Instant GPS for Chart Plotting
Bad Elf (bad-elf.com) has two mini GPS products that can deliver GPS accuracy to within nine feet to chart-plotting devices. The tiny model 1000 plugs into the USB port of most laptops as well as iPads, iPhones or iTouch devices and is ready for use. No setup, no cables, no batteries to charge, no problems. It performs better than using limited range cellular-based GPS. It's great for delivering positional information to marine charts or most any data chart program, and it's just $100. The Bad Elf GPS 2200 ($130) palm-size device, not much larger than a key fob, connects wirelessly via Bluetooth to allow apps to read your current position. The 2200 works with many computers, tablets and other devices and operates with about 40 popular charting systems, including C-Map and Navionics.