrodes including the 807, 6146 etc. Yes the 807 has higher
voltage and frequency rating than the 6L6 but both valves share a common
architecture.
--
73 Warren K2ORS/WD2XGJ
FN42hi
http://www.w4dex.com/wd2xgj.htm
-------------- Original message ----------------------
From: "John RABSON" <[email protected]>
> >Yes, the 807 is more-or-less an 6L6 with different
> >connections.
> >
> >Costas SV1XV
>
> I'm not sure I agree with this. My Wireless World valve data book from the
> late
> 1950s describes the 6L6 as an (audio) output beam tetrode rated for 300V on
> the
> anode, 200V on the screen, and delivering about 6W output.
>
> The same book quotes the 807 as accepting up to 600V on the anode, 250V on
> the
> screen and being able to deliver up to 40W RF at up to 60MHz.
>
> I recall reading in the RSGB Bulletin of old-timer who ran 110W to a single
> 807
> using on-off keying and with 1kV on the anode. He said the important thing
> was
> to keep the screen dissipation low. I am not sure a 6L6 would do as well.
>
> 73,
> John G3PAI
>
>
>
>
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