[Amps] AL-1200 MO' Powah

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Thu, 2 Jul 2009 16:58:03 -0400, "Tony Brock-Fisher" <barockteer at aol.com>
wrote:

>
>I added a ninth filter capacitor and bleeder, same as the originals, in series to up the filter cap bank voltage rating to 4050V. Then I set the input side of the transmformer on the low voltage tap. It now runs 3750V no load, 3300V full load. Puts out full 1500W with 100W drive. Has lasted thru several contests that way as well.

REPLY:

Very good. Nearly all triodes have higher gain with higher anode voltage. 

Above a minimum V, tetrodes and pentodes generally do not, as the curves show. 

73, Bill W6WRT