[R-390] Strange modulation on carriers

[DJED1 at aol.com]

I finished tweaking all the adjustments on my newly recapped IF stage and  
started checking on the PTO runout.  When I would tune through the  calibrator 
signal with BFO off I get a modulation, which varies somewhat with  where in 
the passband I tune.  It's there for all bandwidths, and I'm not  sure if it was 
there before I took the IF module out.  Strangely, it occurs  on all the 
bands below 8 MHz, but not above.  I assume it's modulation of  the 17 MHz 
oscillator, and will check it out when I remove the RF module for  recap.  Has anyone 
seen a symptom like this?  Any suggestions for  troubleshooting it?  Other 
than that, the project is going as  planned.
Ed  WB2LHI