Hi Gary;
That one is defective.
The RefCal # really should be in the range of 49.379.600  to 49.380.400. (+- 400hz from 49.380.000). If out of that range, and you have the K144XV with Reflock, it will be too far for the RefLock to pull it on freq.
Same for the K3EXREF, but the range is a bit wider.

If it settles down and is just too far out of range, you can take the sticker off and tweak it closer to 49.380.000. Go as high as you can, then back down a little. You don't want to be too close to it's limit as it will go wacky.

We do still have the standard oscillators, part E850323 or E660033.
Keith WE6R Elecraft K3/K4 Tech.
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