But to know the margin to limits you need a way to calibrate your measurement system. The system is not just the TinySA. It includes the antenna as well. This is why several people have recommended getting a scan at a registered test lab. You will then know your margin to the limits, so you can then hopefully correlate your measurements to that. It is not perfect, but I don't think there is any other way to get started.
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Have you taken a product through the process before? There are multiple standards that cover more than just radiated emissions.
