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If you had to pick a single transducer

Old 03-01-2020, 07:22 AM
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Default If you had to pick a single transducer

I have a boat with a b164. I'm interested in adding chirp so I was thinking of getting one of the b175.

Fishing in southeast fl/keys

-75% reef (yellowtail, mutton, grouper in 50-150 ft)
-25% deep drop 400-1100 ft

I thought about the b175's because they for in the same hole as my existing b164 20°. Would the B175m suit me best?

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Old 03-01-2020, 07:35 AM
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I would think that the Airmar B175LH would be a better choice.
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Old 03-01-2020, 07:37 AM
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B175M is the best single channel transducer for you, the best dual channel 1kW transducer would be one of the x265LM variants.
Old 03-01-2020, 07:43 AM
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not sure they do a b175 l/h deffo a M 175 l/ m or l /hw in hull.

but a b-175 M is a good choice

or keep your b164 and put in an m-185- HW in hull if it will fit ?
what head units you running
Old 03-01-2020, 08:26 AM
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Originally Posted by spodder View Post
not sure they do a b175 l/h deffo a M 175 l/ m or l /hw in hull.

but a b-175 M is a good choice

or keep your b164 and put in an m-185- HW in hull if it will fit ?
what head units you running
I have a pair of 4212's with a gsd 24. I'll be replacing those also. Either 2x 1242 xsv or one 1242 and a 8612
Old 03-01-2020, 09:01 AM
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B275 LH-W would be excellent. The H-W would be the best choice by far for the 75% of your fishing.
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Old 03-01-2020, 09:31 AM
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Originally Posted by c1steve View Post
B275 LH-W would be excellent. The H-W would be the best choice by far for the 75% of your fishing.
I don't believe it fits in the existing hole for the b164
Old 03-01-2020, 10:16 AM
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Originally Posted by OliMiami View Post
I have a pair of 4212's with a gsd 24. I'll be replacing those also. Either 2x 1242 xsv or one 1242 and a 8612
The 1242xsv, is single band...so you can use a single B175..to each unit.
The 862xsv is dual band..you can use a pair of B175 units to one unit... ...or a single fairing mounted B265 /B275 etc.

But if you are fishing in less than 1000' then the B175M would be just fine

Old 03-01-2020, 01:44 PM
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The M would be just fine for your 25% of the time,but you will hate it for the 75% of your reef fishing from 50-150ft.I removed a Medium after one bottom trip in the Gulf..and the HW was also a big waste..It is not like stripers in the Chesapeake? Capt.Mike
Old 03-01-2020, 04:20 PM
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Originally Posted by Daybreaker1 View Post
The M would be just fine for your 25% of the time,but you will hate it for the 75% of your reef fishing from 50-150ft.I removed a Medium after one bottom trip in the Gulf..and the HW was also a big waste..It is not like stripers in the Chesapeake? Capt.Mike
What do you prefer for up to 200ft?
Old 03-02-2020, 01:19 AM
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Always a high for Gulf bottom fishing up to 200ft. A tight cone to show small breaks and differences in the bottom.Great for Grouper,snapper and any other bottom fish.The traditional B260LH or 265 chirp is famous for bottom fishing most of the gulf,Northern gulf is much deeper.A single B175H is a good choice for 200ft. A B265LH with faring or M265 in hull would be a good option.Capt.Mike
Old 03-02-2020, 04:34 AM
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I've read and hear a lot of conflicting info on whether the B175m is effective fishing the water column in shallower depth, say to 120ft
Old 03-02-2020, 06:29 AM
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I fish 120ft weekly the high is best for bottom fishing.Capt.Mike
Old 03-02-2020, 09:55 AM
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Originally Posted by OliMiami View Post
I've read and hear a lot of conflicting info on whether the B175m is effective fishing the water column in shallower depth, say to 120ft
B175M does great in shallow water and deep. we use it in 20-30' in the bay, out to 1000' for tilefish. it marks fish very well. a black box like GSD 26 helps too for deeper water
Old 03-02-2020, 11:39 AM
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The performance of a transducer is not the same independent of which sonar it's connected to. B175M can be operated at 135 kHz to get a narrower cone and 85 kHz to get better coverage, while CHIRP is best at larger depths. Lowrance/Simrad gives excellent resolution at fixed frequencies and also Garmin gives very good resolution at fixed frequencies while Raymarine has crappy resolution at fixed frequencies. Daybreaker1 is running Raymarine systems.
Old 03-02-2020, 12:45 PM
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Abbor,What the F...k.You know everything about everything.I know your type.Do you fish the GOM...NO. Do you fish for grouper and snapper on the bottom since 1974... NO. I am just giving the gentleman my honest opinion on transducers after spending tens of thousands on hype.I did not mention nor do I ever mention manufacturers.Nor do I talk bad about other manufacturers.There all good.I did not even ask about Manufacturers...Your going to tell me about resolution on my Axiom XL 22 with a R599 with 1920 x1080 FHD and the way I use it.Really, Capt.Mike
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Old 03-02-2020, 12:50 PM
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Please feel free to post a screen shot showing good resolution at fixed frequency from a Raymarine. I've posted screen shots showing the low resolution for Raymarine CHIRP systems operated at fixed frequencies multiple times, in CHIRP mode the resolution is good.

My Raymarine CHIRP experience is with CP570.
Old 03-02-2020, 12:57 PM
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I found one of the posts

Originally Posted by abbor View Post
The resolution in continuous wave mode (fixed frequency) will be losy so upgrading the transducer to M265LH will be a good idea.

M260 will be slightly worse than M265LH at fixed frequencies


Here is CP570 with B265LH at 160 kHz. Axiom Pro RVX has CP470 integrated.





Here is the same using low CHIRP


Old 03-02-2020, 12:58 PM
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Talk is cheap.We just dont look at fish on the screen,we look at them on the deck.



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Old 03-02-2020, 01:06 PM
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Nice images..When you bottom fish your sounder looks nothing like that,actually funny when people show images of there sounder.Can you find fish when the sounder shows nothing?..Yes. Some of the best Captains see nothing..Ask any great Captain they will tell you to fish the bottom not the fish. Capt.Mike

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