Marine Electronics Forum - Simrad Radar 3G, 4G or DX64S

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View Full Version : Simrad Radar 3G, 4G or DX64S

03-22-2012, 06:04 AM
I am looking to outfit my boat with a radar, I know Simrad has some rebates going on with the 3G & 4G, so I am leaning towards one of them, but can anyone explain what the DX64S would offer over the G's? Is it better?

As much as I would like to have a radar that can "find birds" i know open arrays are the only way to achieve that and even with the OA its not cut and dry.

It will be used primarily for running at night and in fog.

IIf anyne can shed some light on the difference between the Radars I would greatly appreciate it.

03-22-2012, 06:21 AM
Have you seen this page? -

The 4G is basically the same as the 3G, with a few improvements (slightly better range, seperation, etc...).

If you download the booklet from that page, there's a little chart in there that kind of goes over when you may want one type of radar over the other.

For what you need, I think the 4G would fit the bill. (BTW, the DX64X is still a dome, not an open array - it sounded like you may have implied that it was.)

03-22-2012, 06:33 AM
thanks for the link, i realize the DX64 is a dome, just didnt know how it was different over the 3&4G

03-23-2012, 09:04 PM
Any other input on these radars?

03-24-2012, 05:20 AM
Here is a great series that Ben did over at Panbo. It's a bit older so it doesn't have the 4g in the test, but it's worth reading anyhow.

He has 4g reviews as well. Browse the site.

03-24-2012, 08:09 AM
The 3G and 4G radars are optimal for what you say are your requirements - Close in navigational guidance in dark and fog.

Pulsed radars are lower in range resolution than the broadband radars. They also have a much larger "deadzone" around its ownship for processing targets, thus it cannot see targets close to itself.

They are not as RF safe as the broadband radars either. The average power of the broadband are very low due to their waveform design (FM/CWI)and are closer to a cell phone than to other pulsed radars.

The broadband radars, in conjunction with a heading sensor enabling radar overlay to the GPS chartplotter are ideal for recreational and small commercial operators. They operate automatically very well. They allow seeing targets within 20 feet of your gunwales/bowrail. They automatically select the same range you are viewing your GPS/chart info on. With proper calibration, they register with the charts orientation incredibly well.

Looking for birds at range? You are right that an Open Array with 6KW power is more what you need. Need to see small targets at the longest range possible (perhaps SAR or coordinated fishing or diving operations) HD/OA/Pulsed radars maybe more what you need.

Keeping off the rocks, moored/anchored boats, ATON's, land areas, docks int he dark and fog, the broadbands do a wonderful job.

By all means, follow the link mentioned earlier to get a more complete answer.

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