installing radar

[lloyds]

I have decided on a single purpose radar, probably a Furuno 1623. Is the installation something an amateur can do? I am confident I can get it mounted and the cabling run, but I was wondering how hard it is to get it adjusted and functioning properly. The suppliers want about $500 to do the install and it might be best to go ahead and have them do it, just wondering if it is necessary. If I did it at least I would learn more about it.

[flrockytop]

[rogerbum]

I agree with the other Roger. I installed a Furuno 1712 on my previous CD 22 and the install was pretty easy. The hardest part was feeding the cable down (or up?) the tubing in the radar arch. The slot in the tubing for the cable wasn't quite large enough for the connector so I needed to use a dremel and several cutting wheels to enlarge it. Also, it's best not to cut the cable to shorten it so you will need to find someplace to coil and hide the extra cable. On my 22, I stuck it in behind the water tank. I think the entire install process took less than 2 hours (not including installing the arch but including enlarging the slot).

Once the dome is installed, the final alignment can be done electronically. You just need to be someplace pointed straight at a good signal (like a buoy for example) and then you can rotate the display electronically to line the signal up at the top of the screen. It shouldn't require more than a few degrees of rotation.

[tpbrady]

When I installed my 1623 the hardest part was drilling new holes in the stainless radar arch since the bolt pattern didn't match up. A fish tape will help to run a pull cord down the arch to the help pull the cable up into the center. I ran mine down the port side since the starboard side had the radio and GPS in it.

Tom

[lloyds]

Okay, then that is what I will do. Thanks.

[tpbrady]

After looking at Roger's comments about the connector, on the 1623 you disconnect everything inside the radome and pull it up to the arch from inside and then reconnect. The instructions are pretty good.

[Jazzmanic]

Yes, I had the exact same experience as Tom when I installed my 1623.

[matt_unique]

The collective experience here will ensure a clean install. I too installed and wired all of my electronics (Furuno).

You can definitely do it if you have some basic tools and can follow directions. The wiring is easy, properly creating a hole through your perfectly good roof is the hard part! As others noted, you want to get it as straight as you can physically then the final adjustment happens electronically.

Dr. Bob was kind enough to write a great article for my website. In short, you need to overdrill your holes, undercut, fill will epoxy paste, redrill the correct size holes, then as a last step slather on some 4200. This will ensure a water tight seal and when/if the 4200 sealant leaks it will not damage your balsa core. You will need to find a spot to coil up the excess radar cable (the radar is adjusted to the length of cable it comes with). Though it can be adjusted, most of us just avoid the potential hassle and coil it up.


To echo other comments already made, use your radar every time you are on your boat. This serves two purposes: one you will learn what things look like in good weather and two, you have an extra set of electronic eyes. Even in broad daylight this is not a bad thing. It's very easy to be focused on seas or conditions in front of you and have another vessel approach from your stern quickly.

Once you get radar you will never be without it again.

[thataway]

Definately a DIY project. The key is learning to tune the set as you use it. Do not rely on "auto"--you need to adjust gain, sea state, clutter for each condition to get the most out of the unit. I prefer the 1715, just a few dollars more and a larger scanner with better descrimination and a bigger screen. We put the radar LCD up high, and the chart plotters low.

Run it while you are in good visiability so you can learn what the targets look like.

[Tug]

Defenders has Furuno 1715 on sale for $1699.99, just $300.00 more than the Furuno 1623. Tug

[flrockytop]

I was lucky and didn't have to drill any new holes in the boat. The boat had a rocket launcher already on it with the center hole drilled out.

I will mention this. When I added my led anchor light I did have to drill an extra hole for the anchor light wire. I did debur the hole but did nothing other than feed the wire through the hole to get to the light. The other night I started popping the circuit barker on the anchor light. I found that where the wire went through the hole the wire had rubbed the insulation off the wire and it was shorting out. My bad for not doing it the thataway way in the first place. I should have put a grommet in the hole. I've made a repair for now but am going to have to re-do the thing when I get home.

Roger

[hardee]

Capt Matt said:

[lloyds]

One last question on the radar install. I finally got it installed and fired up. Worst part was drilling the stainless and enlarging the hole for the cable. The question is about the grounding cable shown in the instruction book. They say to ground to a bolt in the boat or weld to an aluminum hull. Do I need to actually ground it. I could always attach a strap to a window frame or something else convenient. Just don't see what it accomplishes.

[matt_unique]

[lloyds]

Great, thanks.