[Amps] Alpha 86

[Glenn AE0Q]

"ETO's documentation of the Alpha 86 is sketchy at best.  The amp went
through several re-designs during its production lifecycle, most changes of
which are related to QSK performance and PIN diode protection."

THat is definitely true.  In290 (more or less) production 86 amps, there
were 4 versions of the Control Boards used.  The original 86 Manual has
schematics for the first version, diagrams for one of the next two exists,
and the final is documented.  But ETO never gave Alpha schematics for one
of the middle versions that have shown up at Alpha needing repairs over the
last 20 years or so.

Glenn AE0Q.