I did post previously here only once before about a porblem sending packets
between a USRP B210 and a hackrf. The problem I nticed does not lie in the
packet endocders/decoders, but in the actual reception of the signal to
begin with:
https://www.youtube.com/watch?v=kZTo8-32mIg

Please note the following:

1- I tested both of the USRP and HackRF for FM reception coming form local
stations, and the results were positive. I was able to save WAV files and
so forth.

2- I tried to transmit a wav file from the usrp to the hackrf (using NBFM
blocks), nothing shows on the fft or scope plots in terms of the desired
frequencyl, I could only detect extra added noise at the receiver side when
my usrp is transmitting.

3- I then tried to send a simple sinusoidal wave at the same frequency
fromt eh usrp to the hackrf, again, the fft doesnt show any detected signal.

Your help is greatly appreciated.

Thank you,
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