What is MPS?
Multi Period Sensing, as offered on some of the Minelab metal detectors, is a variation on pulse detector technology. Most common detectors transmit and receive their signals continuously, and amplify the distortion caused in the electromagnetic field they generate around their searchcoil as a signal to the operator. Pulse detectors operate differently. They transmit, pause, and then receive, in a rapidly repeating fashion. They induce small electrical currents into metal items within range, and while in the receive mode pick up this electrical current before it fades. These types of detectors are fairly impervious to the effects of salt water and mineralized ground, and therefore are most commonly used as diving detectors. Minelab has modified this technology for use in the goldfields and in areas of exceptional mineralization these machines can outperform any others on the market today. The reported depths at which large nuggets have been found in areas that other detectors have fail
