[Hallicrafters] S 38-D Oscillation

[Brent Seres]

Hi Folks

I'm looking for some help retoring an S-38 D. I have re-capped the unit 
and performed the alignment as per the service manual. The radio seems 
to be working well except for 2 minor problems:

1) On weak signals (especially on the BCB, below about 1200 kHz), there 
is an oscillation, much like a weak BFO signal that goes to zero beat as 
I tune through the station The BFO is off, the IF is aligned, and poking 
and prodding at components does not seem to have a significant effect, 
such as changing changing the amplitude or frequency of the note.

2) The bandspread is somewhat wonky, difficult to tune in SSB. I realize 
this receiver was not designed for such things, but it seams easier to 
tune the signal with the main tuning rather than the bandpread. I have 
re-strung both the main and bandspread tuning as per the diagram, and 
lubricated the bearings in the capacitor as best I could, but there 
still seems to be a fair amount of backlash in the bandspread.

If I could solve both these problems, I could complete the project to my 
satisfaction.

Regards

Brent  VE3CUS