Mode-S Beast:Hardware Failure Diagnosis

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Troubleshooting and Failure Diagnosis

With the experience of several devices made by users, this chapter should give a basic error diagnosis.

Enhanced Protection Against Static Electricity from the Antenna

Replace the 4k7 resistor (marked 472) directly at the SMA connector by a small coil, 3 turns on a 2 mm core.

Broken Amplifier

You should check the voltage of around 3.2 V at both points marked here with arrows. At all broken MMICs that I have seeen this was clearly different.

MMIC Voltage