How to install FURUNO magnetron MG5436 for Radar

Service and Owner's Manual.

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Either a weak magnetron, water in wave guide or most likely radar settings are not right.
You have an 1834C, so a 4KW dome, right?
Radar antenna should be set to type "B" in Radar Set-Up menu
Access this menu by holding the Menu button during turn on and then choosing Installation Mode, allowing access to Installation Set Up Menu, where the Radar Set Up Menu is located. Be sure to do Optimize Radar, while you are in there.
Learn to use Sea Clutter and turn off AC Auto Tune.
Good Luck!
John 847-746-0100

Must have RSB number and FCC ID number

mic assembly

If you have no radar targets, go to longest range 24 miles, gain full, rain and sea minimum, do you have noise, if so, need magnetron, if not, need cable from display to dome.

Go to longest range and full Gain min Rain and Sea Clutter
Do you have speckle? Yes = Receive OK, Wiring OK,No transmit (magnetron or modulator) No = Most likely a broken wire
There is a very tiny coax (shielded wire) that is know to lose its' center conductor, which is very delicate

You may have a faulty magnetron or one that has gotten old. They do have a life. Find out how many hours you have on the unit and give furuno a call. They will more than likely tell you what they think the problem is.

i have a furuno 1700 radar ,when i switch it on it goes to stand by ,when i press the standby button you can see it scanning but no land appears cheers alan

Call Furuno at 888-834-9330