The Nano's TDR function can show 'defect' location - even multiple "feature" locations. It shows distance in meters. You move the cursor to the "odd spot" in the trace, and read the distance to there. That works well, but the start and stop frequencies must be correct for the distance range that you want, and you must set the cable velocity factor.
There is a good video on using the nanovna to measure coax length, by W2AEW, on youtube. That method will also show any fault or discontinuity location (distance, in meters).
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Doug, K8RFT
