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Old March 12th 06, 02:34 PM posted to rec.radio.amateur.boatanchors
Dave Heil
 
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Default WWII FT243 Crystal Manufacturers

Joe McElvenney wrote:
Hi,

Yesterday I bought a 'BOX BX-49-A' (coil/crystal set for the
BC-611 walkie-talkie) with a view to starting a crystal
collection. It contained 24 FT243 rocks from eight different WWII
manufacturers. Just to get an idea of the task ahead, has anyone
compiled a list of these manufacturers from that period?

The few I have so far are marked -

Univ K.C. Telev M.O.
Valpey Crystal
Turner Company, Cedar Rapids
Scientific Radio Prod.
RS MC
Camb Thermionic, Camb Mass
Gentleman Products, Omaha
H.I. Inc
Stand. Piezo
M.P. CO.


Joe, you may add Tedford Crystals (later R/T Labs), Cincinnati, Ohio.

Dave Heil K8MN
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Old March 12th 06, 03:46 PM posted to rec.radio.amateur.boatanchors
 
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Default WWII FT243 Crystal Manufacturers


Joe, you may add Tedford Crystals (later R/T Labs), Cincinnati, Ohio.


There was even a crystal manufacturer in Griffin, Georgia!

I'd hate to think how many there must have been at one time.

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