[time-nuts] FE-5680A tear down on Youtube

Bob Camp lists at rtty.us
Wed Jan 18 12:18:04 EST 2012


Hi

The Russians developed the material back in the late 60's. They were trying
to sell it in the US by the mid 70's through Raychem. They had limited
success peddling it. The gotcha was the fabrication accuracy. I don't know
the name / location of the Russian institute that did the actual
fabrication. 

They have continued to develop OCXO's based on the stuff at least into the
late 90's. Some of those parts are pretty high performance units. You might
find some data on the Morion web site. 

I suspect there is a reasonable body of papers on it all in Russian. They
did a *lot* of research and development on the material and the OCXO's. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Attila Kinali
Sent: Wednesday, January 18, 2012 7:20 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FE-5680A tear down on Youtube

On Fri, 13 Jan 2012 12:50:19 -0500
"Bob Camp" <lists at rtty.us> wrote:

> The gizmo on top of the crystal is a rapid transition thermistor. The
> Russians came up with them for use in OCXO's back in the 1970's. It's
there
> to heat the VCXO crystal, sort of an OCXO.

Do you have any references to this? I couldn't find anything on the net.

				Attila Kinali
-- 
The trouble with you, Shev, is you don't say anything until you've saved
up a whole truckload of damned heavy brick arguments and then you dump
them all out and never look at the bleeding body mangled beneath the heap
		-- Tirin, The Dispossessed, U. Le Guin

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