[CA] [CA11] RV-100 keep losing bottom depth

[Chuck - Raymarine - Moderator]

Bon Vibe,

Q1. The SOG was about 6 kts. I also tested it on “quite ship” and let it drift to the deep.
A1. Noted. It appears that you were getting weak returns from about 500' Was this the charted depth of the water as indicated within the chart application? Please be certain that the MFD has been updated with LightHouse 3 v3.11.42 or later software (HOME->SETTINGS) and if so, perform a Power ON Factory Reset and then manually restore settings (vs. from a saved settings file) to improve the sonar performance. Should the problem persist thereafter, then please attach photographs showing the transducer's installation with respect to the transom, bottom of the hull, and of other objects in close proximity.

Q1. Is this transducer a High Chirp?
A1. Yes.