[ARC5] Uncommon 274N Xtal Marking

[Bob kb8tq]

Hi

I’d bet at least a six pack of beer that somebody had an issue with the phrasing on the contract. There
was a *lot* of improvement in the measurement of crystals as WWII went on. Anybody doing it early would
be making some assumptions about what was what. There are a number of papers about how well / how poorly 
this all worked out.

Bob

> On Jul 22, 2017, at 7:25 PM, David Stinson <arc5 at ix.netcom.com> wrote:
> 
>  
> Trying again:
> 
> Here's a marking I haven't seen before. From the calibration crystal
> inside a first-run BC 696 transmitter. The crystal was built by 
> Aircraft Accessories Corp of Kansas City, Kansas. 
>  First time I've seen this "resonator" marking. Comments?
>  
> <20170722_133427_resized.jpg><20170722_133439_resized.jpg>______________________________________________________________
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