[Discuss-gnuradio] Different amplitude on two USRPs

[Jamie Wo]

Hi all,

I met a werid problem when receiving. When I ran 'rx_samples_to_file' example to receive signal from a signal source, e.g. radio station, on two USRPN210s, the amplitude of received signals are different, seen from gnuplot. 

Does anyone know why this happenes? I guess this is the problem of USRP, because I ran the same program, set the same parameters for 'rx_samples_to_file', receive the same signal source and the two USRP N210s were placed next to each other on the table. 

Is there a way to set USRP/daughterboard so that the received signals have the same amplitude on two USRPs or adjust other parameters in gnuradio/uhd to do that? 

Regards,

Jamie