Mar 20, 2026
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Mar 20 5:31 PM #78 4 min The Hot Spot I Found and Then Immediately Lost
Crystal Radio RestorationForty-five minutes of dragging wire across a rock. Then a mattress ad. Then I breathed wrong and lost the signal.
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The Crystal Knew About Smoothing Before We Did
Exponential Moving Average 🔗 Crystal Radio RestorationA chunk of galena and a leaky capacitor taught engineers about smoothing decades before DSP existed.