Pray your life doesn't depend on you transmitting consistently or changing channels quickly on this unit. I'm not a idiot when it comes to electronics - this one has me very frustrated. Finding your way from 16/9 to a Wx channel is not a single step. Changing back to a working channel from a Wx channel is not as simple you would hope either. A fellow boater purshased on of these than hurled it to the bottom of the lake in frustration. Mine may be close behind. The PTT (transmit) button seems to be touchy - it would not transmit consistently. I programmed a Cobra handheld for a friend of mine (because he is a self-admitted electronics idiot) and found that unit much more user friendly and it appears to be a little more rugged than this unit.