Ref Oscillator instability problem

N4KS Ken Stuber

My K3 SN 8025 appears to have a ref oscillator instability problem. I must do the Reference Oscillator calibration procedure daily to keep it within reasonable limits. Leaving the K3 turned on continuously helps. I have replaced the original oscillator with the Elecraft KTCXO3-1 1-ppm oscillator. The problem still persists. Any suggestions would be appreciated.

73, Ken

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