“TDR” or Time Domain Reflectometer, build and use this circuit.

This is a simple avalanche type, TDR ( Time domain reflectometer ) which allows you to analyze many different issues with coaxial cable. This is the first video in a small series. I will also cover DTF, or “Distance To Fault,” how to determine Impedance, using this TDR to check an oscilloscope graticule, looking for hidden barrel connectors, or “a splice,” and so on….

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