Has anyone ever looked at the timing consistency/behavior of the cheap RTL-SDR dongles? That is, if you feed a sine wave in and get the samples out via the USB interface, are there missing samples? What's the ADC clock look like? If you had two of them, and you determine the relative phase of them at some time t0, and you let it run for minutes, how far will it have moved?

I bought one awhile back from a company called NooElec as more of a novelty item than anything. But I can say it runs quite hot and if you tune to the 3rd harmonic of a 10 MHz reference it takes a while to thermally stabilize. In hindsight spending the extra 3-4 dollars for one with a TCXO would have been worthwhile. On Tue, Mar 7, 2017 at 4:08 PM, jimlux <jimlux@earthlink.net> wrote: > Has anyone ever looked at the timing consistency/behavior of the cheap > RTL-SDR dongles? > > That is, if you feed a sine wave in and get the samples out via the USB > interface, are there missing samples? What's the ADC clock look like? > > If you had two of them, and you determine the relative phase of them at > some time t0, and you let it run for minutes, how far will it have moved? > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. >