); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Tom:
Very interesting. How about building a circuit to drive those GR crystals? The same man is the inventor of all four of the early GR patents, James Kilton Clapp, of "Clapp Oscillator" fame. http://en.wikipedia.org/wiki/Clapp_oscillator In the 1930s GR patents he's showing an inductor in series with the crystal and Wiki dates the "Clapp Oscillator" 1948 where a capacitor is in series. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam Tom Van Baak wrote: > > Maybe because it was written back in 1930's, but one of the better > discussions of quartz temperature control, including considerations > of insulation and isothermal layers (attenuation and conduction) > are in the patents for the old double oven General Radio frequency > standard: > > http://www.leapsecond.com/museum/gr676b-50kc/ > http://www.leapsecond.com/museum/gr676b-50kc/US1967185.pdf > > /tvb > > > _______________________________________________ > 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.
