How do we measure depth with sound?  The basic analogy is shouting from a mountain top and listening for your echo.  We shout into the ground and listen for our echo.  We do more than just listen, because we use a stopwatch to time how...

In a recent conversation with a client, they mentioned that they are regularly called out on an “undetectable” locator ticket.  What is this "undetectable" stuff?  To them  “undetectable” means something like “unable to locate the structure using standard electromagnetic devices”. In many of these cases...

What is acoustic locating? According to Wikipedia: “Acoustic location is the use of sound to determine the distance and direction of its source or reflector. Location can be done actively or passively, and can take place in gases (such as the atmosphere), liquids (such as...

Why is it that water affects some underground  locating tools differently than others? Water affects these because of its chemical structure.  Water consists of 2 hydrogen atoms stuck to the much larger single oxygen atom (thus H2O).  The hydrogens hang out on the same side of...

Demo Days at Cartacoustics are a time where we show off ASTlive! at our shop. We meet in the conference room for introductions and an overview of acoustic locating and the ASTlive! product. Then we head outside for a couple of point collections that show...