On Tue, 28 Mar 2017 04:15:37 -0700 (PDT), "
wrote:

XAM equipment of that vintage often (very nearly always) used germanium transistors - so be very careful of the part numbers.

Peter Wieck
Melrose Park, PA

Thats good to know. Thanks!

I was just reading recently that the earlier transistors were made with
germanium, but it is rare and thus costly so they changed to silicone.