3 ms·
(1) Atomic clocks. (2) They mix the bands of interest down to intermediate frequencies that can be readily digitized. It's the same old superheterodyne princip
by wl 10y ago
(1) Atomic clocks.
(2) They mix the bands of interest down to intermediate frequencies that can be readily digitized. It's the same old superheterodyne principle we've used for the last century or so.
- graycat 10y agoSuper! Thanks! I wondered how they would get an analog to digital converter to work a sub-millimeter frequencies. So, right, they don't!