[time-nuts] Re: time-nuts Digest, Vol 209, Issue 14

[Mike Feher]

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 <nolafg47 at gmail.com> 
Sent: Wednesday, September 15, 2021 1:06 PM
To: time-nuts at lists.febo.com; marek.dorsic at gmail.com
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