[time-nuts] Hydrogen maser frequency jumps

[Poul-Henning Kamp]

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In message <CALH-g5bQ-muUQP=HpXR6wNciNqBwwOFJ0XOb3q15wYOEwOXmxg at mail.gmail.com>
, Jim Palfreyman writes:

>The weird thing is that the jump is ~0.7ns and that 1/0.7E-9 is close-ish
>to 1420.4MHz which is the hydrogen line. Too much of a coincidence for me.

Is there a direct digital divider chain to the PLL which steers the
5Mhz OCXO ?

If so the obvious thing to look at is a weak input signal on the input
side of that divider.


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