[R-390] PTO

[Gene Dathe]

Well, my pto project was successful and I now have a working spare.  
Aligning the oldham coupler on the pto shaft took a bit of time, though.  
With the Khz set at -000, there were 3 1/2 turns left of travel.  That got 
me within 25 khz, then rotating the oldham coupler on the shaft got the 
spare within 2 khz of my original.  The point being that I could drop in the 
spare without having to radically reset the zero.

It seems to me that as long as the 1 Mhz travel of the pto is within the 
total mechanical travel between the stops that the radio will work fine, 
just re-zero for that particular pto.  But say I accidentally installed it 
with 5 turns on the shaft, up about 200 khz. I couldn't zero it before I hit 
the end of travel.  Now a fanatic might want to "center" the 1 Mhz travel 
within the stops.

My question to those that did this sort of thing for a living is:  Did you 
have a SOP when installing the pto to mechanically align it?

73 de NAØG  Gene

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