[Discuss-gnuradio] harmonics at 19Khz, 38Khz etc pure tone Transmit

[aseem wadhwa]

Hi,

I'm using usrp2 with WBX daughterboard. I'm transmitting a constant signal
1+j*0. I want to measure the power of the signal at the receiver. But if I
look at the fourier transform of the received signal (baseband), in addition
to the DC component I find several harmonics at frequencies 19KHz, 38KHz,
57KHz etc upto around 100KHz. This is happening at whatever carrier
frequency I transmit, I've tried between 400Mhz-2GHz. What could be the
reason for this ? 
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