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Furuno 1943 Radar Return issues? Need some help

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Furuno 1943 Radar Return issues? Need some help

Old 07-28-2013, 03:18 PM
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Join Date: Jan 2011
Location: Manasquan NJ
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Default Furuno 1943 Radar Return issues? Need some help

I recently purchased a 31 Albemarle with a furuno 1943c. Thus far I have not been too impressed with the radar. I have spent weeks reading the manual and trying different gain settings.

On a range of 6 miles or more, the radar will barely displays anything.....Even if the boats are within a few miles, If its on 3 miles or less it will pick things up, the closer the range then better. Boats on a 3 mile range come up as speckles, not red blobs. Is this common? What am I missing

Gain has been adjusted, trying everything from manual to the auto settings
Ac sea and rain adjusted.
Pulse settings are where they need to be
Even stretched the echoes

I had a raymarine e120 classic with 48 hd radar and I would be comfortable in pea soup fog. Not feeling the same here, but would love to get it dialed in

Any insight would be appreciated


Old 07-30-2013, 05:41 AM
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Join Date: Jun 2009
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1943c... I just looked it up and thats a 6kw open array on the 10.4" navnet screen. I use them at work... The manual sucks. Period.

I'm doing this by "feel" so bear with me.

Set the radar to manual settings.

Pick a manageable range to start... 3 mi (if you're at the dock, try .125 or .250, but it's hard to tune sitting still at the dock, you need to be out and about)

under the hide/show menu Select select AC/AT set to OFF. (important - it never works well with this set to on)

Set rain to 0 (also important)

Set gain to, say, 40.

Set Sea to... 70.

I run a launch boat for a living and for what I do, I almost never go over 6 miles with the 48" open array, and I find that 4 miles looks better on the screen. I tune the radar to known/fixed points; ie: the jetty on the way out when I run on 1/4 mile range. When I range up, I tune to the 7 bouys designating the anchorage at 4 miles.

Your settings will change (always) as you move up or down in range because the radar changes the pulses sent - short pulse (sp), medium pulse (mp), and Long pulse (LP).

The sea clutter is what I adjust the most, followed by smaller adjustments of the gain. As you turn up the sea clutter, you will lose detail along the embankment if you're running inside,

I do this by feel without really looking closely at numbers, and it seems like the numbers are never the same from day to day. The numbers certainly differ from boat to boat, which is why I tune to known targets.

I hope this helps a little - it's something I do by feel, and it's honestly hard for me to put into writing. Please shoot questions at me.

Last edited by Fechmup; 07-30-2013 at 05:59 AM.

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