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Stick to the schematic | EDN

http://www.edn.com/electronics-blogs/tales-from-the-cube/4327012/Stick-to-the-schematic?_mc=sm_edn&hootPostID=f8a02d5d2d8a2361a5acbc3aa83412e8 Nice story on debugging RF circuit… “I could get any manner of triangle distortion or offset depending on where I touched. A finger presents an impedance of approximately 100 pF in series with approximately 100Ω to ground, and this condition loads and modifies oscillations”