I have the need to find a certain cable in a pack of cables (harness) (i would say about 200). they have not been marked. so i only know the start and the end, but i need to find where it goes in the walls. Is there a device where i can bring on a modulated signal (to eliminate noise from other data cables) and track it through thick walls? but also directly? i know some (expensive) FLUKE devices, but they only allow to trakc half a meter i think. Im not an expert when it comes to electricity and antennas. Is it possible to build such a device myself with a raspberry maybe? Has someone done this? Thanks for advice!
