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Radar Antenna weights? 4ft array?

Old 10-12-2008, 06:39 PM
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Default Radar Antenna weights? 4ft array?

What are the weights of the 4ft array for:
1. Garmin
2. Lowrance
3. Raymarine
4. Furuno

I am looking for he lightest weght, antenna and array?
Does anyone have any knowledge on the above...or is thier a lighter antenna and motor that I haven't mentioned?

Thanks in advance,
Bobby
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Old 10-12-2008, 06:57 PM
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Default RE: Radar Antenna weights? 4ft array?

Although weight is important, compatibility might be more important. What kind of electronics do your have now? Can you just add a radar to existing? What kind of space is available for mounting? Will a few pound mean that much in the long run?

I assume you are adding and not building a new system, but if it is a new system go with what you like as far as ease of use/features you will use. I think you will find the weights are not that differn't.
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Old 10-12-2008, 07:26 PM
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Default RE: Radar Antenna weights? 4ft array?

Did a little homework:

Garmin 54 lbs 48" 4KW pedestal and antenna

Furuno 50 lbs 42" 4KW gearbox and antenna

Lowrance 48.3 lbs 45" 4KW gearbox and antenna

Raymarine 66.2 lbs 48" 4KW pedestal and array



Although the RM is the heaviest, there is certainly no "Light weight" in the group.
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Old 10-12-2008, 07:43 PM
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Default Re: Radar Antenna weights? 4ft array?

If your worried about weight maybe you should think about a dome instead of a open array.
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Old 10-12-2008, 08:03 PM
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Default Re: Radar Antenna weights? 4ft array?

I'll tell ya what, I thought about going with an array, but instead installed the Garmin 24" HD radom, MAN am I happy!! The Garmin HD radar is VERY VERY detailed. I'm seeing little tiny 6" plastic balls (crab pots in the bay), I'm seeing birds, I'm seeing everything. I'm REALLy happy with the 24" HD dome. I used to have the Ray 18" dome in comparison.

Another consideration besides weight is, the size. The size is what made my decision, not to mention $$$$$
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Old 10-14-2008, 04:20 PM
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Default Re: Radar Antenna weights? 4ft array?

the lra 2000 lowrance kicks . it has great overlay , picks up crab pot bouys birds ect and alot lighter than a open aray .

I dont have the new hd digtal lowrance and I love mine you would think the new hd is better ?

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Old 10-15-2008, 12:14 AM
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Default Re: Radar Antenna weights? 4ft array?

You guys who are so happy with your domes must not have spent a lot of time using a radar with a big open array. The domes are fine for general close-in navigation, seeing other vessels and buoys and similar targets when seas are relatively calm. If you need to see birds 2-3 miles away or deal with lots of traffic in rougher conditions, the big arrays become very much worth the difference in price. The digital filter technology of the "HD" radars makes them simpler to operate and cleans up the picture nicely, but there is no way around the laws of physics. A small dome just cannot achieve the resolution of a large open array because the beam width is inversely correlated with the width of the array -- so wider array means smaller theorectical beam and greater resolution.

I am not saying people should not get domes if that meets their needs, just that a quality large array will always have more capability than a small dome.
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Old 10-15-2008, 09:26 AM
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Default Re: Radar Antenna weights? 4ft array?

Nomans - 10/15/2008 3:14 AM

You guys who are so happy with your domes must not have spent a lot of time using a radar with a big open array. The domes are fine for general close-in navigation, seeing other vessels and buoys and similar targets when seas are relatively calm. If you need to see birds 2-3 miles away or deal with lots of traffic in rougher conditions, the big arrays become very much worth the difference in price. The digital filter technology of the "HD" radars makes them simpler to operate and cleans up the picture nicely, but there is no way around the laws of physics. A small dome just cannot achieve the resolution of a large open array because the beam width is inversely correlated with the width of the array -- so wider array means smaller theorectical beam and greater resolution.

I am not saying people should not get domes if that meets their needs, just that a quality large array will always have more capability than a small dome.

I do agree but power is the keyin some cases .however when weight is a issue a dome may be the best choice . now if want to see birds you really need a open array of 6kw or better 4k open will not cut it . and thats the resone I did not go to a open array . I needed 24 volts to run a 6kw vs 12 volts for a 4kw . I saw no real benefit of a open at the 4kw level . in fact my dome seems to pick up better then a E120 with a 4kw open aray , and thats per the owner of the E120
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Old 10-15-2008, 07:28 PM
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Default Re: Radar Antenna weights? 4ft array?

Scuba Steve helped with this info...

First off here are the approximate weights (shipping weights):
Furuno Navnet 3D 6kw 4' array - 76 lbs
Furuno Navnet 3D 4kw 3.5' array - 84 lbs
Garmin 4' Array & GMR Pedestal - 18.6lbs + 68 lbs = 86.6 lbs
Raymarine 4kw 4' Array & Pedestal - 87lbs
Lowrance 4' Array & Pedestal - 17.1lbs + 45lbs = 62.1lbs

Thanks Steve..

I will take the dome under consideration, but my research was for building a new network...and wanted to research which gps component I wanted to start with. Since then, I have been able to do a soft reset to my older version Lowrance, clean up the waypoints add the new ones I had recieved....so my new network might be delayed. I still worry about this older Lowarance 5000C and wonder if it about to go. If it does, I wanted to know what direction I wanted to go. My boat is 23 ft, T-top is built like a brick house and might hold 80lb (boat builder states, but I had hoped I could find one less).... I had found a Garmin shipping weight that lead me to believe it was actually less than what it really is.

Thanks for the help.



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