[R-390] PTO success

[DJED1 at aol.com]

Thanks to all the lore collected through this group, I have gotten both my  
PTOs into shape.  I adjusted the endpoint on the Progressitron, and it now  
meets original specs (300 cycle error after calibration at the nearest cal  
frequency.  I'm impressed, for the most part it's within 100 cycles within  50 KHz 
of a calibration point.  Off by a max of 1 KHz if calibrated only at  
mid-range.
I resolved the problem with the Cosmos after recollecting a list discussion  
about having pressure on the tuning shaft giving a cyclic variation in  error. 
 Sure enough, I loosened the mounting screws, moved things around a  bit, and 
it looks good- almost all 25 KHz points within 300 cycles without  
recalibrating.   I wasn't looking forward to tackling all those little  screws again.
Now I have to decide which one to leave in the radio.  I wanted to see  if 
the Progressitron was more stable, but I hate to mess up the setting on the  
Cosmos now that I've got it screwed in just right.  
Incidentally, calibration is easier with the synthesized HP generator I  got. 
 Just dial up each 25 KHz increment and read the error on the radio  dial.
Ed  WB2LHI