I was thinking about designing a 2 m (144-146 MHz) ->HF (28-30 MHz) transverter, using a 116 MHz local oscillator feeding a level 30 mixer.
116 + 28 = 144 116 + 30 = 146 I'm wondering what's the best way to generate 116 MHz with very low phase noise. Phase noise at < 20 kHz offset is particularly important, but 200 kHz would be fairly important. Outside that, it does not matter too much. The ability to lock to 10 MHz would be "nice", but certainly not essential, as absolute frequency stability would not be of prime importance. Getting the phase noise as low as possible would be more important. I expect better performance can be achieved if one forgets about locking the signal source to something else, but I may be wrong. An HP 8663A sig gen has <-147 dBc/Hz at 10 kHz offset, but I'd hope its possible to produce something better than is possible in a commercial sig gen that covers up to 2.5 GHz. Dave _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.