Hi .... or you could see if somebody with it already in their free time related program would add a sound card or set of cards to the mix of devices they support.
Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Magnus Danielson Sent: Monday, November 26, 2012 2:52 PM To: time-nuts@febo.com Subject: Re: [time-nuts] Best phase detector / mixer for 100MHz? Anders, On 11/26/2012 10:45 AM, Anders Time wrote: > Thanks a lot guys for all the input! > The nist articles was a very interesting read. I have ordered the > minicircuits ZRPD-1 and will try to build the 2N2222A mixer to to see how > far that will take it. I probably also will build a low noise jfet preamp > to see if that will reduce the noise. But I probably have to go to build > myself a crosscorrelation system to be able to<-180dBc with confidence. Is > there any cheap way into cross correlation measurement, using high quality > soundcard for example? Or do I have to buy one of these big old expensive > dual FFT analyzers? If you can handle the frequency limitation of the audio-card, you can do that. Cross-correlation using FFT isn't that hard to achieve, and good FFT libraries exist. FFTW for instance and a handfull lines of code do it all. Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.