[R-390] R 392 T-602 bfo

[Dan Merz]

Hi,  I am puzzling over the three connections to the bfo unit out of an
R-392 receiver,  T-602  type 70J-2.  Looking at the connections end on,
the one first one starting at 9 oclock is the the number 1 connection
going to the grid capacitor and the bfo pitch capacitor,  but then I'm
not sure about the other two that are adjacent going clockwise.  I think
the next one is the cathode connection (called number 3 in the schematic
I have) and the most clockwise one is the ground connection (called
number 2) in the schematic I have.  The schematic is from
TM5820-334-35-13,  which is the only documentation I have in hand.  I've
looked at the pictorals in this manual but can't convince myself about
this conclusion from the appearance of the wiring because details aren't
that good.  I did some resistance measurements but without knowing how
the lower leg is wound (continuous with tap vs. additional coil wound on
top of first) I don't really know how to interpret the measurements.
Does anyone know the answer?  thanks,  Dan.