Gain was way too low
- The header H1 was not shorted on the board.
- This reduced the gain of first stage to only 2, while it wsmeant to be 101!
- I just opened the box and put back in jumper on this header.
- The gain slider for AD602 is at -1 dB, 1 dB below the unstability point.
- Earlier the slider was maxed out to 30dB, so we didn't know if we are close to optimum supression.
- Changes have been updated in the schematic.
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