Re: [Discuss-gnuradio] GPS with DBSRX, Almost There

[Marcus Leech]

Gregory W Heckler wrote:

> I measured the phase noise of the 64 MHz board clock. Looking at the 
> result, I doubt the board clock is producing the phase noise I am 
> seeing in my receiver.
>
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>  
Hmmm.  The PLL on the MAX2118 downconverter has typical phase-noise 
specs of around -80dBc/Hz at 10Khz
 offset.  Below 1Khz offset, the phase noise increases to about 
-55dBc/Hz, which is about 25dB worse than the
 xtal oscillator.  According to the datasheet, anyway...


--
Marcus Leech                            Mail:   Dept 1A12, M/S: 04352P16
Security Standards Advisor        Phone: (ESN) 393-9145  +1 613 763 9145
Strategic Standards
Nortel Networks                          address@hidden