typeface for 'radical software'!

i really need to know what the typeface used for 'radical software' is...please help!!


1970, the era of photo-composition lettering. The closest available design is from Letraset, Compacta Bold Outline, designed by Fred Lambert for Letraset in 1963-5:

It has been published by Eisner + Flake as Compacta Bold Outline OT.
There was also a Compacta Outline which was slightly narrower & with lighter lines. AFAIK no digital version, but I stand to be informed.

brilliant-thank you!

You're welcome.