You may already know this - C25 inject the BFO oscillations. It is a simple
wire wrapped around an detector wire. You can see C25 in this schematic:
http://www.nostalgiaair.org/PagesByM...2/M0008862.pdf

I do remember finding a strange wire on the S-38 that I recently restored.
It killed band 2. I compared the actual circuit to the schematic and put it
back to the schematic. You can read about it starting at the third
paragraph he http://www.ppinyot.com/H/s-38.htm

Not documented on the web page, I later ran into "Silver Mica Disease". I
took apart the IF cans and added external caps.

Other than that I do not know.
Good Luck,
Paul P.

"Radio" wrote in message
...
.. I have had an S-38 on the shelf for a few years and finally got
around to recapping it this weekend. All went well and it does play
but not as well as I figure it should. I did find one loose wire that
is attached to S1B terminal “O” and goes nowhere. There is another
lead attached to that same terminal which goes to the antenna terminal
lug 4. I don’t see this extra lead on the circuit diagram and it does
appear to be a lead that was there when the rig was built. It look
like a cream colored lead with red stripes. I wonder if anyone has
any idea where this lead is supposed to go? I