Re: [Discuss-gnuradio] External clock source Info?

2010-08-18 Thread Sylvain Munaut
Hi, > It seems that 52MHz /64MHz precision clock references are like hen’s > teeth, so I’m working on a design. Have you seen http://code.google.com/p/clock-tamer/ ? It can provide precision 52 / 64 MHz (and a lot of others) and can also integrate a GPS receiver to lock itself to the 1 pps. T

Re: [Discuss-gnuradio] External clock source Info?

2010-08-17 Thread Per Zetterberg
Gregory Maxwell wrote: On Tue, Aug 17, 2010 at 3:10 PM, Mark J. Blair wrote: On Aug 17, 2010, at 2:24 PM, William Pretty Security Inc wrote: It seems that 52MHz /64MHz precision clock references are like hen’s teeth, so I’m working on a design. What I need to know is what sort of leve

Re: [Discuss-gnuradio] External clock source Info?

2010-08-17 Thread Mark J. Blair
On Aug 17, 2010, at 2:24 PM, Gregory Maxwell wrote: > I'd also like to echo the 10MHz comment. GPSDOs Clocks with excellent > long term stability show up at fairly low prices on ebay all the time > (excess from cell site deployments, I assume). I have a couple of > them. What they don't usuall

Re: [Discuss-gnuradio] External clock source Info?

2010-08-17 Thread Gregory Maxwell
On Tue, Aug 17, 2010 at 3:10 PM, Mark J. Blair wrote: > > On Aug 17, 2010, at 2:24 PM, William Pretty Security Inc wrote: >> It seems that 52MHz /64MHz precision clock references are like hen’s teeth, >> so I’m working on a design. >> What I need to know is what sort of level is the USRP1 looking

Re: [Discuss-gnuradio] External clock source Info?

2010-08-17 Thread Mark J. Blair
On Aug 17, 2010, at 2:24 PM, William Pretty Security Inc wrote: > It seems that 52MHz /64MHz precision clock references are like hen’s teeth, > so I’m working on a design. > What I need to know is what sort of level is the USRP1 looking for ? Is it > 3.3V CMOS ? > > Once I get the design worki

[Discuss-gnuradio] External clock source Info?

2010-08-17 Thread William Pretty Security Inc
Hi All; It seems that 52MHz /64MHz precision clock references are like hen's teeth, so I'm working on a design. What I need to know is what sort of level is the USRP1 looking for ? Is it 3.3V CMOS ? Once I get the design working, I'll make them available at a reasonable price J Bill