[TG] [TG11] Fishfinder tutorial

[Tom - Raymarine - Moderator]

Some of the pros I've spoken to have said the opposite, that monotonic (non-Chirp) sounders are more likely to scare fish than Chirp ones. A traditional monotonic sounder will make a sounder that is short and sharp and is something certainly that a person would recognise as being definitely artificial, whereas a chirp sounder's ping will be longer in duration but will change both in volume and frequency throughout the ping and would therefore likely sound more natural or biological to a human (the word Chirp long-predates fishfinders and is an analogy to a bird's call.) I've no idea what would scare a fish however.

Rather than changing technology, the simplest thing you could do to reduce a possible effect there would be to reduce power output, but on CP450C you can also use non-Chirp mode as well (50kHz, 200kHz are non-Chirp equivalents of Low Chirp and High Chirp.) Personally I wouldn't turn off Chirp, but you could certainly experiment with the effect on bait.

Regards,
Tom