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Old 02-06-2010, 01:58 PM
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Default New electronics..Furuno Navnet questions

Going with the Navnet 3d. I have enough room for either twin 12" MFDs or a single 12" MFD and a dedicated fishfinder like the FCV 295. Other electronics will include Icom 504 vhf or Simrad AP 16.

Questions are....

1. 4kw dome vs 6kw open

2. Twin 12" MFDs with dff 1 avs single 12" MFD and dedicated fishfinder FCV 295. Transducer will be Airmar B260 1kw for either setup.

3. Is an RD 30 useful with a 3d like it was with the Navnet VX2 for quick temp, position, speed etc???

Fishing inshore/offshore out to 600'.

All experienced Furuno related input would be appreciated. I do not want to discuss any other brand.
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Old 02-06-2010, 07:28 PM
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I have been thinking about doing the exact same set up on my next boat and I think I am going to go with one 12" MFD and the FCV 295. With the money you save getting the 295 over another 12" MFD and the DFF1 will allow you to pay for the 6kw open array which I would go with over the 4kw dome if the top can handle the weight. Also something to consider if you ever decide to change your transducer to handle 2 or 3kw in the future, the FCV 295 can already handle up to 3kw's where the Navnet 3D mfd would require you to upgrade to the DFF3 which is right at $2k if I remember right.
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Old 02-06-2010, 08:13 PM
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Originally Posted by T-bone123 View Post
I have been thinking about doing the exact same set up on my next boat and I think I am going to go with one 12" MFD and the FCV 295. With the money you save getting the 295 over another 12" MFD and the DFF1 will allow you to pay for the 6kw open array which I would go with over the 4kw dome if the top can handle the weight. Also something to consider if you ever decide to change your transducer to handle 2 or 3kw in the future, the FCV 295 can already handle up to 3kw's where the Navnet 3D mfd would require you to upgrade to the DFF3 which is right at $2k if I remember right.

I had a Navnet3d with a DFF1 and ended up buying and installing a 585 next to the NN3D as I could not get used to using the DFF1. I was glad when I made the change. I have not used the 295 but will consider it for the next boat. I have a Garmin GHP10 Autopilot hooked up to the Navnet3D and they work well together using the NMEA 2000 port.
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Old 02-06-2010, 08:36 PM
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I just about to do the same thing. this is what i'm getting and why.
2x mfd12
1xdff1
1x drs6a
THe reasons for the extra mfd 12 are almost unlimited.
redundacy is number 1
one set as the fish finder (which means sounder on one side radar set for bird finding on the other.
the other mfd12 will be set up as navigation unit gps on one side and Radar in boat finding/land finding mode. since it sounds like you will only buy Furuno you probably understand that Furunos radar has dual beam so you can actually setup two independent radar screens. Really when you look at flexabiliy 2 mfd's give you and you've got the money just do it and don't look back

Dont forget the HUB101
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Old 02-07-2010, 04:07 AM
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Originally Posted by bens2 View Post
Going with the Navnet 3d. I have enough room for either twin 12" MFDs or a single 12" MFD and a dedicated fishfinder like the FCV 295. Other electronics will include Icom 504 vhf or Simrad AP 16.

Questions are....

1. 4kw dome vs 6kw open

2. Twin 12" MFDs with dff 1 avs single 12" MFD and dedicated fishfinder FCV 295. Transducer will be Airmar B260 1kw for either setup.

3. Is an RD 30 useful with a 3d like it was with the Navnet VX2 for quick temp, position, speed etc???

Fishing inshore/offshore out to 600'.

All experienced Furuno related input would be appreciated. I do not want to discuss any other brand.
This is from my experience as an owner of a NavNet 3D system for two seasons (I have some of the first units shipped), not from reading posts on the internet:

1) Go with the 6kW open array and never look back if you have space on hardtop. Fantastic target discrimination and you will see birds at 4-6 miles.

2) No reason to use anything but two MFD12s so you have full versatility in how to display. For example, if I need to use the radar, I will run one of mine full screen on radar and the other split half plotter/half sounder. If it is clear and I don't need radar, I run one full screen sounder and one full screen plotter. You could not do that switch if you had a dedicated sounder and one MFD12. The sounder display on the MFD12 full screen is very nice and the equal of the big Furuno dedicated sounders.

3) An RD-30 is not the best option to use with a NavNet 3D system. If you want a repeater, get a Furuno FI50-4 multi display. That is a NMEA2000 repeater and will show any combination of data available on the network. It has a nicer screen and is a "new technology" interface. Not sure it is necessary given all the data boxes you can have on screen with two MFD12s, which can be split to show even more fields. I have one on my system but that is because I have an Airmar 235Hz smart sensor hooked up to it so I have an indepdent backup depth instrument that will work even if the NavNet went down for some reason.

You might also want to consider getting one of the brand new Standard Horizon GX2100 AIS VHF radios as a backup which is a very cheap way to add an AIS receiver. That will allow you to put AIS target data on the NavNet 3D, which is an excellent safety feature. The GX2100 has a built-in AIS receiver and a VHF splitter so all you need to do is hook it up to two of the NMEA 0183 ports on the NavNet MFD12 (it needs two NMEA 0183 ports for full DSC functionality because the AIS data needs its own 38,400 baud input port). You can even initiate a DSC call to an AIS target directly without programming in its address.
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Last edited by ClassicGuy; 02-07-2010 at 06:23 AM.
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Old 02-07-2010, 09:01 AM
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Wow. Glad I posted, a lot of good information here to think about.

CG and rickq,

I really like the flexibility to really tune the ff with the 295 vs the dff1.

Also, how is the radar/chartplotter overlay on the 3d. Had it on the Navnet 2 but did not use it much.

CG..appreciate the info on the GX2100. Just checked it out and that looks like the way I will go as my VHF...very cool. Thank YOU!!

Last edited by bens2; 02-07-2010 at 09:11 AM.
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Old 02-07-2010, 09:14 AM
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I am a VX2 user and agree with everything stated by Classic Guy.
My two cents is if bens2 wants to save a few bucks he can do the following. Go with a single MFD 12a backup GPS 32 and a 4kw open radar.
I have one screen but don't feel handicapped by it. The 4kw radar is plenty for navigation.
Reading birds with a radar is an art. My friend has a 6kw VX2 radar in his boat. I am not sure I am seeing birds or clutter at long distances. When we get close enough for the radar to see distinct bird dots moving around, the birds can be seen with optics.
A smart decision for Bens2 would be to go with a network sounder rather than a dedicated fish finder. I have a DFF 3 and highly recommend it. Performance is awsome. The upgrade is worth the $$.
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Old 02-07-2010, 10:57 AM
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Quote:
Originally Posted by bens2 View Post
Wow. Glad I posted, a lot of good information here to think about.

CG and rickq,

I really like the flexibility to really tune the ff with the 295 vs the dff1.

Also, how is the radar/chartplotter overlay on the 3d. Had it on the Navnet 2 but did not use it much.

CG..appreciate the info on the GX2100. Just checked it out and that looks like the way I will go as my VHF...very cool. Thank YOU!!
I use the radar overlay on the chartplotter when I am heading out of the river at 3am. It works really well and it is nice to see the radar overlay painting the chanel markers on the chart. Once I clear the inlet I only need a Radar and fish finder on the open ocean. I agree it is good to have a second GPS in case one goes down. As a person that is fairly knowledgable with electronics and computers. I just never seemed to figure out how the DFF1 would do what I wanted it to do. I added a GP32 as a second GPS to get me home in case my Navnet3D failed.
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Old 02-07-2010, 11:01 AM
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Quote:
Originally Posted by bens2 View Post
Wow. Glad I posted, a lot of good information here to think about.

CG and rickq,

I really like the flexibility to really tune the ff with the 295 vs the dff1.

Also, how is the radar/chartplotter overlay on the 3d. Had it on the Navnet 2 but did not use it much.

CG..appreciate the info on the GX2100. Just checked it out and that looks like the way I will go as my VHF...very cool. Thank YOU!!
The overlay works well on the NavNet 3D, better than the VX2 mostly due to the faster redraw. I don't use it very often either. My feeling is that it is a good training aid so people can see how land masses and other types of fixed targets show up on the radar, but for a reasonably experienced radar operator, it just clutters the display.

Any tuning you can do on the FCV295 you can do on the NavNet 3D. All the same parameters can be adjusted. It is a bit more of a production since sometimes you need to go down into the menus two levels to get the full range of tuning features with the DFF1 or DFF3. The basic stuff like manual gain and range is just as easy to adjust with the NavNet as with the dedicated sounders. On a big boat with plenty of room for displays so you can have a sounder and also have two navigation/radar units, a high quality stand-alone sounder is a nice thing to have. But if you are limited to just two screens, you give up an awful lot of functionality with a stand-alone instead of two MFDs. Just my two cents.
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Old 02-07-2010, 11:40 AM
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I only have room for two displays and I carry a backup GPS handheld unit with backup batteries stored in sealed plastic bags.
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Old 02-07-2010, 12:11 PM
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Quote:
Originally Posted by bens2 View Post
Going with the Navnet 3d. I have enough room for either twin 12" MFDs or a single 12" MFD and a dedicated fishfinder like the FCV 295. Other electronics will include Icom 504 vhf or Simrad AP 16.

Questions are....

1. 4kw dome vs 6kw open

2. Twin 12" MFDs with dff 1 avs single 12" MFD and dedicated fishfinder FCV 295. Transducer will be Airmar B260 1kw for either setup.

3. Is an RD 30 useful with a 3d like it was with the Navnet VX2 for quick temp, position, speed etc???

Fishing inshore/offshore out to 600'.

All experienced Furuno related input would be appreciated. I do not want to discuss any other brand.
What type of boat? You say a B260 ducer. That has a block. Great on a bigger boat, but if you have a CC or outboard boat I would suggest a B164 1K tilted element thru hull.
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Old 02-07-2010, 12:25 PM
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No worries on the transducer. Regulator builds in a molded transducer pocket that nicely fits a B260.
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Old 02-08-2010, 06:54 PM
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bens2 keep me up on what you do i will be placing my order for 2 mfd12s within a month.
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Old 02-09-2010, 06:18 AM
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Going to drop the FCV 295 and go with two MFD 12s and a DFF1 blackbox. My ducer is the limiting step and does not allow me to take full advantage of the FCV 295 capabilities. The 2kw and larger ducers would also require fiberglass work that I do not have the budget for. I've had the B260 and bbff1 in the past and been pleased with it.
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