[time-nuts] Fwd: HP5061B Versus HP5071 Cesium Line Frequencies

Donald E. Pauly trojancowboy at gmail.com
Fri Jun 2 14:09:12 EDT 2017


If we build this circuit it would be a bench model not designed to be
inside a hot chassis.  It would be able to lock ± 5° C of 25° C.  My
idea of an oven is to keep the crystal and oscillator at 25° C ±0.001
°C with 60 second warm up/cool down time.


---------- Forwarded message ----------
From: Bob kb8tq <kb8tq at n1k.org>
Date: Fri, Jun 2, 2017 at 5:57 AM
Subject: Re: [time-nuts] HP5061B Versus HP5071 Cesium Line Frequencies
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>


I would suggest you check a few real crystals over the 20 to 40C range ….
With all the “stuff” in a 5061, it will change (rise) at least 10C
after turn on.


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