Hello Johnny. There is still no implementation of the temp vs. frequency data for the KTCXO-3. You can enter the data into the Utility program, but it is not yet used for anything. The KTCXO-3 does have better stability than the stock reference oscillator, and in may cases meets the 0.5 ppm spec without the implementation of the temp data. You still need to perform frequency calibration using either method 1 or 2 from the manual. Or, with the new K3EXREF board, the correction is done for you, if you are using a high stability external reference. This works very well here. I hope this info helps. 73, Bruce, N1RX > There are Method 1 and Method 2 for frequency calibration on P.50 of the K3 operation manual. Has the calibration > specific for KTCXO3 implemented? Do I miss anything? Or, simply, is there any frequency calibration needed for > KTCXO3 (apart from data entry in K3 > Utility) > Johnny VR2XMC
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