The PLL not locked error is just because you've (or someone) has asked for a frequency tuning on the device that isn't possible, so the hardware is saying "can't do that".
The GCD messsage is a warning. Given the message you should just have used an interpolation of 1 and a decimation of 2. Others can comment on the overall-sanity of your flowgraph. On 2015-09-17 14:43, Pedro Gabriel Adami 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. > > -- > Cheers, > > Pedro Gabriel Adami > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio [1] Links: ------ [1] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio [2] http://www.w7fu.com/index_files/Page774.htm
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