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

Bob Camp lists at rtty.us
Fri Jan 13 12:50:19 EST 2012


Hi

Interesting videos.

Answers to a couple of the questions he asks in the tear down video:

The foam is there as thermal insulation. It's not for mechanical support.

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.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of lists
Sent: Friday, January 13, 2012 4:09 AM
To: time-nuts at febo.com
Subject: [time-nuts] FE-5680A tear down on Youtube

Hi,

This is my first post to the list, but I have been a long time reader and
found it extremely interesting and informative.

I think you guys might find this interesting.. Its a video of a FE-5680A
being dissembled on Youtube.
I had noticed that within hours of the video being published 14 of the
cheaper 5680A's were sold! as the producer of the video (not me) has over
14,800 subscribers, 
my thoughts are that this may have some effect on the used FE-5680A price or
even advanced depletion of the stock.. I'm glad mines on the boat already.

The tear down:
http://www.youtube.com/watch?v=FRdGsSu5Nec

The "theory" of operation:
http://www.youtube.com/watch?v=I55uLRRvLCU

Sam.

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