Need DX--40 Expert

[Ron]

I am in the process of doing a restoration on a DX-40 and I have come across
two variations of the wiring schematic.  I wonder which is the most recent
version.  Hope someone on this list can answer this for me.

The differences are as follows:

Schematic #1:  12AX7 Speech Amp plate supply line---has a 0.1mfd cap to
ground
Shcematic #2:  12AX7 Speech Amp plate supply line-- has a 20mfd 450V
electrolytic to ground.

Schematic #1:  6DE7 Modulator Tube--Pin 9 Cathode--10K 5W Resistor in
parallel with .5mfd cap to pin 2 of function switch.
Schematic #2:  6DE7 Modulator Tube--Pin 9 Cathode--12K 5W Resistor in
parallel with 2mfd cap to pin 2 of function switch.

There are some other minor suttle differences in the schematics but the
above two are the major differences.  Anybody know which schematic, 1 or 2,
is the most recent?

Thanks,

Ron,  AB5WG

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