I asked myself, do I really need a GPSDO or would an x-tal oszillator stable enough? Whats about the phase noise?
As I had no x-tall of ~25Mhz lying around, i tried it with a FA-SY2 from http://www.box73.de which I use for testing here...
The test went much better than expected. After powerup for about half of an hour, it is stable enough for CW.
And on top, the phase noise is very low and it can be tune to any frequency between 10 and 280 Mhz.
see you soon on QO-100 ( waiting for the upconverter )