Just wanted to add, their US distributor has one with a custom xtal that claims even lower phase noise and has provided a plot comparing the two
I see the US distributor says the "custom" unit's phase noise "improv[es] on an already impressive figure" of the stock unit. But in reality, even the custom unit doesn't have an "impressive" PN figure -- the phase noise is still at least 10dB worse than a real GPSDO. It appears that the outputs are generated by a DDS or similar, so that is not surprising. Good for frequency agility, lousy for frequency stability and spurious outputs.
This thing has its place in the world of clocks, but it is *not* a precision GPSDO. It is not even in the league of a number of hobbyist and DIY designs. I wish people would stop recommending it to people whose application calls for a real GPSDO (such as multiplying up to the GHz region).
Best regards, Charles _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
