[time-nuts] Inside a CTS 1960017 OCXO

[Tom Holmes]

Rob...

Are you and Adam using the same Perseus receiver for your measurements?

Have you looked at another similar type (as in small PCB configuration) and powered (as in from your HP supply) oscillator for comparison?

Not to beat the PS question to death, but does a battery supply change the outcome?

Tom Holmes, N8ZM

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Rob Sherwood.
Sent: Saturday, February 27, 2016 7:20 PM
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Subject: Re: [time-nuts] Inside a CTS 1960017 OCXO

Both  Adam and I measure the same spurs.  Rob, NC0B

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Graham / KE9H
Sent: Saturday, February 27, 2016 2:08 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Inside a CTS 1960017 OCXO



Rob:
Are you sure you were running it with a clean power supply?
Any 60 Hz ripple on the supply could show up as AM/PM modulation.
You might want to try another 5V power supply before you give up on the oscillator.
--- Graham