[R-390] Problem, 1st Crystal Oscillator, Solved

[Mike Hardie]

First of all thanks to all who offered help, all the replies centered around 
the 17 mcs crystal having drifted, and that turned out to be the problem.

I hooked up a frequency counter to J221, which is basically the output of 
the crystal oscillator, and with nothing changed the indicated frequency was 
16991.42 kcs, an "error" of almost 9 kcs.  Next the cylindrical oven 
assembly was pulled and the cover removed.  With the help of long nosed 
pliers the 17 mcs crystal came right out, I expected this to be more 
difficult with maybe some sort of screw down retainer, but not so.  A spare 
17 mcs crystal obtained from Fair ages ago was inserted, and the assembly 
plugged back in the chassis.  Result - 17000.46 mcs, close enough for 
you-know-what.

This turned out to be an easy fix.  It would be an interesting experiment to 
see if the old crystal could be ground up to 17 mcs.

Mike VE7MMH