[time-nuts] "Piezo Little Wonder" OCXO
Richard (Rick) Karlquist
richard at karlquist.com
Fri May 30 11:33:56 EDT 2008
Early GPS receivers used a 10.23 MHz time base.
Probably related to 2^10-1.
Some GPS manufacturers approached HP about making
a 10811 on 10.23 MHz. There is a circuit modification
for 10.23 MHz and some crystals were made (I
have some somewhere). However, I don't believe
any 10.23 MHz 10811's were sold. This unit was
probably intended to meet the need not filled by HP.
Rick Karlquist N6RK
Randy Leifer wrote:
> This is surplus item I found.
> Piezo Crystal Company
> "Piezo Little Wonder"
> model # 2910007-27
> Does anyone know the pin-outs (see photo/link)?
> What is a the freq 10.238 MHz used for ?
> There is a trim pot, but I doubt it will trim away
> 238k to get to 10MHz.
> THANKS !!
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