GNU Radio 3.9 中的 RTL-SDR

如何解决GNU Radio 3.9 中的 RTL-SDR

我正在尝试使用此流程图让 rtl-sdr 通过 GNU Radio（使用 Ubuntu 20.04）接收 wbfM：

GNU Radio flowgraph

但是当我执行时，它给了我这个错误信息：

gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp 
Using device #0 Realtek RTL2838UHIDIR SN: 00000001
Found Rafael Micro R820T tuner
[R82XX] PLL not locked!
Exact sample rate is: 2000000,052982 Hz
[R82XX] PLL not locked!
Traceback (most recent call last):
  File "rtl_sdr_receive.py",line 270,in <module>
    main()
  File "rtl_sdr_receive.py",line 246,in main
    tb = top_block_cls()
  File "rtl_sdr_receive.py",line 187,in __init__
    self.connect((self.rtlsdr_source_0,0),(self.rational_resampler_xxx_0,0))
  File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py",line 37,in wrapped
    func(self,src,src_port,dst,dst_port)
  File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py",line 100,in connect
    self.primitive_connect(*args)
TypeError: primitive_connect(): incompatible function arguments. The following argument types are supported:
    1. (self: gnuradio.gr.gr_python.hier_block2_pb,block: gnuradio.gr.gr_python.basic_block) -> None
    2. (self: gnuradio.gr.gr_python.hier_block2_pb,src: gnuradio.gr.gr_python.basic_block,src_port: int,dst: gnuradio.gr.gr_python.basic_block,dst_port: int) -> None

Invoked with: <gnuradio.gr.gr_python.top_block_pb object at 0x7fae1b571af0>,<Swig Object of type 'gr::basic_block_sptr *' at 0x7fae1740c9c0>,<gnuradio.gr.gr_python.hier_block2_pb object at 0x7fae19809770>,0
swig/python detected a memory leak of type 'gr::basic_block_sptr *',no destructor found.

我使用的是 GNU Radio 3.9 版本，因为它是唯一一个与 rpitx（使用 TCP 连接）配合使用的版本。但它似乎在处理 rtl-sdr 时遇到了麻烦。这是软件错误还是我配置错误？已经尝试从 PPA 和源代码安装 GNU Radio 3.9，最终结果相同。