[time-nuts] "Piezo Little Wonder" OCXO

Brooke Clarke brooke at pacific.net
Fri May 30 16:24:10 UTC 2008


Hi Rick:

10.23 MHz shows up in the ICD-200 spec on how the GPS signal is generated.

I've got a GPS sig gen see:
http://www.prc68.com/I/5001A.html
http://www.prc68.com/I/5001Bot.html
and it has an HP 10.23 MHz oscillator.

Have Fun,

Brooke Clarke
http://www.prc68.com/P/Prod.html  Products I make and sell
http://www.prc68.com/Alpha.shtml  All my web pages listed based on html name
http://www.PRC68.com
http://www.precisionclock.com
http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Web Cam

Richard (Rick) Karlquist wrote:
> 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.
>>
>> http://i5.photobucket.com/albums/y177/Midiot/DSCN3364.jpg
>> http://i5.photobucket.com/albums/y177/Midiot/DSCN3366.jpg
>>
>> THANKS !!
>>
>> =Randy=
>>
>>
>>
>>       
>>
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> 
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