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2kw, 24 nm radar Any good?

Old 07-27-2004, 10:05 PM
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Default 2kw, 24 nm radar Any good?

I know this is an opinion question but is this a good enough radar? I need a new radar, and well scratch has been a bit low, I have seen these raymarine ones for about a grand but are they worth it? I mean what am I giving up from a 3 kw or even a 4 kw besides 36 miles and 48 miles respectivly?

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Old 07-27-2004, 10:18 PM
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Default RE: 2kw, 24 nm radar Any good?

if you have it mounted on a smaller boat, then not much
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Old 07-27-2004, 10:24 PM
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Default RE: 2kw, 24 nm radar Any good?

this radar will be mounted about 15 feet (5 meters) above sea level on a 32 foot luhrs. sport fisher.
Also when mounting an antenna does it get mounted level? when at rest or what is expected to be level when under way?
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Old 07-28-2004, 06:40 AM
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Default RE: 2kw, 24 nm radar Any good?

I have the new Furuno 1723 2kw. My first radar unit. I was surprised the other day during a lull in the fishing. I was fooling around with the radar and saw some fast approaching targets. Looked around, no boats??? Turned out to be a flock of cormorants. Ended up experimenting a little and was able to mark individual birds at close range (maybe 1/4 mile) if they were several feet off the water. Flocks could be easily distinguished at much greater range (before they could be seen with the naked eye) even thought they often fly just over the waves.
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Old 07-28-2004, 07:37 AM
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Default RE: 2kw, 24 nm radar Any good?

More power is always better, but a good 2kw unit isn't really that different from a 4kw. I've got a SL72 and on short ranges (1/4 and 1/8) I can pick up ridiculously small targets. This helps a lot pulling into my creek with bad visibility. On 2 mile range, I leave the gain on auto and turn on "target expansion". This lets me pick up pound nets. These are basically sticks driven into the mud supporting a fishnet, about 30 or 40 feet of entangling mess. I've actually picked up storms at longer than 24 miles. From what I've seen of my buddy's 4kw unit, I wouldn't upgrade mine unless I was going to an open array.

What I'm really saying is, if you experiment with the radar when the visibility is good and you don't really need it, a good 2kw unit is plenty. My opinion is that Furuno, JRC, and Raymarine all make excellent radars, stay away from the others. My Raymarine has a rain filter that lets me see through the stuff if I need to and I can still pick up other boats. Try experimenting with the manual gain control too. Sometimes auto cuts the gain down too much. It's a great instrument, but it takes practice to really use it well. As to mounting angle, it's best to have a flat angle when running, that's when you need the accurate return from small targets.
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Old 07-28-2004, 07:48 AM
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Default RE: 2kw, 24 nm radar Any good?

Power output is not that critical. Remember that radar is line of sight just like VHF and so the range is limited by antenna heigt and the height of the target. What makes or breaks performance in a small boat radar is the width of the radar array(which determines the beamwidth and thus defines the ability to resolve small, close together targets) and the quality of the signal processing software. If your main objective is to be able to spot other boats and buoys on limited range settings of 1/4 to 6 miles, you will do just fine with that Raymarine unit or the equivalent Furuno units (which I like better). The key is to practice all the time in good wvisibility so you know how to tune the gain and sea state and read the screen.
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Old 07-28-2004, 08:15 AM
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Default RE: 2kw, 24 nm radar Any good?

2kw is very good. I have the Raytheon SL70 since 1997. No problems.
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Old 07-28-2004, 11:13 AM
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Default RE: 2kw, 24 nm radar Any good?

Save up and get an open array on that nice boat. Mounting height is the issue 15 feet is nice.
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