[Boatanchors] "Sweep Tube" That Can Handle 1 KV on Plate?

[Bill Cromwell]

On 10/21/2013 08:54 PM, David Stinson wrote:
> Is there such a thing as a sweep tube that can handle 1000 Volts
> on the plate?   Best if it has 10 to 14 Volt filament, but will work
> with other voltages.
>
> 73 DE Dave AB5S
>
Hi,

The "Novice Quarter Gallon" transmitter is in the 1981 ARRL Handbook. 
They are somewhat vague about the final plate voltage but they use 
filter caps setup to handle 1300 volts as a 'safety margin' and suggest 
that TV transformers with 600 volts AC to 700 VAC (or so) may be used 
with the full wave bridge specified. That's gonna get darn close to a KV.

The 250 watts is input power as that's how it was specified in the FCC 
rules for the Novice band at the time. And the tubes are 6KD6. Sweepers 
from big honkin' televisions.

73,

Bill  KU8H