[time-nuts] Antique precision timing device without, > electronics
alex at pcscons.com
Fri Mar 17 18:47:20 EDT 2017
Professor Dr. Rohde of Rohde %Schwarz designed in the 1940-es one tuning
fork oscillator for 400Hz which was to one crystal phase locked. The
company built many exemplars from it. I have seen one working unit in 1967.
On 3/17/2017 1:14 PM, Dan Kemppainen wrote:
> This is all cool stuff, and neat to read about.
> What's the best (Most stable, most accurate, best adev, etc.) tuning
> fork oscillator made?
> What the lowest frequency tuning fork oscillator ever built? Was 1Hz
> ever achieved commercially?
> Fun stuff for Friday!
> On 3/17/2017 12:00 PM, time-nuts-request at febo.com wrote:
>> Message: 8
>> Date: Fri, 17 Mar 2017 01:34:39 +0100 (CET)
>> From: "iovane at inwind.it" <iovane at inwind.it>
>> To: Discussion of precise time and frequency measurement
>> <time-nuts at febo.com>
>> Subject: Re: [time-nuts] Antique precision timing device without
>> <1660573894.5853221489710879161.JavaMail.httpd at webmail-13.iol.local>
>> Content-Type: text/plain;charset="UTF-8"
>> This is mine, used to calibrate some aircraft related equipment:
>> and its diagram:
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