I found on the internet this no. 138 march 1968 "R.C.A.." brodacasting brouchure. Unfortenley, I don't rember the site from wich I picked it up.
https://www.dropbox.com/s/jste6bfxsp...8-com.pdf?dl=0
Enjoy it! It' extremly intresting. I love that old technology and it's a pitty that those things where destroyed. I'll study it more after I got rid of this nasty cold... (very nasty
).