[time-nuts] HP5061B Versus HP5071 Cesium Line Frequencies

Bob kb8tq kb8tq at n1k.org
Sun Jun 4 14:43:58 EDT 2017


Ok, when you wrote the specification for your crystals what was the tolerance on the angle
for those crystals? What did the suppliers who quoted to your spec say about the angle tolerance 
you specified? When they shipped against your volume requirements how did they do against the 
specification? When your incoming QA tested the crystals what did they find? When you put the 
crystals into production oscillators and tested the result how did they perform? 


> On Jun 4, 2017, at 11:09 AM, Donald E. Pauly <trojancowboy at gmail.com> wrote:
> I've bought dozens of them over the years and talked to crystal
> engineers for tens of hours.  I watched them plated and tuned at a
> crystal filter company in Phoenix.  I own Virgil Bottom's book on the
> subject and understood half of it.
> πθ°μΩω±√·Γλ
> ---------- Forwarded message ----------
> From: Bob kb8tq <kb8tq at n1k.org>
> Date: Sun, Jun 4, 2017 at 5:15 AM
> Subject: Re: [time-nuts] HP5061B Versus HP5071 Cesium Line Frequencies
> To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
> Cc: "rward0 at aol.com" <rward0 at aol.com>, "Donald E. Pauly"
> <trojancowboy at gmail.com>
> Hi
> Have you ever tried to actually *buy* a crystal built to a
> specification? There is a
> tolerance on them. That has a profound impact on what you can *buy*.
> Bob
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