Thank you very much, HP did not specify the 10 and 100 MHz values.... I can measure but don't have the generator..state of the art attached. Thanks, Ulrich    In a message dated 1/23/2018 6:48:52 PM Eastern Standard Time, marklgoldberg@gmail.com writes:   I do not have great equipment to do the measurement but it is at least this good at 10 MHz as measured on one of my 8642As. I can't measure phase noise at 30 or 100 MHz.   Offset(Hz)1020501002005001,0002,0005,00010,00020,00050,000100,0001,000,000Phase Noise(dBc/Hz)-96.9-103.0-106.9-109.7-117.7-128.4-136.4-140.1-143.1-144.9-145.6-145.7-146.2-146.6 73,   Mark W7MLG On Tue, Jan 23, 2018 at 4:21 PM, Ulrich Rohde via time-nuts <time-nuts@febo.com> wrote:   Who has a 10 and 30 and 100 MHz phase noise plot from 1 Hz to 1 MHz ? Thanks, Ulrich N1UL  _______________________________________________ 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.