There have been many discussions here about long mic cables picking up RF, etc. I do most of my recording as an "on location" in classical engineer. MIC cables are 100-130 foot lengths on reels and are run from the stage to my CR. I've had no problems with RF.
The other night a thing that I have tried to avoid at all costs finally occurred- and the overzealous stage crew rolled a loaded dolly (with hard 4" wheels) across my cables- twice! I am not sure if they damaged the cables, or if they are OK. Obviously I can check for continuity and the signal passing thru, but I am more concerned about possible damage to the shielding.
Is there at test that I can try at home? I don't want to find out at my next orchestral gig that the cables are now picking up extra hiss or radio.