[time-nuts] Generating a stable 26MHz and 19.2MHz from 10MHz

Anders Time anderstime at gmail.com
Sat Jul 2 18:47:02 UTC 2011


Thanks a lot for the input.
You guys gave me a lot of ideas to work from.
The oscillator is an old 10MHz OCXO BVA(electrodeless quartz crystal) from
"BVA Industries" with one second allan 1e-13 and -125dBc at 1Hz. So i want
to do my best to keep that stability as good as possible at the other needed
frequencies(19.2MHz and 26MHz).
Thanks
Anders

On Fri, Jul 1, 2011 at 1:33 PM, Anders Time <anderstime at gmail.com> wrote:

> I want go generate a stable 26MHz and 19.2MHz signal with stability in
> the 1E-13 range at 1s from my 10MHz BVA.
> Have been thinking about dividing the signals down to 1MHz and 100kHz
> and PLL (50Hz BW or so) a reasonable stable 26MHz and 19.2MHz OCXO to
> that signal. But I'm worried that the division will generate noise so
> it will not be stable enough?
> Have also been thinking about using a DDS to the 26MHz and 19.2MHz and
> then pll, but the DDS subject seems to bee very difficult to get a
> grip on. Is it possible to generate a signal with that kind of
> stability in the 1s range?
> Thanks
> Anders
>


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