ACR ResQLink 406 MHz GPS Personal Locator Beacon. With Optional 406 Link’s website Service. At 4.6 oz, the ResQLink weighs less than a couple of PowerBars. And topping at just 3.9 inches, it’s smaller than the cell phone in your pocket. Small and mighty, the ResQLink is a full-powered, GPS-enabled rescue beacon designed for anglers, pilots and back …