You can have the latest and greatest in smartphone technology, but if you don't have a signal in the middle of the woods, then your device will be rendered useless. This is why even after all these years, radio technology is still being used by many campers. Two-way radio systems are a great way to communicate with your campsite - especially when you're out hiking in the woods. Simply leave one device at the camp and take the other with you. Have friends along for the trek? Make use of both and you're guaranteed to feel safe and secure in case you get separated.