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Radar dome mount or no?

Old 10-16-2011, 04:48 PM
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Default Radar dome mount or no?

I am about to install a Garmin GMR18HD on my 26 Cape Horn. I have the canvas off and am adding a plate to mount the radar. Should I get a radar mount or just mount the dome straight to the top?

If I get a mount it will be a short 4" tall one because I only have about 19" of clearance between the T-top and the trusses of the pole barn I keep the boat under.

To be honest the radar won't be used much. I just simply don't need it very often where I live and how I fish. If I mount it right to the top then the beam will be right in line with my GPS antennas. If I put it on a short mount, I am not sure it will make much difference but it will get the dome a touch higher.
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Old 10-16-2011, 06:51 PM
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definitely a small mount, does not have to be huge but like a 5 inch mount with a 4 degree wedge. Make shore you mount your gps antenna higher or way below the radar otherwise it will ruin the antenna. If you mount the radar on the t-top you are going to lose targets close to your bow and stern due to the blockage of the waves, and thats the most important point of radar right? Collision avoidance. At the least you will want a wedge so when you are on plane you also wont be pointing the radar at an upward angle.
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Old 10-16-2011, 10:21 PM
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HIGHER is better!! Get it UP!!

And, you do not want the radar beam in line with the GPS receiver.
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Old 10-18-2011, 12:55 PM
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You do want a mount to improve performance of your radar. Getting some down angle to compensate for bow rise is a good idea as well. BattleWagon makes mounts with a down angle at no extra charge. No need to buy a wedge. www.battlewagonmounts.com
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Old 10-18-2011, 01:07 PM
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Originally Posted by Aficionado View Post
You do want a mount to improve performance of your radar. Getting some down angle to compensate for bow rise is a good idea as well. BattleWagon makes mounts with a down angle at no extra charge. No need to buy a wedge. www.battlewagonmounts.com
Wow....those are pretty sweet mounts.
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Old 10-18-2011, 04:17 PM
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Yep, like the other guys said, the higher the better. Also, sound advice about not having the GPS antenna in the radar beam.
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Old 10-18-2011, 05:29 PM
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What do those go for? They are sharp.
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Old 10-18-2011, 07:07 PM
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The other benefit of the mount is the radar is easier to remove if ever needed - especially if you have an e-box below it on your top.
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Old 10-18-2011, 07:37 PM
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Originally Posted by Stickbo View Post
What do those go for? They are sharp.
The website says they are $300 or so. I think I'll fab something for that price.
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Old 10-20-2011, 11:47 AM
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You need a mount with some down angle to it for your CH. I think mine is 5 inches tall and 5 degrees down. Your t-top should already have a plate to mount it on...
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Old 10-20-2011, 01:53 PM
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Both my boats had 5" Scan Struts with zero angle. I didn't have any problems seeing targets out front in close and could even see my wake if I zoomed in.
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Old 10-20-2011, 06:39 PM
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Originally Posted by Endtuition01 View Post
You need a mount with some down angle to it for your CH. I think mine is 5 inches tall and 5 degrees down. Your t-top should already have a plate to mount it on...
It doesn't. This is the second CH that I had to add a radar mount plate too. The first one was a 21 on its second top though and the radar was an after thought.
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