Fluke do not provide this information in any Intellitone product literature, however, it is generally assumed that a tone generator and probe kit should be able to trace copper cable runs up to 10 miles in length with more powerful generators being able to trace further. Different parameters will affect this distance such as depth/density of material that you are tracing cable through, good connection and so on. I am unable to comment on cable tracker distance as this will depend on the manufacturer's specifications.