[Johnson] Viking Valiant Modulation

[Paul Baldock]

At 11:09 AM 8/13/05 +0000, dsmaples at comcast.net wrote:
>Significantly oversizing the bypass and coupling caps and replacing the 
>driver transformer with one from AES got me pretty good frequency response 
>down to 100 Hz (I swept it with an audio generator and scope on the 
>modulator grids).

The audio signal is reasonably distortion free at the grids, but not at the 
anodes of the modulator or in the modulated output. That's why I suspect 
the modulation transformer.

Do you know if anybody make a replacement for the modulation transformer?

Paul