I am using USRP N210 with CBX daughter board.
In the GNU radio I use USRP_source block followed by wx_gui_fft sink block.
I input a power of -60dB to the USRP.  The input power is measured using a
spectrum analyzer.

The RF gain in the source block is kept at 0 dB, sample rate of 25 MHz and
center freq of 2.4 GHz

But the fft block shows the power to be -40dB.
Could you please tell me why such a huge offset.


Abhilash B
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