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Old 17-09-2016, 16:59   #16
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Re: Radar Pole -- Radar Height

I can tell you my pole mounted 4G is not good for guard zones if there is decent sized waves, I get lots of returns, intermittent strobes, I assume due to the main beam striking the waves from the boat pitching and rolling as well as wave height, and antenna height.


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Old 17-09-2016, 17:00   #17
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Re: Radar Pole -- Radar Height

Radar will travel slightly over the horizon, I think about 1.2 times normal visual horizon.


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Old 17-09-2016, 17:27   #18
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Re: Radar Pole -- Radar Height

How long is it going to take a squall that's 32 NM away from you. If it's bearing down at you at 50 Kts , my best guess would be that you have at least a half an hour to reef some sails close some hatches & port holes. I move according to how fast I need to. In a pinch I could be squall ready in 5 minutes. Add 5 more minutes to that if I'm in the middle of cooking. I don't want to be woke up when the shipping container is a half mile away .A quarter mile is plenty of time for me to get my act together and steer around it. AIS is a really good tool to enhance ship detection. I believe we should carry as many collision avoidance systems as we can afford right down to simple radar reflectors and bright LED lights. I like to stand out like a Christmas tree when I can. Microwaves are not that healthy for us and having powerful radar systems kinda scare me a little like if a mounting bolt broke and pointed the unit right at my berth all night. I never say never. I like my smaller version digital G3 which IMHO is the best unit suited for people who share my views . I personally don't care what's farther than 15 NM away. I snap to attention the instant I open my eyes anyway. That's just me. So it just shows that there's room for small and large radars. It all comes down to personal preferences and we each have different preferences for certain. If I was so concerned I'd launch my AWACS GPS Digital Radar carrying Drone that can reach an altitude of 2 miles straight up and see everything within 450 NM 360 degrees around me. I can have it launched in 5 minutes and back on board in 15 minutes and know exactly what is any possible threat within 450 NM of my little boat. After a fast charge I can have it back up there in half an hour. <Just kidding but you can be sure there's a version in the works>
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Old 17-09-2016, 18:18   #19
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Re: Radar Pole -- Radar Height

Quote:
Originally Posted by Rorzech View Post
How long is it going to take a squall that's 32 NM away from you. If it's bearing down at you at 50 Kts , my best guess would be that you have at least a half an hour to reef some sails .........oa>
I've never used radar to decide to reef. I have often used it to determine the track of a squall and adjust by course, usually to avoid it. In light airs on a long passage I've used the squall track to get closer to the favored edge to get some sustained wind.
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