TZTouch2 with a TM258 transducer

[Nick Palmer]

I currently run a TZTouch2 12F with a TM258 transducer mounted on the transom. I recently did an update to version 6.26 with factory resets. I am having trouble with the sounder when fishing at 1600-2000 ft. It seems like it is unable to pick up fish on the bottom. Do I have the wrong transducer for the job? Or is it the whole setup that needs to be looked at?

 

[Johnny Electron]

Well.. The TZT2 uses a 10 pin transducer so maybe you have the wrong transducer for the unit. What is the history of the 12 pin transducer you are using, and how have you adapted it?

 

[Nick Palmer]

I have taken apart the fitting at the transom and the plugs are 9 pin. The plug at the TZT is 10 pin. This was professionally installed when I bought the boat new, although the first transducer Installed (P66) I wasn’t happy with, so they upgraded to this one and haven’t had much success in deep water

 

[Johnny Electron]

It sounds like you got an Airmar Mix and Match transducer. That part sounds perfectly fine. Maybe you can post some screen shots and let SNIPS take a look at it. That transducer has a really wide beam on the LF side so you might be losing a lot of power as it spreads out. Going that deep, I would turn off BD, Accufish, and rezboost and run LF only. I would run transmit pulse rate on maximum manual 20.

 

[Nick Palmer]

Thanks for the info, I will try that next time I’m out. I will post pics of a messy screen that appeared while idling at 429m which was replaced after a few seconds with the blank white screen. Another pic is from 25m which is much better.

 

[Johnny Electron]

Yes, some better pictures for SNIPS would be great. That last one seems to reflect a ton of RF noise being picked up by the sounder.