10 MHz reference CW measured same as 5 MHz WWV

<p>This is a supplement to file&nbsp;K4BSE 34.124 -84.203 5 MHz.csv submitted last week, just after the frequency measurement period.&nbsp; I&#39;d wondered about some jumps in frequency error I saw in my earlier submission (see xlxs file attached of the original frequency measurement run), so in this test I measured frequency error in exactly the same way, except that I was measuring a 10 MHz signal from a rubidium stabilized frequency source.&nbsp; The receiver was still stabilized by a GPSDO.&nbsp; I see some similar-magnitude frequency jumps here (note change in vertical scale).&nbsp; Also some frequency drifts is seen between some of the jumps, consistent with frequency drift in the test data submitted previously.&nbsp; I presume the jumps are due to the frequency calibration jumps in the K3&#39;s local oscillator.&nbsp; As best I can tell, the frequency of the K3 in the locked mode is determined by measurement of the frequency of an external 10 MHz oscillator, which is then used to calculate a correction to the tuned frequency of the radio.&nbsp; The jumps of a fraction of a Hz are consistent with the stated frequency accuracy of the radio when locked to a good reference (eg., the GPSDO used).</p>