Am 25.01.2016 um 18:20 schrieb Graham / KE9H: > There are clock distribution parts designed to do this low noise frequency > conversion and distribution. > > Consider TI LMK04100 > .... > > 150 fs class jitter. > But only if you integrate the noise only from 12 kHz offset to 20 MHz. It is a telecom spec. regards, Gerhard