See below In a message dated 8/11/2016 4:30:47 P.M. Eastern Daylight Time, john@miles.io writes: Remember that L(f) is expressed in dBc/Hz, not dBm/Hz. If it were dBm/Hz, then kT would be the limit. But in dBc/Hz terms, the limit is 177 + the DUT's output power in dBm - transistor large signal NF in dB . Assuming a 50 ohm system, of course. -- john, KE5FX Miles Design LLC > -----Original Message----- > From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Mike > Feher > Sent: Thursday, August 11, 2016 12:51 PM > To: 'Discussion of precise time and frequency measurement'; > KA2WEU@aol.com; tvb@leapsecond.com > Cc: enrico.rubiola@gmail.com > Subject: Re: [time-nuts] State of the art of crystal oscillator measurements > > kT is indeed relevant for a physical implementation. - Mike > > Mike B. Feher, EOZ Inc. > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 office > 908-902-3831 cell _______________________________________________ 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.

I am quite intrigued by two things here: 1. What improvements were made to the instruments, and 2. What were the instrument settings and test setups? Thanks. Tom Holmes, N8ZM -----Original Message----- From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of KA2WEU--- via time-nuts Sent: Thursday, August 11, 2016 4:34 PM To: time-nuts@febo.com Subject: Re: [time-nuts] State of the art of crystal oscillator measurements See below In a message dated 8/11/2016 4:30:47 P.M. Eastern Daylight Time, john@miles.io writes: Remember that L(f) is expressed in dBc/Hz, not dBm/Hz. If it were dBm/Hz, then kT would be the limit. But in dBc/Hz terms, the limit is 177 + the DUT's output power in dBm - transistor large signal NF in dB . Assuming a 50 ohm system, of course. -- john, KE5FX Miles Design LLC > -----Original Message----- > From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Mike > Feher > Sent: Thursday, August 11, 2016 12:51 PM > To: 'Discussion of precise time and frequency measurement'; > KA2WEU@aol.com; tvb@leapsecond.com > Cc: enrico.rubiola@gmail.com > Subject: Re: [time-nuts] State of the art of crystal oscillator measurements > > kT is indeed relevant for a physical implementation. - Mike > > Mike B. Feher, EOZ Inc. > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 office > 908-902-3831 cell _______________________________________________ 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. _______________________________________________ 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.