GC-1A Mohican

[Bob Krassa]

A few weeks ago there was some discussion of differences 
between the GC-1 and GC-1A.  I just noticed that in the 
manual for the XP-2 AC power supply, there is a drawing of 
the circuit boards for both models.  The difference is that 
on the GC-1A, R35 which is a 22K from the base of the audio 
driver transistor to the primary of the audio trf, is no 
longer connected to R38, R39 and the big filter cap, which 
are the B supply.  Even though the manual that I have, which 
I think is from BAMA, is marked for the GC-1A and dated 
10/27/61, those changes were not made in either the circuit 
description or the schematic. 

The drawings show that you can tell if you have a GC-1A 
because R22 is mounted at an angle instead of parallel to 
the long side of the circuit board.

So, I do not think I have ever seen an actual non-A model.

73 Bob Krassa AC0JL

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