Re: [Discuss-gnuradio] 64MHz USRP Oscillator

[Chris Stankevitz]

Wireless Monster wrote:
> Hi All,
>
> I am having lots of issues with the USRP  64MHz (20ppm) on board 
> oscillator which does not allow me to get exact and constant RF 
> frequencies out of the RFX900 board. I can not really fix that in SW so 
> I was thinking about replacing the 64MHz crystal with a more precise 
> one. Has anybody a suggestion of which part to use?

I have replaced the crystal with the 20ppm crystal, but I was unable to 
get an "exact and constant" frequency.  I ultimately added a software 
PLL to track the clock errors.  Before I upgraded my software PLL, I 
used a signal generator as an external clock source which worked very well.

Chris