"Richard Knoppow" wrote in message
...
On Apr 13, 6:40 pm, "Paul P" REMOVE paul @ REMOVE ppinyot .
REMOVEcom wrote:
I am restoring now aligning a S-38. Yep, all caps and resistors replaced
except the domino caps and tubes tested, bias voltages with in spec. I
gave
up the alignment for now. I am having trouble aligning the Band 2 at 5mc.
The oscillator just dose not want to go high enough. Perhaps a good
night's
sleep will help.

Questions:

1) What is the oscillator offset (add or subtract the IF freq 455) for the
four bands? Are any bands different from the others? Broadcast is just
fine at frequency plus IF (455).

2) Are the domino caps paper inside or mica? They are NOT Micamold. There
are three of four of them. I was going to replace them next and heat gun
the coils.

http://www.nostalgiaair.org/PagesByM...2/M0008862.pdf

Thanks,
Paul P

The postage stamp caps are mica but probably not silver mica.
If all the other frequencies come in the problem may be that
something has shifted in the band 2 oscillator coil. Most of these
coils have a couple of spaced turns to adjust the value. You will have
to juggle between the coil and the trimmer.
The S-38B LO is 455 khz above the signal frequency on all bands.\


Thanks Richard,

Yes the whole band is shifted. I will look at and chase the coils.

One point of clarification. So that would make 5 MHz look like 5.455MHz on
the oscilator?

Paul P.
KB3LZP