Hello, I'm trying to run the flowgraph available on the website of John Petrich ( http://www.w7fu.com/index_files/Page774.htm). I'm using the RTL-SDR 2832U and I have already made the configurations to blacklist and fix the bugs of Ubuntu 14.04 LTS. But when I run the flowgraphs, these messages appear and I can't hear the FM station I choose. Generating: "/home/aluno/Downloads/RTL_WBFM_RX_QT_GUI_08262015.py" Executing: "/home/aluno/Downloads/RTL_WBFM_RX_QT_GUI_08262015.py" linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.010.git-27-g28fa5a12 gr-osmosdr v0.1.4-48-g86ad5842 (0.1.5git) gnuradio 3.7.8 built-in source types: file fcd rtl rtl_tcp uhd hackrf bladerf rfspace airspy Using device #0 Realtek RTL2838UHIDIR SN: 00000001 Found Rafael Micro R820T tuner [R82XX] PLL not locked! [R82XX] PLL not locked! INFO: Rational resampler has user-provided taps but interpolation (512) and decimation (1024) have a GCD of 512, which increases the complexity of the filterbank. Consider reducing these values by the GCD. Using Volk machine: sse4_1_64_orc INFO: Audio sink arch: alsa aU I'm not sure but I think that this "PLL not locked" and the INFO about Rational Resampler might be the problem. Can anyone help me, please? PS: I'm attaching the two flowgraphs from his website. Thanks a lot. -- Atenciosamente, Pedro Gabriel Adami

This is not an appropriate question for the USRP-users mailing list, since this list is about support for USRP devices made by Ettus Research, and NOT RTLSDR dongles. However, I see you've cross-posted to discuss-gnuradio, which is the appropriate forum. On 2015-09-17 14:43, Pedro Gabriel Adami via USRP-users wrote: > Hello, > > I'm trying to run the flowgraph available on the website of John Petrich (http://www.w7fu.com/index_files/Page774.htm [2]). I'm using the RTL-SDR 2832U and I have already made the configurations to blacklist and fix the bugs of Ubuntu 14.04 LTS. > > But when I run the flowgraphs, these messages appear and I can't hear the FM station I choose. > > Generating: "/home/aluno/Downloads/RTL_WBFM_RX_QT_GUI_08262015.py" > > Executing: "/home/aluno/Downloads/RTL_WBFM_RX_QT_GUI_08262015.py" > > linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.010.git-27-g28fa5a12 > > gr-osmosdr v0.1.4-48-g86ad5842 (0.1.5git) gnuradio 3.7.8 > built-in source types: file fcd rtl rtl_tcp uhd hackrf bladerf rfspace airspy > Using device #0 Realtek RTL2838UHIDIR SN: 00000001 > Found Rafael Micro R820T tuner > [R82XX] PLL not locked! > [R82XX] PLL not locked! > INFO: Rational resampler has user-provided taps but interpolation (512) and decimation (1024) have a GCD of 512, which increases the complexity of the filterbank. Consider reducing these values by the GCD. > Using Volk machine: sse4_1_64_orc > INFO: Audio sink arch: alsa > aU > > I'm not sure but I think that this "PLL not locked" and the INFO about Rational Resampler might be the problem. Can anyone help me, please? > > PS: I'm attaching the two flowgraphs from his website. > > Thanks a lot. > > -- > > Atenciosamente, Pedro Gabriel Adami > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com [1] Links: ------ [1] http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com [2] http://www.w7fu.com/index_files/Page774.htm