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A comment on RF Signal Generator. Parent comment

Re:RF Signal Generator by hughrr on Tuesday February 01, 2022 @07:12AM (#30161497)
The noise floor of the measurement receiver is terrible though so you really don’t know what the true performance is here.
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Re:RF Signal Generator by fsh on Tuesday February 01, 2022 @07:57AM (#30161823)
I don't see a resolution bandwidth in the plot. How do you judge the noise floor without that?
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Re:RF Signal Generator by hughrr on Tuesday February 01, 2022 @08:03AM (#30161866)
RBW is fixed at 1.75MHz on the HackRF. But it's the measurement setup as a whole (that is the measurement receiver). The noise floor of this measurement is represented by the visible noise floor at -70dBm. That's a combination of a number of factors. Plus the HackRF has poor dynamic range and only 8 bits sampling which is quite terrible.
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