Hi A far more common approach is to let the two oscillators free run and to record something like a local broadcast station. You then post process all of the data to give you the phase accuracy. One of several gotcha’s is the stability of any radio link at the level you are looking for.
Bob > On Jun 16, 2017, at 5:01 PM, life speed <[email protected]> wrote: > > I was afraid of that, I guess it doesn't hurt to ask. Perhaps I could > implement an ISM band radio link for the purpose of locking the two > oscillators. Of course that wouldn't reach a couple miles either. > > - Lifespeed > > > > Hi > > A *lot* depends on your definition of “phase locked”. If indeed you are > after 0.1 degree at 100 MHz, that gets into the “no can do” range. To put > some numbers on it, 0.1 degree at 100 MHz is 2.7 ps. GPS time as received > simply is not stable to that level … If you drop back to about 20 degrees, > you start to get into the “maybe can do” range. > > Bob > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
