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Which Garmin Transducer

Old 09-12-2019, 07:35 AM
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Default Which Garmin Transducer

I am purchasing a new Grady Freedom 307 and will be fishing in shallow to 75’ deep waters off the southwest coast of Florida. My dealer is recommending that I go with a transom mounted GT30 and a thru hull B60 or 171 (Garmin). I am leery of transom mount due to susceptibility to damage and am wondering why he is not recommending some of the more advanced ducers that are available. If anyone would be willing to share your thoughts on which selections would be best, it would be greatly appreciated.

thanks,
Ford
Old 09-12-2019, 08:10 AM
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I use a 275 Airmar chirp in a pocket which has worked well for me. Just adding a Garmin GT51TM now for side scan (transom mount). The GT30 is cheap and considered a shallow water transducer. I wouldn't buy that.
Old 09-12-2019, 10:11 AM
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Originally Posted by PhishnPhun View Post
I am purchasing a new Grady Freedom 307 and will be fishing in shallow to 75’ deep waters off the southwest coast of Florida. My dealer is recommending that I go with a transom mounted GT30 and a thru hull B60 or 171 (Garmin). I am leery of transom mount due to susceptibility to damage and am wondering why he is not recommending some of the more advanced ducers that are available. If anyone would be willing to share your thoughts on which selections would be best, it would be greatly appreciated.

thanks,
Ford

What will be the MFD head unit ?
And is side scan a feature high on your list?

Last edited by semperfifishing; 09-12-2019 at 10:19 AM.
Old 09-12-2019, 11:12 AM
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Yes, I am wanting a side scan and would not mind having front scan, but i am not sure that is possible with this type of baot.

The MFDs will be twin 8612s.

Thanks,
Ford

Originally Posted by semperfifishing View Post
What will be the MFD head unit ?
And is side scan a feature high on your list?
Old 09-12-2019, 12:21 PM
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The other transducer option for side scan besides a transom mount is the thru hull fairing mount versions.

And with a thru hull side scan mounting you have two options.

If the spot of mounting is less than 5 degrees deadrise you can use a single transducer..such as as a GT51TH.
But if the deadrise at the spot of mounting is greater than 5 degree then you would need to use a pair of transdcuers..such as the GT51 THP.

If the boat is trailered....sometimes fairing mount is not always the best option .


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Old 09-27-2019, 12:50 PM
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Default Which transducer GT52hw or the GT51?

It seems that I got the wrong (bundled) transducer with my Garmin94sv. I have been wondering why I can’t read side view like my friend can. I finally gave up and called Garmin. They told me that the CV51M is the wrong transducer for my Garmin and that I should instead install the GT52HW or the GT51M.

The odd thing is that West Marine told me that my CV51M will only read in shallow water to 150’. Garmin says the opposite that the CV51M will only read in deep water 200+ deep water.

But, Garmin also said that will send me either GT transducer free of charge since my unit is a) the incorrect transducer for my 94sv and b) that my unit being only 4 months old and still under warranty. They did not mention c) but it seems to suspiciously good to be true.

In any case, the GT51M goes for $599 and the GT 52HW goes for $300. Generally, I would go for the $600 one - it’s free. But, it is only 455 kHz while the less expensive one reads up to 800 kHz.

I should note that I fish exclusively in saltwater and shallow to 200’ deep with sonar only. My question is this: Which transducer do you feel I should get; the GT52HW or the GT51M? And, why? Thanks for your thoughts. I am thinking the $600 one, and if I don’t love it, sell it and get the GT52HW.

thanks

Last edited by Luv; 09-27-2019 at 01:04 PM. Reason: No message
Old 10-07-2019, 09:18 PM
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Originally Posted by PhishnPhun View Post
I am purchasing a new Grady Freedom 307 and will be fishing in shallow to 75’ deep waters off the southwest coast of Florida. My dealer is recommending that I go with a transom mounted GT30 and a thru hull B60 or 171 (Garmin). I am leery of transom mount due to susceptibility to damage and am wondering why he is not recommending some of the more advanced ducers that are available. If anyone would be willing to share your thoughts on which selections would be best, it would be greatly appreciated.

thanks,
Ford
I have the same boat. Running twin 7612s with an Aimar B175HW for fish in the water column as well as a Gamin GT-51 thru-hull for a tighter cone down, DownVu, and SideVu (to locate structure). That combo works excellent on this boat for the fishing you want to do. The thru-hull GT-51 mounts dead center on the flat spot at the rear of the hull and the B175HW next to it on the deadrise. The B175HW is a (if I recall correctly) 15-degree tilted element to account for the deadrise.

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