wrote:
Greetings:

We recently acquired materials from the estate of Roger A. Jacobsen,
K9KLN, which included a nice Quad 837 tube linear for 80m - 20m(?).
Please look at this amp at:

http://www.cybertheque.org/ham/837_linear/

I would appreciate any recollections about the design, chassis
layout, performance and similarities to other 807/1625 grounded-
grid designs.

Regards,

Michael Grigoni
Cybertheque Museum

As mentioned on the website, the linear is basicly the same as one that
appeared in the 1957 handbook and in early ARRL SSB manuals.
That version used modified 1625 tubes, the 837 is very similar to the
modified 1625 but with lower plate input ratings.