> On Nov 22, 2015, at 7:47 AM, paul swed <paulsw...@gmail.com> wrote: > > As mentioned a nice answer to the wwvb modulation change. > I looked up the parts and it seems that they have gone into the NOS state. > Though you can get some from digikey and such especially in the SOIC > package. Also the VCO isn't available. > It appears that the Chinese sight has the lmc6484 and LM387n at reasonable > prices for small quantities. Most likely will order from there. > Have not checked out the PIC chip yet. > The 74HCXX are common and reasonable.
That’s kind of a shame. I’m sure a redesign with modern SMD parts could be accomplished. The big question is how the stability of a wwvb disciplined oscillator would compare to a GPS disciplined one (all other things being equal). Well, it’s a big question for me, since I have no idea, but I imagine simply asking here will give an immediate answer. :) I’d have to guess that the PLL would behave better given a 60 kHz reference rather than a 1 Hz one. But how stable is that 60 kHz reference after going through, what, a thousand miles of ionosphere or so? _______________________________________________ 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.
