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Simrad Radar

Old 07-21-2013, 12:18 PM
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Question Simrad Radar

Looking to buy a Simrad electronics Package & I want to know the difference between the broad band & the HD radome.I have a fold-down survey tower, andSimrad said that with broadband I would get some interference from the poles of the tower,and with HD,they have a 18yd buffer built in them so know interference with the screen.Is that a quality radome,can I still overlay with the GS25 and would it be a better system??
Old 07-21-2013, 03:44 PM
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Originally Posted by doradorick View Post
Looking to buy a Simrad electronics Package & I want to know the difference between the broad band & the HD radome.I have a fold-down survey tower, andSimrad said that with broadband I would get some interference from the poles of the tower,and with HD,they have a 18yd buffer built in them so know interference with the screen.Is that a quality radome,can I still overlay with the GS25 and would it be a better system??
I'm not certain about Simrad but both Garmin and Raymarine use the (xHD & HD respectively) definition to designate their systems that have the faster/stronger processors. And with both of them Garmin and (Raymarine) you can still overlay the radar image over the GPS plotter. So yes, FWIW, I think it would be a better system.
Old 07-21-2013, 03:48 PM
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I have no first hand experience with Simrad radars, but the broadband radars seem like they start to lose their ability to pick up stuff at 3 miles + out from what I have read. I have also heard they have a hard time picking up fiberglass at 2 miles out. I personally think the HD radar is better with a narrow horizontal beam width on an open array. It has a lot more range and picks up targets further out.
Old 07-21-2013, 08:08 PM
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Originally Posted by Navatech View Post
I'm not certain about Simrad but both Garmin and Raymarine use the (xHD & HD respectively) definition to designate their systems that have the faster/stronger processors. And with both of them Garmin and (Raymarine) you can still overlay the radar image over the GPS plotter. So yes, FWIW, I think it would be a better system.
Thanks for the info.What does FWIW mean?
Old 07-21-2013, 08:13 PM
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Originally Posted by wandoboater123 View Post
I have no first hand experience with Simrad radars, but the broadband radars seem like they start to lose their ability to pick up stuff at 3 miles + out from what I have read. I have also heard they have a hard time picking up fiberglass at 2 miles out. I personally think the HD radar is better with a narrow horizontal beam width on an open array. It has a lot more range and picks up targets further out.
Thanks for the feedback,With all this technology it's easy tor us old schools to get lost in the jargin.
Old 07-21-2013, 08:20 PM
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Originally Posted by doradorick View Post
Thanks for the info.What does FWIW mean?
FWIW=For What It's Worth
Old 07-22-2013, 01:27 AM
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Originally Posted by wandoboater123 View Post
I have no first hand experience with Simrad radars, but the broadband radars seem like they start to lose their ability to pick up stuff at 3 miles + out from what I have read. I have also heard they have a hard time picking up fiberglass at 2 miles out. I personally think the HD radar is better with a narrow horizontal beam width on an open array. It has a lot more range and picks up targets further out.
So why do you post about the BroadBand radar limitations when you don't have any experience with it? If you follow this forum you should know there are loads of people with 3G and 4G BroadBand radar here. The original BR24 BroadBand radar which was replaced by 3G for more than two years ago had some range limitations. The 3G is somewhere between a 2kW and a 4kW when it comes to max range and long range detection, the 4G is on par with a 4kW pulse radar when it comes to max range. There was a guy posting a screen shot here at THT a few weeks ago showing the 4G with very solid detection of land at 36 nautical miles (>41 miles).

The HD pulse radars from Simrad are solid performers. You will get the same functionality when it comes to radar overlay and MARPA from the HD radars as from the BroadBand radar. I think the the 4kW version is the only HD dome available from Simrad now now, but this is the one I would recommend anyway, both due to power and the slightly narrower horizontal beam. In a normal installation I would recommend a 4G BroadBand radar, but if Simrad is recommending HD instead of BroadBand due to the obstructions on your boat you should follow their advice.
Old 07-22-2013, 02:08 AM
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I just upgraded from the BR24 to 3G and am still getting used to it. But it is a very big difference; I've had it out 3-4 times and so far have noticed much more sensitivity/distance abilities. We were picking up condos from at least 13-14 miles out, maybe a little further. I initially thought they were storm cells on land because the BR24 didn't pick them up nearly that far out.

Storm cells are picking up waaayyy further out than I expected. I would say at least 20 miles but probably further as that was all I watched for. I'm not certain how far other boats are showing up but at least 2-3 miles, maybe 4 depending on size.
Old 07-22-2013, 06:06 AM
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The broadband radar operates completely differently than a standard radar. It does pattern matching of a varying frequency signal. Traditional sends out a single frequency pulse. To make sure traditional radar isn't detecting its initial output they set up a dead zone where it doesn't detect anything inside this initial main bang zone. The broadband radar doesn't have this problem so it starts detecting immediately. It's an all around better radar. I wonder why Navico hasn't implemented a main bang setting to widen this around nearby obstacles.
Old 07-27-2013, 06:12 PM
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thanks for all the Info
Old 07-27-2013, 06:35 PM
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I have both the 4G and 6KW open on my boat and both are very good.
The 4G is very powerful compared to my old 3G.
Old 07-27-2013, 07:58 PM
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CaptJeffg -

if you could keep only one, which one would it be? I guess what I'm trying to figure out is how close to the performance of the open array does the 4G come? I mean, other than detecting birds at 156 miles and storms three days in advance, is the open array significantly better than the 4G for routine, typical non-commercial use? What about the 4G's ability to detect small objects and objects that are very close? For those, is the 4G noticeably superior?

Just trying to decide on whether to upgrade to a 4G. Sorry, I hope this isn't hijacking the thread too badly.

Thanks,
Old 07-27-2013, 08:46 PM
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Lets put it this way,,,,my open array doesn't spin very often.
Not to take anything away from it. It's very powerful but I know where land is and I have no need to see it from 30 miles offshore.
I do need to see that buoy or log when I'm running down the ICW at night. The 4G can see a person standing on the bow of my boat and a Pelican in the water 20 feet away.

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