This is a low-cost receiver that is tuned to 50/60Hz and picks up the
electromagnetic wave when current is present in the cable. It will
detect loaded lines where most others fail, because of the advanced
receiver circuitry and precision wound antenna. Not only are low energy
signals or waves detected, but also some low impedance grounded faults,
underground transformers, and splices can be found. Operating the
receiver/antenna "gun" with or without headphones is very simple.
The AT-9X requires less than 1 amp load current to produce an locate 3
feet deep typically. The AT-9X comes complete with a soft foam lined
carrying bag designed for rugged protection of the instrument.