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I'm looking for some sort of simple and a beginner level instructions on how to build TX/RX loopback flowgraph using GnuRadio software and B200 USRP with an attenuator FW -10 + 10dB. Kindly, help me with any available examples/resources you have.

Update: What I meant by a loopback here is a simple flowgraph that has both: a transmitter and receiver, to transmit a signal and receive it by connecting the TR port to the RX on the USRP device.

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    $\begingroup$ Hi Hadad, welcome to Amateur Radio SE. Your question is very broad. Please elaborate, what research have you already done, what have you already found? $\endgroup$ Jul 8 '19 at 5:18
  • $\begingroup$ Can we see the flowgraph? $\endgroup$
    – mike65535
    Jul 8 '19 at 12:50
  • $\begingroup$ @mike65535, That's what I'm looking for! $\endgroup$
    – Hadad
    Jul 8 '19 at 12:58

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