I also have two of the crystals. The discs are used to adjust the phase of
the acoustic feedback to the resonator ends.
John WA4WDL
--------------------------------------------------
From: "Fabio Eboli" <fabi...@quipo.it>
Sent: Tuesday, January 22, 2013 7:14 PM
To: "Discussion of precise time and frequency measurement"
<time-nuts@febo.com>
Subject: Re: [time-nuts] One Kg Quartz Resonator
Il 2013-01-22 23:19 Tom Van Baak (lab) ha scritto:
Yes, Don, those old quartz bars are rare and amazing:
http://leapsecond.com/museum/gr676b-50kc/
http://leapsecond.com/museum/gr1190a/
What is the function of the (metal?) disc
plates near the two ends of the rods?
Their position seem to be trimmable.
Thank,
Fabio.
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