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[CA] [CA11] Boat Speed Calibration Inconsistency
10-26-19, 09:32 AM (This post was last modified: 10-28-19 02:05 PM by Chuck - Raymarine - Moderator.)
Post: #1
[CA11] Boat Speed Calibration Inconsistency
Hello, I have an ST60 boat speed head. I have tried: 1) new transducer and 2) the Airmar ultrasonic transducer. Each has been carefully calibrated. However, after a random period (days, months) the calibration is clearly off and the display reading becomes either high or low by a significant amount (10 to 15 percent). I have re calibrated the system several times and each time the value seems to drift. Is there some way to check if the display head is bad. Or?? Thanks, Charles
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[CA11] Boat Speed Calibration Inconsistency - infotechma04 - 10-26-19 09:32 AM

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