[time-nuts] 10MHz to 25MHz

[Richard (Rick) Karlquist]

On 1/18/2017 6:34 PM, David wrote:

> An alternative very simple design I might try is a variation of the
> active frequency multiplier where the 5th harmonic is filtered
> directly from the output of the digital divide by two stage.
>
That's a useful trick to reduce the filtering burden.  Having said
that, if you need good spectral purity, the filtering is still
going to be very non-trivial.  The original poster is obviously
not an expert in filters and will not be successful trying that
approach, except for very low performance design.  Even if
you are a filter expert, components are hard to get.

Rick N6RK