A broadband radar uses very low peak power, but is on all the time-at least these say they are FM CW, not pulse compression radars. Contrast that to a standard pulse radar, which uses high peak power but is off most of the time. Real numbers are that the BR24 quotes 17W; a Raytheon AD218 (2KW) quotes 28W. The advantage of broadband radars is just what they advertise-better target resolution and clutter suppression. And these seem most important for collision avoidance. Probably the range is not as good as the pulse radar, but I haven't found reports that go through it. And the power savings is still significant. Also using lower peak power is always good for longevity (heat, etc), even if the modulation adds complexity. I will also look closely when my old Raymarine bites the dust.