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1

There are three receive gain stages in the HackRF one. Two of them are on the MAX2837 chip (the ones controlled by "LNA gain" and "VGA gain"), and the third is the MGA81563 preamp, which is either on (+14dB) or off (+0dB), and controlled by the "amp" toggle. You have indeed blown the MGA81563. I did the same thing to one of mine ...


2

Do you mean you want to put your phone and a small SDR in a faraday cage together such that the SDR only receives the phone’s emissions? If so, a metal lunch box should work for everything except the power and data cables. Heavy RF choking of the cables just outside the box entry would take care of common mode current but you may face other RFI issues from ...


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