Couloir: "The newest member of the Ortovox family is the X1. . . . Unfortunately it is slow and sluggish to respond to changes in digital mode. The perception of sluggishness is due to the digital audio pulses only responding every other cycle, instead of every cycle like all other digital beacons. In reality, the beacon is rather busy inside with two microprocessors figuring out what direction to guide you, and how far away you are, but the delayed pulses make it seem slow. . . . When it first begins receiving it acts like an F1, a single antenna analog beacon with great range for obtaining faint, far away signals. Once you get within 30 meters it starts giving distance readings, and the green, center LED lights up when you have a good coupling with the flux line of the victims signal, sort of like the M2. . . .Once you get within 10 meters of the victim the X1 shifts to digital mode, giving both distance readings, and direction indications from thee LED's. At this point Ortovox recommends you move slowly, holding the beacon close to your body so you don't swing it too quickly through space. If you slow down sufficiently, it will guide you accurately to the pinpoint zone, where the direction lights are snuffed and you simply perform a grid search using distance readings to hone in on where to dig. . . .In a single victim scenario it doesn't get much simpler than searching with the X1."