Greetings to all!

I am a very new GNU Radio user.

For now I am trying to get simple example with spectrum analyzer.

I am encountering problems with understanding the result of the results I get. I am attaching to screens - one for the schematic and one for Qt FFT block result.

As for now I do not understand - why do I get some strange -15dB value on spectrum for I am using a simple gen with 1 volt amplitude. And how to customize the y-scale correctly.

I hope if anybody can help me with this and clarify those questions.

Thank everyone in advance.

Alex

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