Broadband Radar: Chartplotter Compatibility - SailNet Community
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post #1 of 12 Old 07-05-2013 Thread Starter
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Broadband Radar: Chartplotter Compatibility

A Raymarine C70 Classic chartplotter and radar was on my 28 foot sailboat when I bought it last year. In terms of electronics, this is pretty old stuff, and I'm attracted to the new toys (have my eye on the new Garmin 741xs).

I also like what I read about broadband radar (4G), particularly for my usage pattern, but at the moment, it doesn't look like anyone but Navico is making them. I imagine that the other manufacturers are working on broadband technology, which brings me to my question:

If I were to purchase a new chartplotter (the Garmin 741xs, for example), and then Garmin came out with a broadband radar in a year or two, would it be likely that the chartplotter would be compatible? Or would an entirely new chartplotter likely be required?

I realize this is fairly speculative, but to some extent would be determined by how dependent the radar is upon the chartplotter to function (in other words, does the chartplotter run the radar, or does the radar basically do it's own thing independently, and just display the readout on the chartplotter?).
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post #2 of 12 Old 07-06-2013
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Re: Broadband Radar: Chartplotter Compatibility

Garmin already has a "Broadband" radar. It's basically plug and play with compatible units. The chartplotters control the functions of the radar. In the old days when radar was not interfaces with the chartplotters they did their own thing.
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post #3 of 12 Old 07-06-2013
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Re: Broadband Radar: Chartplotter Compatibility

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Garmin already has a "Broadband" radar. It's basically plug and play with compatible units. The chartplotters control the functions of the radar. In the old days when radar was not interfaces with the chartplotters they did their own thing.

Garmin has HD radar which is not the same as the Navico "broadband"....

As far as Garmin they are the best bet in marine electronics industry for not making stuff like domes & plotters obsolete when new stuff comes out... The 741XS is a very sweet unit and their HD dome is also excellent...

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post #4 of 12 Old 07-06-2013 Thread Starter
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Re: Broadband Radar: Chartplotter Compatibility

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Garmin already has a "Broadband" radar. It's basically plug and play with compatible units. The chartplotters control the functions of the radar. In the old days when radar was not interfaces with the chartplotters they did their own thing.
I was not aware that Garmin had a broadband (FMCW) radar. What model number are you referring to?
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post #5 of 12 Old 07-06-2013 Thread Starter
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Re: Broadband Radar: Chartplotter Compatibility

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As far as Garmin they are the best bet in marine electronics industry for not making stuff like domes & plotters obsolete when new stuff comes out... The 741XS is a very sweet unit and their HD dome is also excellent...
Good feedback, Maine, thank you. Do you think the circuitry in a plotter designed for traditional radar will even work with broadband radar? I'm worried that the technology is inherently incompatible, despite the best efforts of the manufacturer.
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post #6 of 12 Old 07-06-2013
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Re: Broadband Radar: Chartplotter Compatibility

I thought they referred to the same technology. Who make a broadband radar?
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Re: Broadband Radar: Chartplotter Compatibility

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I thought they referred to the same technology. Who make a broadband radar?
Currently, only Navico (Simrad/Lowrance/B&G) makes broadband radar (at least for small boats). Totally different technology. Simrad has a good YouTube video that describes the difference.

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post #8 of 12 Old 07-08-2013
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Re: Broadband Radar: Chartplotter Compatibility

This seems like article explaining the difference.

David Burch Navigation Blog: High Definition (HD) and Broadband Radar by Larry Brandt
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post #9 of 12 Old 07-10-2013 Thread Starter
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Re: Broadband Radar: Chartplotter Compatibility

I notice that the radar connection for the modern Garmin chartplotters is basically an ethernet connection, implying that the communication between the two is a digital data stream, which bodes well for future-proofness (as opposed to the analog connection of my current radar/chartplotter).
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post #10 of 12 Old 07-11-2013
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Re: Broadband Radar: Chartplotter Compatibility

Panbo should have writeups and discussions, too.

Stu Jackson, C34, 1986, M25 engine, Rocna 10 (22#)
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