31 Jc Transducer mushroom.

badger

Deckhand
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Jun 1, 2013
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Just bought a Garmin 547xs to back up my 3210 Network system. The 3210 has a traditional FF with a 600 watt ducer, radar and auto pilot .

The mushroom was intended to house the New CHIRP transducer for the 547. However the Chirp transducer needs 7 inch clearance for a 5inch hole. I think I can grind out a few imperfections and get my clearance. Correct me if Im wrong but that mushroom / faring block looks pretty beefy and I don't think clearing out an inch of the inside so we have a good seat for the ducer will hurt anything.
Is this big transducer hole a show stopper?

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captainlarry84

Admiral
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Sep 13, 2011
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KristenFormer Charter Captain
The airmar B258 in 1000 watts will fit nicely on the factory hull fairing blocks of your JC. It will also read good boat & fish at 22 knots. It is a much easier install with no guess work.

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