Humminbird Side Imaging Forums
Side Imaging Forums => 997c SI, 998c SI & 999ci HD SI => Topic started by: Shine on November 08, 2012, 02:35:43 PM
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I need a transducer that will allow me to read bottom at over 1500'
This will be for locating humps in 1500'+ of water, daytime swordfishing. I need to read bottom, no SI or DI.
unit is a 998ci SI, currently only have a the transom mount SI ducer. boat is 23' seacraft, outboard with a bracket. the boat has a nice flat keel that is perfect for a thru-hull ducer, but the only one I find is designed to be used outside the hull with a fairing block (part number 710191-1).
My question: any reason this ducer could not be mounted on the flat part of my keel if I build a recess into the keel for it to fit? in other words, it will be flush with the bottom of my keel sitting in recess just like a fairing block
Thanks in Advance
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There is no reason that you could not do this Shine as long as the water flow over the transducer does not contain air bubbles.
You may instead want to look into transducers from other companies that are ‘flush mounted’ that could work as well. Try Airmar or RadarSonics, they should know if their transducers will work with our units. You would be looking for a 50/200kHz transducer.
http://www.airmartechnology.com/ (http://www.airmartechnology.com/)
http://www.radarsonics.com/ (http://www.radarsonics.com/)
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Thank you. I will check with airmar, and if they dont have anything better I will use the humminbird thru-hull.
No problem to making it flush with bottom :)
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I do the same kind of fishing, deep saltwater stuff up to around 1000ft, bought the 998 humminbird thinking it would work in deep water, the specs state itll work with the stock transducer up 1500', could never get it to read in over 300' of water, so I figured Id buy the 1kw ducer from Airmar, the transom mount TM260 thinking I would get readings of up to 3000' like the specs stated. Went out in 750' of water and would barely get a bottom reading and it would lose bottom more than it would track it, I messed with every setting and nothing seemed to help. I dont know if humminbird is just full of crap with the specs or if there is something wrong with my unit, has anyone else had any deepwater experience with there unit, I spent a fortune on this unit thinking it would at least perform near the specs but its no where close.
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so I figured Id buy the 1kw ducer from Airmar, the transom mount TM260 thinking I would get readings of up to 3000' like the specs stated. Went out in 750' of water and would barely get a bottom reading and it would lose bottom more than it would track it,
That is disappointing to hear, but I wonder if its not the fact you have a transom mount? A thru-hull is going to have a much clearer signal.
A 1kw transducer would have the power to send/receive signals to that depth, so it would only be a problem with signal quality - that is my guess - right ?
Is there anyone using this unit (998) with a 1 kw ducer who has had success with reading 1500+ ?
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I do the same kind of fishing, deep saltwater stuff up to around 1000ft, bought the 998 humminbird thinking it would work in deep water, the specs state itll work with the stock transducer up 1500', could never get it to read in over 300' of water, so I figured Id buy the 1kw ducer from Airmar, the transom mount TM260 thinking I would get readings of up to 3000' like the specs stated. Went out in 750' of water and would barely get a bottom reading and it would lose bottom more than it would track it, I messed with every setting and nothing seemed to help. I dont know if humminbird is just full of crap with the specs or if there is something wrong with my unit, has anyone else had any deepwater experience with there unit, I spent a fortune on this unit thinking it would at least perform near the specs but its no where close.
Sounds like the problem is either in the power supplied to the 998c Si unit, the menu setting used (have to use the “Dual 50/200” menu setting), the transducer mounting or in the unit itself. See if you can test someone else’s Humminbird unit (858c, 898c Si, 958c, 998c Si, 1157c, 1158c, 1197c Si or 1198c Si) on your boat and transducer and/or your 998c Si unit on their boat and get better results.
This problem does happen with the boat drifting and everything else on the boat turned off, right?
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I have power wire connected straight to the battery and have tried it with everything off with and without the engine running. I even tried it at drift so I dont think a through hull would get much clearer signal than that. When drifting in 750' it barely marked bottom, would come in and out and when I drifted into 800 wouldnt get anything at all, just cant believe the specs state it would read up to 3000' when I cant even get over 1000' unless there is something wrong with my unit, Im just curious to see anyone elses resluts in this water depth or greater.
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i'm very interested about this topic.
i go fishing in deep sea 650fts and i have to be sure about 898 description (1500'). have anyone tested the XHS 9 HDSI 180T in deep sea?
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captscoob:
Have you throroughly tested your battery, and all the power connections
(wires, fuse, fuse holder, connection at the back of your unit)?
You're stretching your unit in water depth WAY, WAY more
than what most people use these units for. Remember that these
units are designed primarily for freshwater depths. I think you're
pushing the limit of useability. For freshwater fishermen, I think 100
feet is considered really deep, but you're trying it at 10 times that.
Even if your unit can mark the bottom at 1,000 feet, it may not show
that much detail. You might be better off using a Salt water sonar
(Furuno, RayMarine, Si-tex).
You've got to make sure your power source and all connections
are top notch.
Also, you may have to put the sensitivity at max and keep it there.
Also, just to make sure, check that your max depth
setting is either set to auto, or as deep as it will go.
Also, if you can, have somebody look at your transducer when
you are on the water and your boat is fully loaded.
It should be flat against the water.
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allow me to disagree.
if the item description says 1500', it must work at that deeph or something like that.
I'm looking an answer because i 'm going to fish at deep waters and if it doenst work at 600', i have to change my transducer.
i'd like to see someone who tested the XHS 9 HDSI 180T around 600-1000 fts.
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It will probably work at 1500 feet with the 1k transducer. However as stated before the small screen will not show you much. probably only the depth. HB is not a deep sonar. In fact most deep affordable sonars use a towfish. I dont think HB has anything like that for your depth.
some have built their own but it has been for less than 1500 feet.
I hear you and the manual statement and they are right...it will work at depths to 1500........ what is missing is you wont see much of anything..
We run into this problem at 100 feet let alone 1500. Which is why we have more expensive sonar brands for those depths..
Chuck
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caminhante:
Have you ever watched Wicked Tuna?
Those Tuna are first spotted at 800 feet or so, then
come up to eat the bait.
None of those guys are using Humminbirds.
I think maybe when these units are tested, they are tested in
ultra-calm conditions with no current. Also, with a very hard
bottom.
Yea, they may show extreme depths at times, but
for the most part, they are not designed for deep water.
They are going to work best in shallow water, and probably
sporatic in deep water.
Listen to Chuck.
He's probably got hundreds of hours on the water with Humminbirds, and he knows
their limitations.
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I do the same kind of fishing, deep saltwater stuff up to around 1000ft, bought the 998 humminbird thinking it would work in deep water, the specs state itll work with the stock transducer up 1500', could never get it to read in over 300' of water, so I figured Id buy the 1kw ducer from Airmar, the transom mount TM260 thinking I would get readings of up to 3000' like the specs stated. Went out in 750' of water and would barely get a bottom reading and it would lose bottom more than it would track it, I messed with every setting and nothing seemed to help. I dont know if humminbird is just full of crap with the specs or if there is something wrong with my unit, has anyone else had any deepwater experience with there unit, I spent a fortune on this unit thinking it would at least perform near the specs but its no where close.
hey ive got same setup and had same sort problems but after updating my system to think it was version 6.2 its made it heaps better i cant go over 2kt without it losing its self in over 300ft but i have marked fish on bottom in 1400ft just and easily marked fish around 850ft from Wat ive found all over the web think we will have to upgrade to a 2kw or 3kw transducer to get good results in theses depths
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Here's a technical question:
How does a Humminbird unit "know" that you have a 0.5 kw or a 1 kw transducer connected?
Every other unit I've used let you select the power output or else choose a specific transducer.
Will a 998 actually put out 1 kw of power with an Airmar TM260 connected?
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there is no selection on 1kw transducer but wen u change the transducer being used to 50/200 it automatically changes max depth to think mines 3200ft now after update was 3000ft