I'd recommend keeping the involved frequencies and power as low as
possible. The VCO/PLL route is probably the most straightforward, but
using arithmetic operations instead can be simpler at this frequency,
because the filtering can be readily done with common crystals.
If you divide the 10 MHz by 5, then mix the resulting 2 MHz back with
the 10, you'll get mostly 12 and 8 MHz. Double that result to get mostly
24 and 16 MHz, then filter the 16 MHz out with as fancy a filter as
necessary. 16 MHz is a very common crystal frequency, so you could do
that for filtering, or even make a ladder filter with a bunch of them.
With the VCO/PLL approach, the desired 16 MHz will be the highest
frequency, while the arithmetic one uses 24 MHz maximum working
frequency, neglecting harmonics. The logic can all be done with 74HC, at
reasonable quietness and power.
Ed
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