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I am showing a very useful device for every radio amateur. It is used to check the serviceability of the vast majority of radio components: field and bipolar transistors, diodes, capacitors, resistors, inductors. You will literally see how to use it. Calibration and testing of the device parameters is shown. #radio amateur #radio engineering ----------------------------------------------------------------------------------- Device diagram https://i.postimg.cc/8cLxKF5Y/GM328A.jpg Device characteristics https://i.postimg.cc/SRYvXnCs/image.jpg Capacitor ESR table https://i.postimg.cc/BnSRpnGh/ESR.jpg