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Poor 30 Mhz reading after calibration


 

Hello everyone,
I calibrated my new tinySA after it successfully passed all self tests. After the calibration finished (without any indication of a problem), I fed the 30 Mhz calibration generator signal to the low input to check if everything is ok. The reading was -27.4 dB @ 30.2 Mhz, and I think that's a bit to low to pass as ok.
Is there anything I can do about this?
As to the question if my unit is genuine, I am not 100% sure. I made my purchase before becoming aware of the clone issue, and the place I bought it from? is not among the licensed vendors according to the wiki. On the other hand, the back plate checks out, but I guess it still could be fake.
I highly appreciate any suggestion how to proceed.

I wish all of you a nice day!
Matthias

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