Hi I've looked at a random sample of a couple dozen Rb's that are in the 5 to 30 year old range. In about 90% of the cases I'm reasonably certain they haven't been adjusted since they left the factory. If they still worked, they all came in at or below +/- 3x10^-9.
Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Albertson Sent: Wednesday, July 13, 2011 10:21 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Worst possible error on a rubidium On Wed, Jul 13, 2011 at 7:10 PM, Jose Camara <[email protected]> wrote: > This is a very interesting question, same as "if someone can't > afford a GPSDO, Cesium or other time-nutty contraption, but buys a > second-hand, uncalibrated Rubidium as his primary timebase, how accurate > would it be"? I think that is actually an interesting question. Kind of like asking the spec's on the cheapest wrist watch sold at Wallmart. Is that $5 watch really usable?" Had For years I was even cheaper and used a square can TTL oscillator salvaged from some dead computer part as my primary reference. and for most uses even the 100PPM can was over kill Chris Albertson Redondo Beach, California _______________________________________________ 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. _______________________________________________ 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.
