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Garmin y-cable transducers

Old 06-20-2018, 07:54 PM
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Default Garmin y-cable transducers

i have a Gt30-tm and a gt50-tm installed on my Worldcat with a y-cable. And a B175 thru-hull

the garmin 7612xsv only shows the GT30 and the B175 installed.

My installer called Garmin. They said the best set up is the GT30 for side scan and the B175 for down scanning. They said the GT50 is just redundant. Are they seriously that stupid??!!

so my question is, is anyone running this configuration? Or do I need 2 GT ducers that are the same?

thanks for any help.
Charlie
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Old 06-21-2018, 04:21 AM
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The GT30 is sidescan and clearview only. The GT50 is sidescan, clearview and 300w medium frequency chirp 2D. The GT50 does everything the GT30 does, plus 2D sonar. What B175 do you have?
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Old 06-21-2018, 05:14 AM
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Airmar B175M thru hull
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Old 06-21-2018, 06:28 AM
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Originally Posted by NickBOE View Post
The GT30 is sidescan and clearview only. The GT50 is sidescan, clearview and 300w medium frequency chirp 2D. The GT50 does everything the GT30 does, plus 2D sonar. What B175 do you have?
i know all of that. I assumed the y-cable would connect the 2 ducers so the GT30 did one side and the GT50 did the down view and the other side.

C
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Old 06-21-2018, 06:43 AM
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Originally Posted by cldomson1 View Post
i have a Gt30-tm and a gt50-tm installed on my Worldcat with a y-cable. And a B175 thru-hull

the garmin 7612xsv only shows the GT30 and the B175 installed.

My installer called Garmin. They said the best set up is the GT30 for side scan and the B175 for down scanning. They said the GT50 is just redundant. Are they seriously that stupid??!!

so my question is, is anyone running this configuration? Or do I need 2 GT ducers that are the same?

thanks for any help.
Charlie

Technically they are serious and technically not that stupid. only difference is power. 1kw vs 300watt GT50, GT30 and a B175M is a poor choice of transducer selection. being you now have two of the same MED chirp ranges for your "Blue and red fishfinder" and two ducers using same 455/800 KHZ for Down and side stuff. GT51 at least operates at 260/455KHZ but same issue with MED chirp..


Also there is no way to connect two 12 pin ducers to a Y cable and then to a 12 Pin port? What Y cable are you using? The one used for port and starboard thru hull? Which means your transom is probably your port side scan and your thru hull GT50 is starboard Sidescan and CHIRP...

Your stuff is all messed up bud.. time to start over. What type of boating fishing do you do? What type of boat?
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Old 06-21-2018, 07:04 AM
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Your B175 has an 8 pin connector so it's connected to the 8 pin port on your 7612. I have a y cable installed in my installation I am running 2 GT51tm's and an 8 pin GT21tm. I have never tried to run two different 12 pin transducers using the y cable. I have an GT41 at home I'll connect it tonight and see if my 7610xsf sees both the 51 and 41.

Tom
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Old 06-21-2018, 10:45 AM
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Originally Posted by bluewaterpirate View Post
Your B175 has an 8 pin connector so it's connected to the 8 pin port on your 7612. I have a y cable installed in my installation I am running 2 GT51tm's and an 8 pin GT21tm. I have never tried to run two different 12 pin transducers using the y cable. I have an GT41 at home I'll connect it tonight and see if my 7610xsf sees both the 51 and 41.

Tom
thanks Tom

I need the split set up for a catamaran especially. I get artifact on one side otherwise.

I only bought the GT50 tm for the redundant down scan element in the rare occasion that the Airmar fails.

So let me know if the 51 and 41 work together. I might just have a bad GT50.

Charlie
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Old 06-21-2018, 11:38 AM
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Originally Posted by cldomson1 View Post


thanks Tom

I need the split set up for a catamaran especially. I get artifact on one side otherwise.

I only bought the GT50 tm for the redundant down scan element in the rare occasion that the Airmar fails.

So let me know if the 51 and 41 work together. I might just have a bad GT50.

Charlie
I recently installed the same setup on my WC223. As a result of recommendation by SemperFi (Gil), and a THT "gt51-transducer-transom-thru-hull" (I can't post links quite yet). I am no where near an expert: but in my experience, only one transducer "shows" in the unit and I much like you questioned it. Was told "try it on the water". The two ducers are connected with a "Y" cable to the Garmin unit
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Old 06-21-2018, 11:48 AM
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I have seen the 76XXxsv used with the Y cable and running the GT51-TM and the GT41-TM....
You will only see the GT51 listed.. ..as it is the main unit.
And you cannot select between the two..as they are working as one unit.

But one will get full side scan and down scan.
The GT51-Tm (Starboard) will fire side and down scan..the GT41-TM (Port) will fire side scan only.

The reason one uses this combination is if the motor blocks the side vu. etc.....for example....then you use the two ducers...and the Y cable.
The reason for the GT41 is that instead of using 2 GT51-TM units...being that the Port side ducer will only fire the side scan...the GT41 is cheaper $...and has the same side scan element as the GT51.
A very usable option.

Last edited by semperfifishing; 06-21-2018 at 05:47 PM.
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Old 06-21-2018, 03:13 PM
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Correct I just verified what Gill wrote above.

Tom
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Old 06-29-2018, 06:53 AM
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So do I need the GT50 on the starboard side? I think itís on the port.

And my 7612 only shows the GT30 attached. And it seems to use the B175 for the down view??

Ill try unplugging the GT30 and see what happens.
Then I might have to switch the GT50 to starboard side.
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Old 07-01-2018, 01:05 PM
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So I troubleshoot the Y-cable today.

With Gt30 starboard and Gt50 port on y-cable, the 7612 only shows a GT30 connected.

so I unplugged the Gt30, the unit now shows the gt50 in transducer list.

So i switched the port and starboard y connections. Now the unit only shows the GT50.

So basically it only shows the starboard y-cable transducer in the head unit. But it reads the starboard right side element, and port left side scan element.
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Old 07-01-2018, 01:06 PM
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Old 07-01-2018, 01:07 PM
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Pic above I plugged the port side GT50 back in to y-cable.
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Old 07-19-2018, 02:32 PM
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You might not believe this. I didnít when I saw it. Iíve yes seen it before.

My split transducer side scan can read bottom on plane, up to 30mph.

Inhad to to run over some rock piles to confirm it.
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Old 07-19-2018, 06:21 PM
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Originally Posted by cldomson1 View Post
Pic above I plugged the port side GT50 back in to y-cable.

On side of the y cable is thicker, presumed for side and down vu. the other for side only
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Old 07-20-2018, 05:41 AM
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Originally Posted by mp5475 View Post



On side of the y cable is thicker, presumed for side and down vu. the other for side only

i believe my unit is using the ride side on the GT30, the left side on the GT50 and the down view of the B175m.

Whatever it is, itís awesome. Best side scan Iíve ever seen.
C
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Old 07-20-2018, 11:52 AM
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Originally Posted by cldomson1 View Post



i believe my unit is using the ride side on the GT30, the left side on the GT50 and the down view of the B175m.

Whatever it is, it’s awesome. Best side scan I’ve ever seen.
C
downvu is from GT. B175M is traditional chirp
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