Back in the late 80's we were building a synthesizer with extremely strict phase noise characteristics at an output of 44 GHz. At the output of our ultra low noise Rubidium, we also added a 100 Hz BW crystal filter. At the time, even though Dave Allen was involved, our spec was such as the noise power was not to exceed a certain power lever integrated over specified BW, without any exclusion band around the carrier. Lincoln Lab built the feasibility model and I manually integrated their noise power and they exceeded the limit by 10 dB. So, I argued that they needed to give us an 8 KHz exclusion window in the spec, and won. Regards - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 848-245-9115 -----Original Message----- From: Francis Grosz <[email protected]> Sent: Wednesday, September 15, 2021 1:06 PM To: [email protected]; [email protected] Subject: [time-nuts] Re: time-nuts Digest, Vol 209, Issue 14 Marek, Following Mark's suggestion, if you really want to clean up the 10 MHz you might want to look at the AXTAL AXPLO10. Not a cheap solution, but it's specifically designed to do what you're looking for. Francis Grosz _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
