[Amps] AL-1200 MO' Powah

[Tony Brock-Fisher]

Incidentally, if you look up the old thread, you'll see that my original question was how to get closer to legal limit out of my AL-1200 with 100W drive. I think the problem was that my Peter Dahl transformer was miswound, same as the one in the original QST review, and only made 3300V no load.

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.

-Tony, K1KP