[ARC5] Wartime FT-243 xtal mfrs

[Al Klase]

Paul,

I don't know is it will answer ypur question directly, but there is this 
very interesting book:
"Crystal Clear: The Struggle for Reliable Communications Technology in 
World War II"
https://www.wiley.com/en-us/Crystal+Clear%3A+The+Struggle+for+Reliable+Communications+Technology+in+World+War+II-p-9781118104644

Al

On 7/30/2023 9:28 PM, Paul Thekan wrote:
> I recently obtained a box of close to 800 or more FT 243 xtals 
> ,haven't counted them all yet, and was going through them looking for 
> any useful freqs on the ham bands and noticed how many different 
> companies were making xtals during the war. So far I've identified at 
> least 45 companies making these xtals.
>  Is there any info out there that talks about how many companies were 
> involved in making these xtals.
> Thanks
> Paul
> N6FEG
>
>
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-- 
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
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