[time-nuts] 10 MHz oscillators vs 100 MHZ

KA2WEU at aol.com KA2WEU at aol.com
Tue Dec 2 13:26:57 EST 2014

Hi from NJ,
I am more involved in 100 Mhz to 128 MHz crystal oscillators and their  
measurements,  10 MHz design is new for me.
I have analyzed and measured the famous HP 10 MHz SC based oscillator,  
disassembled it, admired and measured the crystal. Does anyone still makes such 
 a large and good device.  Congratulations to the "inventor" of this  
oscillator !!
Looking at 100 MHz oscillators, they have 18 to 20 dBm output and are  
advertised at -145 dBc/Hz at 100 Hz offset and - 187 dBc/Hz at 1 MHz, the 10 MHz 
 oscillator just gets -165 dBc/Hz far off with NEL looking as the  best.
Who can get me up to speed ?  
Thanks, Ulrich , N1UL 

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