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Thread: Garmin Echomap 74sv

  1. 05-18-2017, 07:18 AM #1
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    ftroop82
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    Default Garmin Echomap 74sv


    My Echomap came with a GT51M-TM transducer with frequencies of 260/455 kHz Chirp. Which would be the best setting for 20' of water side scan detail images?
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  2. 05-18-2017, 09:32 AM #2
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    Lower frequency will give more coverage - with less detail ...
    Higher frequency will give more detail - with less coverage ...

    Use both = dependent on which frequency the task at hand best utilizes ...

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  3. 05-18-2017, 09:38 AM #3
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    Since I fish mostly in 50' or less maybe I need to get a different transducer to get the quality images I've seen on some of these sites.
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