The PIEPS DSP SPORT is a 3-antenna transceiver with integrated mark function for ease of use in a companion rescue. Send - Search - Mark. Easy to use with only one button for user friendly interface. Digital Signal Processing provides the maximum circular receiving range in all directions from the searcher. Search strip width is 45 meters in all directions. 3-antennas allow exact pinpointing of the victim during the fine search phase. DSPSPORT has iProbe Support. Mark function support in multiple burial scenarios. OLD DEVICE DETECTION: Older beacons have a continuous signal that can cause a negative effect on the MARK function. The DSPSPORT recognizes these signals and indicates them so the rescuer can read the signal accurately. Updateable to the latest firmware at PIEPS Service Centers nation wide.