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Old 14-02-2010, 12:27   #1
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Northstar Sonar / Fishfinder Transducer Question

Ok, I've got my Northstar 491 box, transducer, and fairing block. Got the perfect location just aft of where the V starts. What I seem to be a bit thick about is how the damn thing scans forward while facing down? Should it be tilted or block modified to actually be aiming forwards? I know, would have been a great question to ask before I bought it....
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Old 14-02-2010, 19:05   #2
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What makes you think that it's a forward scanning sonar?
I didn't see any such indication, in my quick scan of the literature.

http://www.northstarnav.com/upload/N...M494_Rev_A.pdf
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Old 14-02-2010, 20:21   #3
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Fairing blocks require cutting to the deadrise of the hull - Airmar probably make the transducers for Northstar, here is a link to their installation instructions
http://airmartechnology.com/uploads/...1-rev08-ps.pdf
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