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From: | Sylvain Munaut |
Subject: | Re: [Discuss-gnuradio] GRC FFT Plot |
Date: | Mon, 3 Aug 2015 16:27:08 +0200 |
> I transmitted this -30 dB signal (Image 1) using a usrp: The spectrum > analyzer displays -50 dBm (Image 2) as its reading. My receiver end picked > up the signal with the same peak power at -30 dB (Image 3). I'm confused. > How do I convert the dB power in the GRC to the received signal of the > spectrum analyzer in dBm? How do I convert the Power (dB) of the FFT to dBW > or dBm? Just remove 20 ....
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