[Milsurplus] Xtal question

[Glenn Little WB4UIV]

The screw on the top probably sets the pressure against the crystal 
wafer. The frequency can probably be changed by adjusting this screw.


73
Glenn
WB4UIV



At 06:40 PM 3/29/2008, Hue Miller wrote:
>I have 3 of those Valpey crystals and also had wondered what
>they were. There is a single screw on top the package but
>removing the screw does not seem to allow opening, etc. or
>actually accomplish anything that i can detect. I wonder what
>that is for. I was hoping i could open the package which is the
>round "pill shaped" form similar to 1930s crystals. If i cannot
>figure out a way to open the crystal i suppose i will just donate
>them to some LF experimenters, the frequency i think doubles
>to our 1 watt limit experimental LF band here.
>
>The other crystal, never seen one with 6 legs, but 4495 is a
>classic air-ground frequency of the Army Air Force in WW2.
>-Hue
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