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Replace transducer or keep same?

Old 12-07-2017, 09:20 AM
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Default Replace transducer or keep same?

I am replacing a Garmin 4212 with a Simrad NSS 12 EVO 3.

My typical fishing is Gulf of Mexico for Grouper less than 150' in my 07 World Cat 270 SD

Currently I have a 50/200 through hull transducer. The problem I am having is when I get over 90' or so it becomes very challenging to discern the swiss cheese bottom from bottom with no structure. 75-80' or shallower it works great. I can drift on and off a spot in 130' and repeatedly catch fish in one area but not 250' "over". Bottom looks identical where fish are and are not........frustrating - and hard to know where to try fishing to add to ones book of "spots".

So big thing I am looking for with the new system is the better bottom discrimination of CHIRP.

Talked to 2 installers - one says use a medium CHIRP transducer.

Installer number 2 says "Big Job" to replace current transducer with a new one- if I use my current 50/200 transducer with the simrad I will still see 70-80% of the performance improvement vs same system with a new CHIRP transducer. I have no one to ask if this is legit.

My question is it worth installing a new transducer? Boat will need to be hauled and probably cost an extra $1000.

Thanks for your input!
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Old 12-07-2017, 09:37 AM
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The transducer is the lense thru which the mfd see’s. For better discrimination you need better lenses. Better frames don’t make you see any better.
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Old 12-07-2017, 12:49 PM
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Originally Posted by Catatude View Post
I am replacing a Garmin 4212 with a Simrad NSS 12 EVO 3.

My typical fishing is Gulf of Mexico for Grouper less than 150' in my 07 World Cat 270 SD

Currently I have a 50/200 through hull transducer. The problem I am having is when I get over 90' or so it becomes very challenging to discern the swiss cheese bottom from bottom with no structure. 75-80' or shallower it works great. I can drift on and off a spot in 130' and repeatedly catch fish in one area but not 250' "over". Bottom looks identical where fish are and are not........frustrating - and hard to know where to try fishing to add to ones book of "spots".

So big thing I am looking for with the new system is the better bottom discrimination of CHIRP.

Talked to 2 installers - one says use a medium CHIRP transducer.

Installer number 2 says "Big Job" to replace current transducer with a new one- if I use my current 50/200 transducer with the simrad I will still see 70-80% of the performance improvement vs same system with a new CHIRP transducer. I have no one to ask if this is legit.

My question is it worth installing a new transducer? Boat will need to be hauled and probably cost an extra $1000.

Thanks for your input!
For your depth you might be able to use a in hull transducer..(Shoot thru)
Only requires 6.75" of flat space on the hull.
No haul out required.

For example an Airmar M422C-LH-9N...18 and 5 degree beam width.


.

Last edited by semperfifishing; 12-07-2017 at 01:04 PM.
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Old 12-07-2017, 12:59 PM
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The main thing with transducers for bottom fishing is to ensure that you have the right beam width for the application. You want a narrow beam width at 200khz for what you are trying to accomplish. If you are unhappy with your machines performance now, you will be unhappy with a different display running the same transducer at the same power.
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Old 12-07-2017, 07:35 PM
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My second installer that wanted to replace the transducer recommended:

XSONIC AIRMAR B150M 0 DEG

What do you think of this suggestion? Thanks for the previous comments!
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Old 12-07-2017, 07:37 PM
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Originally Posted by Catatude View Post
My second installer that wanted to replace the transducer recommended:

XSONIC AIRMAR B150M 0 DEG

What do you think of this suggestion? Thanks for the previous comments!
If you are going thru the trouble of installing a thru hull for the evo3..get a good one.

If you want good bottom detail look at the B75H.


.
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Old 12-07-2017, 07:53 PM
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Thank you for the feedback semper - I appreciate it. Your recommendation makes sense.
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Old 12-08-2017, 05:24 AM
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Do you have a budget in mind and what transducer do you currently have?
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Old 12-08-2017, 07:43 AM
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I am not at the boats location as we speak but I believe the current transducer is a 50/200 Airmar that is about 10 years old.

Looking at about 12K budget for the complete refit including radar and updating the autopilot control head. Have no problem spending a little extra for "the best" transducer.
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Old 12-08-2017, 03:52 PM
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R599
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