Question about Furuno GP7000F/NT GPS Receiver

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Furuno sounder trandecer problems

I have a furuno 1650f sounder with a transom mount transducer. It works well at slow speeds but not at speed.It looses picture quility over 20km.It is mounted on a 6.8m alloy cat and the tranducer is within 100mm of the port side motor.I have played with the hieght but does not make much differance.I have been told to remove the tranducer to inside the hull onto a bed of marine silicon and use it as a floor mount, as it is mounted to close to the motor.Do you have any ideas as it is very frustating loosing the picture when i am on the plane.

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The leading edge of the ducer should be higher than the aft portion. The leading edge must not be below the bottom of the transom. To determine if it is turbulence or radiated interference, put the boat in neutral and run motor up in RPM, if it fails then, with boat stationary, then proximity to motor is a problem and you should buy and in-hull ducer. glueing the transom ducer may or may not work well.

Posted on Jan 16, 2010

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Posted on Jan 02, 2017

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Which version furuno echo sounder will work with the LS8000 in-hull transducer. I need to upgrade but the transducer is built into the hull, would be easier just to keep it


I think for this one your best bet would to be to call Furuno tech. directly. They'll be more than happy to upgrade your instrument.

There are two numbers:
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Good day, I just bought a transducer (R209) for my 1920 C furuno display but seem to have a probleem with the setup on the display. I have no radar connected to the system and to do the installation...


If you just have the transducer and no network sounder youre pretty much dead in the water. along with your transducer, you will need either a BBFF1 or DFF1 sounder. Since they operate on a network they will have to be configured depending on your setup.

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How many pins on the furuno 1650F?


depending on which port you are referring to: The power has 3, the datas have 6 and 7 and the transducer plug has 10 pins.

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Can not get clear reading of bottom when travellling over 9 knots


Your in hull ducer is getting turbulence. (in hull or not) A transducer will stop working is the tiniest cabitation or air bubble interferes. If possible, relocate the ducer. If you have a transom mounted ducer, try angling the leading edge up. This is a 90 % chance caused by turbulence on ducer. The other possibility, al;though remote is that you alternator or ignition system is interfering after a certain RPM on the motor.
Try first to manually gain the FCV620. You will always need to manual gain set the unit if you have an in hull ducer.

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1 Answer

My furuno depth finder gives me crazy depth readings after i go over 10knots..whats the problem?


Turbulence on the transducer is almost certain. If transom mounted, **** it slightly deeper aft and ensure that the leading edge is not exposed. If through hull, call me 847-746-0100

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My problem is I bought a 600l furuno and it came w/a thru-hull transducer and I wanted a transom mounted trans.I all ready bought a tr/mount and I need to sell the thru/hull.It's the 2" w/speed and temp...


i will exchange this for you, free shipping no charge, just ship it to me to inspect and i will send you the transom ducer no charge, if you have a bronze thru hull with speed and temp to trade for a plastic transom mount with speed and temp, let me know

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I have a furuno fcv 585 echo sounder with a FURUNO CA50/200-12M -c13298 BRONZE THRU HULL HIGH PERFORMANCE TRANSDUCER. The transducer has 4 wires and it looks from the schematic that it attaches via a...


you need an MB1100 matching box has the 10 pin pigtail for your sounder and accepts bare wire input from your ducer
this will also ensure that all power from sonar get to ducer, but it from me if you like 847-746-0100

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Depth sounder problem


If the transducer is mounted off of level, an error is introduced due to angle. It is a fixed percent offset, say 10%. so 10 feet reads 11 and 100 reads 110. There is an offset function to read depth below ducer, depth below keel, and depth below waterline, but these are fixed amounts in feet, not a percentage. Look at the transducer when it is operating, boat angle considered.

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Installation furuno GP7000F/NT


This unit has built in sonar, so no DFF1 is required. The 1KW transom mount is in stock here, with the proper Furuno 10 pin connector. That is all you need, the display, the power cord, the GPS antenna, the transducer and THE BOOK! We are a Furuno dealer in the Great Lakes

Mar 03, 2008 | Furuno GP7000F/NT GPS Receiver

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