Hi, as far as I know, RTL-based dongles cannot deliver samples at 38.192 MS/s, they are limited to 2.4 MS/s.
Best regards, Carles On Mon, Apr 9, 2018 at 3:14 PM, PRIYANKA PRIYADARSHINI < priyankapriyadarshini...@gmail.com> wrote: > Hi, > > Thank you for your response, I got your point. But I need to know this: > > I want to receive a GPS L1 signal (1575.42MHz) and I studied that the > local oscillator of RTL-SDR has the intermediate frequency of > 3.57MHz-4.57MHz. So when the signal with this IF goes to ADC of SDR, I want > my ADC to sample this incoming signal at a sampling rate of 38.192MHz (as > per the requirement). But when I try to put this sample rate in RTL-SDR, it > starts dropping samples. I want to know that is there anything am I doing > wrong OR it is the limitation of my RTL-SDR. > > Thank you. > > On Mon, Apr 9, 2018 at 11:57 AM, Carles Fernandez < > carles.fernan...@gmail.com> wrote: > >> Dear Priyanka, >> >> According to https://www.rtl-sdr.com/about-rtl-sdr/ : >> >> The maximum sample rate is 3.2 MS/s (mega samples per second). However, >> the RTL-SDR is unstable at this rate and may drop samples. The maximum >> sample rate that does not drop samples is 2.4 MS/s, however some people >> have had luck with 2.8MS/s and 3.2 MS/s working well on some USB 3.0 ports. >> >> Thus, something between 2.0 and 2.4 MS/s would work for you. >> >> Maybe this paper could be of your interest, although it is a little bit >> outdated: >> http://www.cttc.es/wp-content/uploads/2013/09/Turning_TV_int >> o_GNSS_Rx1.pdf >> >> >> Hope this helps, >> Carles >> >> >> >> >> On Mon, Apr 9, 2018 at 11:38 AM, PRIYANKA PRIYADARSHINI < >> priyankapriyadarshini...@gmail.com> wrote: >> >>> Hi, >>> >>> I am trying to receive GPS signal using RTL-SDR with GNU Radio. I am >>> interested in L1 band of GPS signal (1575.42MHz). But I am confused about >>> my sampling frequency. What value should I choose as samp_rate in RTL-SDR >>> block of gnuradio? >>> >>> Thank you >>> Priyanka >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discussemail@example.com >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> >
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