This oscillator seems to have been more a frequency standard then a noise standard. Today's 10 MHz oscillators are different/better, such a crystal is no longer available/made. I have more experience with 100 MHz, 125 and 128 MHz. Once I am back in the USA I will send some measured results and comments. Thank for this reference : http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1981-03.pdf Ulrich In a message dated 10/28/2015 7:01:16 P.M. W. Europe Standard Time, [email protected] writes:
[email protected] said: > The 2N5179 in the 10811 is selected for minimum beta and Ft at 20 mA, which > is the start up condition due to the ALC being at full gain. It has a > special HP part number, so you wouldn't know this just looking at the parts > list. How much of a difference does that selection step make? I'd expect the parts within a batch to be very similar, more so for mature parts. -- 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.
