posted 11-06-2006 10:44 PM ET (US)
Thanks Andy, makes sense to me.Supposing I went with a Lowrance radar -- I see they have five models. The top two are pretty obviously more than I need for my boat. The other three, from low to high, are described as:
-- LRA-1000: 2 kW, 1-foot radome module, 7-degree horizontal beamwidth, 25-degree vertical beamwidth, up to 16 nm range
-- LRA-1500: 2 kW, 1.5-foot radome module, 4.7-degree horizontal beamwidth, 25-degree vertical beamwidth, up to 24 nm range
-- LRA-2000: 4 kW, 2-foot radome module, 4-degree horizontal beamwidth, 25-degree vertical beamwidth, up to 36 nm range
Obviously as you spend more you get better resolution, and the highest of these three also puts out twice as much power. But I'm wondering what other reasoning process one might apply to choosing one of these for a given boat.
Is it really relevant to see out to 36 nm? I'd think I'd usually be looking a couple of miles ahead at most. For what it's worth, nearly all of my boating so far has been near-shore along the mainland within about 10 miles of my marina, but in time I may be venturing offshore to islands 25 miles or more off the mainland.
My gut sense would be to go with "one up from the bottom-of-the-line model," meaning the LRA-1500, but is there some other logic to apply here?