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.
73
KJ6UHN
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!
Dan
On 3/17/2017 12:00 PM, time-nuts-requ...@febo.com wrote:
Message: 8
Date: Fri, 17 Mar 2017 01:34:39 +0100 (CET)
From: "iov...@inwind.it" <iov...@inwind.it>
To: Discussion of precise time and frequency measurement
<time-nuts@febo.com>
Subject: Re: [time-nuts] Antique precision timing device without
electronics
Message-ID:
<1660573894.5853221489710879161.javamail.ht...@webmail-13.iol.local>
Content-Type: text/plain;charset="UTF-8"
This is mine, used to calibrate some aircraft related equipment:
https://www.flickr.com/photos/103726899@N08/33326340242/in/dateposted-public/
and its diagram:
https://www.flickr.com/photos/103726899@N08/33482556075/in/dateposted-public/
iov
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