On Sun, Dec 7, 2014 at 7:03 PM, Bob Camp <kb...@n1k.org> wrote: > Of the $20K to $30K that a new tube costs, I doubt the material and basic > assembly adds up to over $5K. The rest of the cost is the final assembly / > test / yield / re-test / tooling / labor. That’s doing them in as high a > volume as anybody does them. You will need either a couple of H-Masers or a > set of Cs’s running and in good condition simply to make sure you got them > put together right ….
I'm sure that assembly/test/yield/re-test/tooling/labor are all killers, but why the comment on h-masers? CS beam standards are largely self-calibrating, thats why they can be primary references. For checking against systemic error you might want a CS ensemble, but everyone has access to one of those for long term measurement via GPS. _______________________________________________ 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.
