Hi ummm …… errr ….. yes.
If you mount the OCXO that drives an 800 MHz FM narrowband transmitter in the middle of a wall panel on the rack, you *can* measure the rotation speed of the blowers. That’s not a guess, that’s empirical knowledge :) Bob > On Jul 12, 2016, at 8:24 PM, Hal Murray <[email protected]> wrote: > > > [email protected] said: >> All of those motors in the building are rotating at line frequency. You >> don’t just have an electromagnetic field. You can have an acoustic / >> vibration field as well. Probably not a big deal, but it’s there …. > > Most of the medium sized motors run at slightly below line rate, and often at > half of line rate. I'm thinking of the classic squirrel cage induction motor > vs a synchronous motor. A quick google search found 1725 and 1750 RPM. > > Is it possible to measure things accurately enough to notice that? > > > -- > 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.
