Hi Terry,
Its is a bit more complex
When sending a 5.34GHz signal into the tinySA Ultra you can calibrate the "harmonic step" e.g. the change in sensitivity when the mixer goes to hamonic mode.
With this calibration done the level calibration should be good (within the constraints as specified in the wiki) up to 6GHz.
Above 6GHz there is currently NO level calibration present.
However, if you have a signal source above 6GHz with a known level you can create yourself a correction table that goes up to whatever frequency by "stealing" some of the 20 correction points in the regular ultra correction table and moving these points to higher frequencies. Do keep the frequencies in the correction table in sorted order otherwise the internal calculations will fail.
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For more info on the tinySA go to https://tinysa.org/wiki/