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

[Robert McGwier]

There is a multiplier circuit/ PLL in the DBS-RX.  Whatever phase noise 
is coming from the oscillator is being  multiplied considerably by this 
upconversion to be used at LO in the DBS-RX.  You cannot get low phase 
noise oscillators and high performance mixers in that small a package. 
Together these considerations imply more power and territory and thermal 
control than is available with the DBS-RX.

Bob





Marcus Leech wrote:
> 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.
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