My Echomap came with a GT51M-TM transducer with frequencies of 260/455 kHz Chirp SI\DI. Which would be the best setting for 20' of water side scan detail images? The 800 kHz images on some of this sites images look very clear.
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Minnow
Garmin 74sv
My Echomap came with a GT51M-TM transducer with frequencies of 260/455 kHz Chirp SI\DI. Which would be the best setting for 20' of water side scan detail images? The 800 kHz images on some of this sites images look very clear.
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