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

From: Marcus Leech
Subject: Re: [Discuss-gnuradio] GPS with DBSRX, Almost There
Date: Wed, 07 Mar 2007 14:40:15 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20060130 Red Hat/1.7.12-1.4.2

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
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
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