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Simrad NSS12 Evo3 Transducer choice

Old 08-22-2017, 12:21 AM
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Default Simrad NSS12 Evo3 Transducer choice

First time user/member here after reading and following this site for a couple of years now so thank you for all your informative posts on here. It's very much appreciated.

I'm in the process of purchasing a Simrad NSS12 Evo3 but am confused as to what transducer I should purchase to run with this unit. I live in Australia on the west coast and predominately bottom fish in offshore waters up to 400' but am planning on starting some deep drop fishing now that I have purchased some deep drop fishing gear. My boat is a 24' metal boat and I'm currently running a Furuno 588 with a TM260 as a stand alone sounder and plan on keeping this unit alongside the Simrad when I purchase it. The Furuno has no problem reading bottom at 30 knots up to these depths.

I would like some thought's and recommendations on what transducer I should connect to the NSS evo3. After reading forums for the last 2 weeks I'm still no closer to my decision except that I have narrowed it down to 3 choices. Either the totalscan, TM265LH or the TM275LH-W. Any thoughts or opinions would be greatly appreciated. Cheers, Kuzi.
Old 08-22-2017, 12:46 AM
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Default Addition to original post.

Originally Posted by kuzi View Post
First time user/member here after reading and following this site for a couple of years now so thank you for all your informative posts on here. It's very much appreciated.

I'm in the process of purchasing a Simrad NSS12 Evo3 but am confused as to what transducer I should purchase to run with this unit. I live in Australia on the west coast and predominately bottom fish in offshore waters up to 400' but am planning on starting some deep drop fishing now that I have purchased some deep drop fishing gear. My boat is a 24' metal boat and I'm currently running a Furuno 588 with a TM260 as a stand alone sounder and plan on keeping this unit alongside the Simrad when I purchase it. The Furuno has no problem reading bottom at 30 knots up to these depths.

I would like some thought's and recommendations on what transducer I should connect to the NSS evo3. After reading forums for the last 2 weeks I'm still no closer to my decision except that I have narrowed it down to 3 choices. Either the totalscan, TM265LH or the TM275LH-W. Any thoughts or opinions would be greatly appreciated. Cheers, Kuzi.
Will I notice any major differences or see any benefits over the Furuno 588 and TM260 current installation?
Old 08-22-2017, 04:57 AM
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Do a Google search for: b265lh vs b275lh

http://www.thehulltruth.com/semperfi...-update.html#b

I'm leaning towards the B265lh (with the recommendation from Chris at Boe Marine) as it is the same size as the B260 that is currently in the pocket mount on my boat.
Old 08-22-2017, 06:49 AM
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The TM265LH will be a better bet in my opinion for your bottom fishing. The High side will be a narrow cone angle which will give you a lot better bottom detail and target separation off the bottom. The TM275LHW will have a wider cone angle on the high which will be great for suspended fish marks in the upper water column, but you will not pick up as much bottom detail and as the water depths increase. The TM265LH would be my recommendation based off the information you have provided here.
Old 08-22-2017, 07:38 AM
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Default Thanks mate.

Originally Posted by Chris@BOEmarine View Post
The TM265LH will be a better bet in my opinion for your bottom fishing. The High side will be a narrow cone angle which will give you a lot better bottom detail and target separation off the bottom. The TM275LHW will have a wider cone angle on the high which will be great for suspended fish marks in the upper water column, but you will not pick up as much bottom detail and as the water depths increase. The TM265LH would be my recommendation based off the information you have provided here.
After all my research I was leaning towards the TM265LH for the same reasons as you mentioned. I guess my main question still would be about whether I would see any significant improvements or differences over the Furuno and TM260? Is it worth spending the extra money to have a 1kw chirp transducer also besides having a backup?
Old 08-22-2017, 08:16 AM
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I think you will see a significant improvement in target separation and resolution with the addition of a chirp transducer. If you fish once every couple months it may not be worth the extra money, but if you fish fairly often and are serious about getting the best data and imaging possible out of your sonar then I think this would absolutely be worth the extra cost. This is a big upgrade from what you have now in my opinion and the TM260 would quickly become the backup unit behind the TM265LH.
Old 08-22-2017, 08:37 AM
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Default Thanks once again.

I guess this was the kind of comment that I wanted to hear as I've been wanting some confirmation around this. As much as I like my Furuno it still seems a little dated now compared to what is out there these days. Technology has come a long way so I need to embrace it. Haha!

Thanks once again mate!
Old 08-24-2017, 11:18 PM
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Originally Posted by Chris@BOEmarine View Post
I think you will see a significant improvement in target separation and resolution with the addition of a chirp transducer. If you fish once every couple months it may not be worth the extra money, but if you fish fairly often and are serious about getting the best data and imaging possible out of your sonar then I think this would absolutely be worth the extra cost. This is a big upgrade from what you have now in my opinion and the TM260 would quickly become the backup unit behind the TM265LH.
I was planning on running my Furuno simultaneously alongside the Simrad sounder but I've been told that I will probably have interference if using both the high or low frequencies together at the same time. Do you agree with this? Would I be better off running the TM185M on the Simrad instead to avoid this issue?
Old 08-25-2017, 04:30 AM
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For the deep dropping CHIRP will give much better resolution so TM265LM will be a much better option than TM185M.

No reason to run two sounders with the same frequency and cone angle at the same time so interference shouldn't be a issue.
Old 09-02-2017, 03:08 PM
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Interesting thread since I have kinda the same question, plus an additional one.

1) I am looking for an Airmar CHIRP transducer for fishing in the English Channel, primarily wrecks and bottom fishing down to about 50 meters. Other destinations might see me going down to 100 meters. I was thinking of TM265LH, with H giving a narrow cone and maximum target resolution when fishing wrecks, and L for a wider beam for general fishing and targeting fish that feeding off the bottom, mid depth and closer to the surface. Or would you recommend TM265LM?

2) With a Lowrance HDS9 Gen3, do I need an additional black box for the Airmar transducer, or do I plug it straight into the Lowrance? I also have Structurescan 3D, a DST800 and a pretty inadequate P319
Old 09-03-2017, 02:40 PM
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Originally Posted by LarsRonning View Post
Interesting thread since I have kinda the same question, plus an additional one.

1) I am looking for an Airmar CHIRP transducer for fishing in the English Channel, primarily wrecks and bottom fishing down to about 50 meters. Other destinations might see me going down to 100 meters. I was thinking of TM265LH, with H giving a narrow cone and maximum target resolution when fishing wrecks, and L for a wider beam for general fishing and targeting fish that feeding off the bottom, mid depth and closer to the surface. Or would you recommend TM265LM?

2) With a Lowrance HDS9 Gen3, do I need an additional black box for the Airmar transducer, or do I plug it straight into the Lowrance? I also have Structurescan 3D, a DST800 and a pretty inadequate P319
1) Stick with the TM265LH. You will be better off with the high in depths up to 100 metres and it should be fine beyond 100 if set up correctly.

2) You might need a pigtail box. Best to check with the people you buy it from or email Navico and ask them. Pigtail box isn't too expensive if you need one.
Old 09-03-2017, 03:26 PM
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You need a S5100, NSS Evo3 or HDS Carbon to fully utilize a dual channel transducer.
Old 09-04-2017, 10:11 AM
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OK great thanks. Is the S5100 only compatible with Simrad Evo2 and Evo3? It's not compatible with a Lowrance HDS Gen3? If not, any idea if Lowrance will be bringing out a Lowrance version?
Old 09-04-2017, 10:20 AM
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It's compatible with HDS Gen3 and Carbon as well.
Old 05-30-2019, 12:57 PM
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OK guys, believe it or not, after two years I'm finally getting ready to upgrade my transducer as well as doing various other things. Back in 2017 I was going to go for the TM265LH but Airmar have recently launched the TM275LHW which seems like an even better option? I.e. wide coverage at high frequency at shallower waters and narrow coverage at low frequency at deeper waters.

My plan is to use the boat both in the UK Solent for all the usual species such as cod, ling, bass, tope, porbeagle, rays, breams etc., including wreck fishing, as well as I will towing the boat to Portugal where I will be fishing for tuna, sharks, swordfish and other pelagic species.

What's your verdict on the TM275LHW - seems like the best of both worlds?
Old 05-30-2019, 03:41 PM
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TM275LH-W has as you write wide coverage at high frequencies for shallow to moderate depths, but the problem is that it has wide coverage also for the Low frequencies. This is the reason why I in most cases recommend 1 kW Medium CHIRP transducers instead of 1 kW Low CHIRP.
Old 05-31-2019, 04:32 AM
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"but the problem is that it has wide coverage also for the Low frequencies" - thanks, Abbor!

Getting there, I think but what does this mean in reality? What will I lose if I go with a 275LH-W instead of a 265LH? Or in other words, based on what I need the transducer for (UK and Portugal fishing as I mentioned), what will I gain from going with 265LH instead of 275LH-W? I won't need to be able to find fish at crazy depths. I think the most I will need is a couple hundred meters.
Old 05-31-2019, 07:09 PM
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Kuzi
I fish the west coast as well probably north of you
I am currently running tm275 and tm 260 evo-2 and S5100 they swapped out myy tm 265 which as mentioned is a better xd for deep drop fishing but the 275 reads great at 300 meters plus but so does the 260
I suggest you try the 260 which has narrow cone before you spend all the extra dollars
I had a conversion cable from my Furuno to simrad made for $100
where do you fish and what target species
Old 06-01-2019, 06:12 PM
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I am in the fortunate position of having 265LH, 175M and 175HW. Down to 200’ I will usually deploy HW for its wide angle beam and superb performance detecting targets in the water column, but, even within that depth band and particularly when looking for targets beyond that depth, I usually switch to M or H for their narrower beam to be able to determine targets in closer proximity to my boat. I rarely use L. You need to consider beam angles and the area covered at the depths you intend fishing when considering transducer choice.

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