JS, Looking at my 1959 Handbook, there's no project using 813's in a
modulator, per se. The high-power modulator in that issue uses 811A's.
The only project using an 813 is an amplifier, utilizing a single
tube. I'll check deeper in that year and see if I missed something
obvious and/or imbedded in the text on modulation/modulators.

de K3HVG

Jack Schmidling wrote:
Michael Black wrote:

And of course, the subject header didn't say it all, since there are
various
reasons someone might be looking for a given year's handbook, but not all
of those reasons actually require the specific year


But if I got that year, I would get what I want.

What I am actually looking for is the article or project on using 813's
as triode modulators. If that expands the editions, so be it.

js