Radar mounting on hardtop pics

Ky Grady

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I'm still not getting the necessity for a second compass when the Point-1 has one in it. But it states on the box and paperwork, that it's not recommended for use with MARPA? Guess I need to read more about it.
 

ROBERTH

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Back when I got my Lowrance 3G radar, to use overlay and have improved heading position, the RC42 was the tool to use. At the time, there was no Pilot-1 or Pilot-1AP used for the Autopilot.

I would say try without it and see if you are happy with the features and if not, you can easily add the rate compass later.

Here is some interesting reading and learning about a rate compass and what all is out there.
 

ROBERTH

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Ok, so you made me go out and start some measurements! lol.

Based on the manual, flush mounted with 11 degree angle from center of dome, I am fully clearing on the sides, just barely since my hardtop curves to the sides and some also toward the rear and forward. Interesting design on the hardtop, never realized how much is curves.
Since the radar is mounted forward with a lean forward, it allows the beam to clear aft as well, but just barely.

I can watch my prop wash when running, so that tells me it is doing pretty good!

I think though, the 25 degree part of the beam, is where I lose some from sides and rear, rear not being that important but as I approach a marker bouy it will disappear when starting to pass when it is about 30' or so away whereas back when I had my 3G and was on a mount, it would see it nearly right next to the boat.

Due to my clearance issue, I am happy with the results so far.

Would I use a mount and get some elevation? Sure, but that is just not an option for me. I had quite a few tree scrapes on my 3G even with the canvas cover on it I use when travelling.
One of these days, I dread hitting a branch hard enough to crack or break the radar!
 

ROBERTH

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I found this:
Simrad and Lowrance's newest radar technology is now available. It has improved upon their existing broadband technology by incorporating Doppler. Doppler has enabled a host of new features, the most prominent of which is VelocityTrack. VelocityTrack actually senses motion of targets and can visually designate them on screen as closing on your position or moving away. This brings whole new level of information to your collision avoidance tools. This radar also sweeps at an industry leading 60 RPMs for a near real time image of nearby targets. It is also boasts a range of 48 miles for monitoring distant weather.

Features:
  • MARPA Tracking of up to 10 targets, or 20 targets in dual range mode - requires heading sensor
  • Low profile dome design
  • Harbor, Offshore, Bird, and Weather modes
  • Dual range operation so you can simultaneously view short and long ranges
  • Instant ON from standby
  • CHIRP technology with beam sharpening
  • Doppler Technology
  • VelicityTrack
  • Low emissions
 

Ky Grady

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Plan is for now,, Install radar and find out what works and what doesn't and go from there. I'm the same as you skunk,,, one thing says you have to have a heading sensor and another thing says not needed in the same paperwork.