This makes the receiver much more sensitive by activating only the lower peak coil. You locate position is standing up straight, keeping your eyes and ears open. In differential mode, there are two distinctively different sounds when the receiver is on each side of the target line. When crossing a road or other hazardous areas, the operator can listen for the sound to change rather than watching for the arrows on the receiver display to change direction. Grounding is very important for signal return.
Frozen ground acts like an insulator.
The ground probe should always be below the frost line. Copyright 1999, The Electricity Forum. All rights reserved.