[time-nuts] what is the best way to multiply a 10 Mhz signal?

dk4xp at arcor.de dk4xp at arcor.de
Tue Dec 21 16:54:09 UTC 2010


Von:     Stephen Farthing <squirrox at gmail.com>
Betreff: [time-nuts] what is the best way to multiply a 10 Mhz signal?

> I want to multiply the output from my Efratom 101 (10Mhz) to clock a DDS at
> 70 Mhz. Has anyone tried this?

I did 5 MHz * 7 = 35 which is about the same, with CMOS gates and
filtering. ( in the style propagated by Wenzel)  This took a lot of filtering 
to get rid of the last spurii. Too much ado.

I recommend  a 70 MHz VCXO and locking this to the 10 MHz source.

regrds, Gerhard




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