Hi The lock input on the X72 appears to be intended for the "I need to put it on frequency" stuff rather than doing a GPSDO. It's got a pretty coarse step size for a GPSDO and the filtering tweaks aren't as extensive as you would like.
For a Nixie clock, there's no need for the GPS if you have an Rb. If the clock ticks off seconds, you won't see anything for a very long time. If it's as good as some I've seen, most of a century isn't out of the question. The tubes, power supply, and the Rb it's self will probably only run for 20 years. Of course with the GPS, there's no need for the Rb... For the sake of completeness I assume the Rb version will have a leap second button on it. Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Michael Baker Sent: Tuesday, August 23, 2011 8:55 AM To: time-nuts@febo.com Subject: [time-nuts] GPSDO + X72...?? Hello, TimeNutters-- I understand that I will get less output jitter with a high quality GPSDO than a Rb oscillator, but, even so, having a Rb unit locked and disciplined by a GPS receiver appeals to me. The one thing that I noted about the X72 is that the factory has provided for a convenient way to GPS steer it. Hmmmmm...... Maybe, if I could find an X72 for a decent price and feed it into a Nixie-tube time-clock display, it would make a neat curiosity conversation object for the living room fireplace shelf. So far, the cheapest eBay X72 units I have seen were around $300 and no bargain... Mike Baker Micanopy, FL ------------------------------ _______________________________________________ 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. _______________________________________________ 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.
