[ARC5] Can old crystals be restored ?

[J Mcvey]

The contractor on the one I'm going to operate on is Standard Piezo. I'll post the post-op results.
 

    On Saturday, June 11, 2016 5:57 PM, Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:
 

     As usual I forgot something.  If you read Virgil Bottom's history 
you will discover that the crystal industry was almost completely a 
result of ham radio.  Most of those who got into the business of 
manufacturing frequency control crystals depended on radio hams as their 
primary market until the military began to demand very large numbers of 
crystals during the war.

On 6/11/2016 2:05 PM, Dennis DuValll via ARC5 wrote:
> Yep, fracture in the wafer.  Not always easy to see.
>
> Dennis D.  W7QHO
> Glendale, CA
>
> ****************
>
>
>
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>
>> On Jun 11, 2016, at 11:32 AM, Kenneth G. Gordon
>> <kgordon2006 at frontier.com <mailto:kgordon2006 at frontier.com>> wrote:
>>
>> In my experience, the only FT-243 which cannot be fixed one way or
>> another is that the crystal itself is broken.
>>
>
>
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL
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