The triple antennae configuration provides push-button depth accurate up to 15 feet and works in a peak, pin-point peak and null modes when used with a transmitter.  Renting this cable locator will make the job easy when trying to locate a broken line, or utilities.  2 active frequencies (512 Hz & 82 kHz or 512 & 33kHz) allow accurate tracing.  Simple to operate, the ergonomically designed and balanced 8873 receiver pinpoints inspection cameras, and Sondes in nonmetallic conduits in a peak mode. A large backlit digital display provides both relative and actual signal strength while a variable tone pitch gives an audio indication to the signal.

Here are a couple of videos from the manufacturer to help explain how to use the cable locator.  We do not have a sonde available to rent with this unit.  The model we rent is the 8873.