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Thread: Transducer selection for Garmin 340C fishfinder

  1. #1
    Member Maast's Avatar
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    Mar 2008
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    Default Transducer selection for Garmin 340C fishfinder

    Hi all

    Courtesy of Lake Louise (in spots it gets shallow FAST) I need a new transducer for my 340C. It came with a dual-beam transducer, I've been thinking of getting the dual-frequency transducer but I don't know if it'll be worth it.

    I mainly use the fishfinder in PWS and occasionally a few southcentral lakes, dont really use it much in the rivers since I usually read the terrain/bends/flows.

    Also, I'm considering a thru-hull transducer, dont know if its worth it either.

    Opinions?

    Thx

  2. #2

    Default

    for that unit, you wouldn't be able to tell a difference. I'm not sure on the max depth reading for the 340, i think probably around 900', but i don't think it would matter much. And I've always thought they are actually the same thing. Dual beam just means it shoots the soundings down in a cone shape instead of straight down, so you get a wider range of readings. And dual frequency means 50/200khz. You can switch between the two for different details. Correct me if I'm wrong people, lol. I'm, not sure on this one.

  3. #3

    Default Transducer

    Quote Originally Posted by Maast View Post
    Hi all

    Courtesy of Lake Louise (in spots it gets shallow FAST) I need a new transducer for my 340C. It came with a dual-beam transducer, I've been thinking of getting the dual-frequency transducer but I don't know if it'll be worth it.

    I mainly use the fishfinder in PWS and occasionally a few southcentral lakes, dont really use it much in the rivers since I usually read the terrain/bends/flows.

    Also, I'm considering a thru-hull transducer, dont know if its worth it either.

    Opinions?

    Thx
    I've used a Vexilar flasher with their alumaducer, through the hull, transducer for several years. Its a great product and they make an adapter to connect to the 340C. Its hard to tear off a transducer if it's in the boat. Check this.
    http://www.vexilar.com/pages/accesso...ducers_au.html

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