Thank you so much! You are absolutely correct! Of course, the scope was still set to the 10x probe endorsing to increase sensitivity on the TinySA.
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I am totally embarrassed now and feel sorry to have wasted your time. After re-calibration all problems regarding my questions have resolved.
Nonetheless, I was able to hand-calibrate the TinySA with a -20dBm sensitivity difference across the entire range.
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Thank you again
Lutz
