[time-nuts] suggestions on getting 24 Mhz ?

Attila Kinali attila at kinali.ch
Sun Apr 15 06:36:04 EDT 2018


On Wed, 11 Apr 2018 03:00:23 -0700
Pete Lancashire <pete at petelancashire.com> wrote:

> Needed for SDR project as external clock source.

If your goal is, as Jim guessed, to get 24MHz from 10MHz and
you are using something like an RTL-SDR, then how about just
passing the 10MHz through a CMOS gate to square it up and
get nice harmonics, then pass a wire close to the crystal.
This should injection lock the crystal to right frequency.
It wont be a strong lock due to the 5:12 ratio, but for something
like a crystal that is already quite close, that should do the trick.

Alternatively, using an ADF4002 with a small uC to configure it
and a VCXO/VCO should also work.

			Attila Kinali
-- 
<JaberWorky>	The bad part of Zurich is where the degenerates
                throw DARK chocolate at you.



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