Michael Holley wrote:
have been adding to my magazine scans. I found a
decade counter
circuit implemented with four 12AU7 tubes (dual triodes) in the October
1955 Radio & Television News. (50 year rule.)
http://www.swtpc.com/mholley/ElectronicsWorld/Oct1955/RTVN_Oct1955.htm
.
Grumble Grumble Grumble $#!@ jpgs ...
How do you read um page 64 and 66 ???