Another option would be to purchase a small garmin 541 (I think it's a 541). It is a small plotter with Sirius weather capability. My buddy installed one on his rig so that he did'nt have to scrap his current electronics for a new suite. We dodged weather an overnight full of t-storms and the temp chart was quite accurate. The other benefit is you get Sirius Radio if your stereo is compatable.wish i had it by my Furuno is too old! Next boat will have it!