[time-nuts] One Kg Quartz Resonator

[jmfranke]

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" <FabioEb at quipo.it>
Sent: Tuesday, January 22, 2013 7:14 PM
To: "Discussion of precise time and frequency measurement" 
<time-nuts at 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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