Hi Cesiums (that may be on their last legs or maybe not) are pretty common in the market. Prices vary, but generally are < $4,000. Bought new they are in the $70,000 range. Masers show up much less often. Price wise … that depends. The cheapest working unit I have heard of was in the $30,000 range. New, you see some with $150,000 price tags on them.
Fountain standards for the commercial market have been a “real soon now” sort of thing since the 1980’s. I have yet to see anybody selling one (as opposed to building it in a lab and using it). Yes, there always has been a lot of talk. There don’t seem to be any shipments…. State of the art Ion standards are something you lock up a building full of very smart people for a good chunk of their career to come up with. Unless you have a budget funded by a rich uncle (or something similar)… don’t go there. That sounds very discouraging. Actually it’s not. There is no real need to have a “best in the world” fountain or ion standard. One that simply works probably would be fine by any of us. The same is true of the Maser. Putting in a few years of work to get one up and running might be an ok thing if the price was right. ===== The bigger point is: what do you do / what can you do with this stuff? As you scale up the standard, the bench that goes around it probably scales as well. The counter that was fine back when you only had a partially working OCXO as a standard may not be “good enough” with your maser. Watching the second tick on your WWVB clock may no longer be “interesting” you may want to plot signals from far away stars …. It just keeps getting worse !!! Bob > On Nov 20, 2017, at 9:43 PM, Dana Whitlow <[email protected]> wrote: > > As far as I knew, the highest level steps *actually on the market* are > the Cesium beam clocks and the active hydrogen masers. Are any > of the newer technologies available for purchase today? > > Dana > > > On Mon, Nov 20, 2017 at 6:13 PM, Hal Murray <[email protected]> wrote: > >>> aren’t too many steps after that >> >> Your imagination is broken. >> >> There are lots more steps. Most of them are very expensive. >> >> >> -- >> These are my opinions. I hate spam. >> >> >> >> >> _______________________________________________ >> 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. _______________________________________________ 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.
