Question about Raymarine GPS
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Posted on Jan 02, 2017
SOURCE: Raymarine A65
When the engine starts, there is a voltage drop as the starters crank, followed by a power surge as the alternators kick in and the voltage comes back up.
Ferrites are only there to prevent RF (Radio Wave) interference from other onboard devices.
You should either:
-add an isolated battery to the boat to service only your electronics. That way it is unaffected by the starters.
-There are several devices on the market like Newmar Power's "Start-Gurad" that automatically switch electronics to backup power during engine start. They work great and the electronics don't skip a beat.
Posted on Dec 28, 2007
SOURCE: A65 Transducer
Sound like your getting turbulence from the hull or your angle is allowing cavitation under the transducer. Look under the hull where the traducer is mounted and look for a part that has no obstruction including saltwater pickups, hull relieves, etc. The other thing to check is to take a strait edge on the bottom of the transducer to ensure the angle is slightly forward than the hull.
Posted on Dec 27, 2008
Sounds like your transducer either has drifted off frequency (age or been hit) Or your a65 is not able to transmit at that frequency. You should take it to a dealer with a Fish finder simulator and have it checked out before you go through the painstaking grief of a new transducer.
Posted on Jan 22, 2010
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