x-no-archive:yes


"Ric" wrote:

I'd get the same make of radar as your chartplotter. Partly because the
knobology will be the same between the two instruments, and partly because
they will talk to each other better. I have a Raymarine chartplotter and
bought a Furuno radar, and they won't properly share NMEA data - both
manufacturers blame the other half for the incompatibility. I bought Furuno
because all my research showed that they are fabulously reliable (and my
personal experience has confirmed this) but I still wish I'd bought
Raymarine because of the knobology and compatibility issues.

We don't have a chart plotter, and the only things I have 'talking' to
each other are the GPS and the computer charting system. I don't have
the GPS working with the autopilot or the radar. I don't have the
radar working with the GPS or anything else - and I don't intend to do
so. Maybe I'm a Luddite, but for what we do, I don't see the need for
it. The autopilot steers much better than I do, but with all the
non-charted obstacles in coastal waters we can't set it and forget it
anyway.

I'm not sure I know what a chart plotter is, except that it seems like
a lower tech kind of computer charting ???

I have a sailing boat, and I have my radar inside. It would be much more
useful on the outside, but the downside is that it would be exposed to sun,
salt and getting wacked by ropes etc. I have on my list of things to do to

If I was exposed to sun, salt and getting wacked by ropes in our
cockpit, I wouldn't go there either. AFA sun goes - I know too many
people who can't go out in their boats anymore because of skin cancer.
I don't want to be wacked by ropes either. Fortunately I'm waterproof
and the salt will wash off.

make a swinging arm that in is parked position holds the radar on the inside
above the chart-table, but on its swung position holds the radar in the
companionway where I could see it from the helm.

I've seen this done a couple of times. Seems to work well, although I
guess you'd have to have a remote so change scale etc.

Stick the radar halfway up the mast. If you have a rear gantry it is better
there, especially if gimballed. The nominal range of the smaller Furuno,
Raymarine and JRC radars is about 12 miles but in practise they are only
really reliable over about 5 miles. They will pick out land over a greater
distance, but that is not really helpful. Ships are the danger, and they are
only really visible at about 4-5 miles.


grandma Rosalie

"Rosalie B." wrote in message
...
x-no-archive:yes


"Ric" wrote:

I'd get the same make of radar as your chartplotter. Partly because the
knobology will be the same between the two instruments, and partly
because
they will talk to each other better. I have a Raymarine chartplotter and
bought a Furuno radar, and they won't properly share NMEA data - both
manufacturers blame the other half for the incompatibility. I bought
Furuno
because all my research showed that they are fabulously reliable (and my
personal experience has confirmed this) but I still wish I'd bought
Raymarine because of the knobology and compatibility issues.

We don't have a chart plotter, and the only things I have 'talking' to
each other are the GPS and the computer charting system. I don't have
the GPS working with the autopilot or the radar. I don't have the
radar working with the GPS or anything else - and I don't intend to do
so. Maybe I'm a Luddite, but for what we do, I don't see the need for
it. The autopilot steers much better than I do, but with all the
non-charted obstacles in coastal waters we can't set it and forget it
anyway.


I wouldn't think you are a Luddite, but you should think long and hard about
not feeding the GPS' NMEA output to the radar. At the very least, it
serves as a repeater for much of that data. And, as someone else noted, it
provides the lollipop display of the location of your next waypoint on the
radar screen. This is very useful information.


I'm not sure I know what a chart plotter is, except that it seems like
a lower tech kind of computer charting ???

I have a sailing boat, and I have my radar inside. It would be much more
useful on the outside, but the downside is that it would be exposed to
sun,
salt and getting wacked by ropes etc. I have on my list of things to do
to

If I was exposed to sun, salt and getting wacked by ropes in our
cockpit, I wouldn't go there either. AFA sun goes - I know too many
people who can't go out in their boats anymore because of skin cancer.
I don't want to be wacked by ropes either. Fortunately I'm waterproof
and the salt will wash off.

make a swinging arm that in is parked position holds the radar on the
inside
above the chart-table, but on its swung position holds the radar in the
companionway where I could see it from the helm.

I've seen this done a couple of times. Seems to work well, although I
guess you'd have to have a remote so change scale etc.

Depends on where you are sitting. We find that about 90 percent of our
radar use is when we are on autopilot, and it is cold and/or foggy and/or
dark, so that the favorite place to be is cozied up behind the dodger,
peeking about at the radar and whatever is visible forward. So we favor the
companionway or cockpit bulkhead as the favored location.

Stick the radar halfway up the mast. If you have a rear gantry it is
better
there, especially if gimballed. The nominal range of the smaller Furuno,
Raymarine and JRC radars is about 12 miles but in practise they are only
really reliable over about 5 miles. They will pick out land over a
greater
distance, but that is not really helpful. Ships are the danger, and they
are
only really visible at about 4-5 miles.


grandma Rosalie

"maxlynn" wrote in message
newst5Fb.31627$pY.9325@fed1read04...

I wouldn't think you are a Luddite, but you should think long and hard
about
not feeding the GPS' NMEA output to the radar. At the very least, it
serves as a repeater for much of that data. And, as someone else noted,
it
provides the lollipop display of the location of your next waypoint on the
radar screen. This is very useful information.

Exactly! And this is also exactly what will not work between Furuno radar
and Raymarine chartplotter. The Furuno cannot read properly the heading NMEA
sentence put out by the Raymarine and so the Furuno cannot work out properly
where to point the lollipop.

In resonse to question 2, there are two reasons to look at higher power
radars. One is to check for weather at long ranges, the other is that high
power radars can produce better imaging of targets which have a weak return,
such as kayaks, etc.

You are correct that you cannot see targets at the surface of the water very
far out. Radars advertise their range for the same reason computers
advertise their CPU clock speed. It's a hard number that's easy to
understand.

Dave

"Lloyd Sumpter" wrote in message
...
Hi,

Considering buying a radar, so I have a few questions:

1. On a sailboat, where do you put the display? I rarely steer from behind
the
wheel, mainly by sitting on one of the gunwales beside the wheel, or
sometimes
by Otto while hiding from the rain under the dodger (hence the
name... ).

2. Realistically, how far do you set the max range? I'm seeing that unless
I
mount the antenna up the mast, I'm not gonna get more than maybe 10 miles
range
no matter what unit I buy. Then again, if I see a freighter steaming at 30
knots, 10 miles away, I still have 20 minutes to do something. Is a
20-mile
range worth getting?

3. Do you trust yours enough to use it instead of a "watch" (ie watch the
radar
screen instead of where you're going)? Trying to decide if getting a radar
will
increase my cruising time significantly (ie more confidence in running at
night)

4. I see a "guard zone alarm" but no "constant-bearing alarm". Why not?
wouldn't
a constant-bearing alarm be far more useful (and not that hard to
implement)?

5. I'm looking at the Furuno 1623 or 1712, or the JRC 1000. I have a
Furuno
GP-31 GPS and I'm impressed by the quality (also, probably 90% of
commercial
boats around here have Furuno radars). Any comments?

6. Is it worth while to mount the antenna up the mast, or should I use a
"dedicated" mast at the transom?

That's all for now...dreaming on a dull winter's day...

Lloyd Sumpter
"Far Cove" Catalina 36

"Ric" wrote in message
...

"maxlynn" wrote in message
newst5Fb.31627$pY.9325@fed1read04...

I wouldn't think you are a Luddite, but you should think long and hard
about
not feeding the GPS' NMEA output to the radar. At the very least, it
serves as a repeater for much of that data. And, as someone else noted,
it
provides the lollipop display of the location of your next waypoint on
the
radar screen. This is very useful information.

Exactly! And this is also exactly what will not work between Furuno radar
and Raymarine chartplotter. The Furuno cannot read properly the heading
NMEA
sentence put out by the Raymarine and so the Furuno cannot work out
properly
where to point the lollipop.


I don't disagree with what you say, but the original poster stated that he
had a Furuno GPS, not a chartplotter. There is no problem feeding a
Raymarine SL-72 (for example), with NMEA data from his GPS. And from what I
understood, he wasn't interested in a chartplotter.

And in response to the original poster, I think that while the Furono radars
seem to win out when you are talking about larger CRT units, this doesn't
seem to extend down to the small LCD units. I think that it is generally
accepted that the small Raymarine sets are a little crisper than the
equivalent Furuno or JRC.