I have the furuno
1623 (?) mounted on a pole at the stern of my Pearson
27. It is a standalone unit with a small monochrome display. It was under $1400. We put together the stern pole out of aluminum
tubing and a small mast
mount thing, plus a clamp onto the stern rail. Cost for that about $350, mostly for the mast mount. We mounted the display under the dodger
. I have had a belowdecks radar display in the past and it's much better to have it in the cockpit
if you can. This radar has a one piece, do not cut and splice cable, so it is not very practical for mounting on your mast. This is a nice little radar, and being a Furuno, I expect it will last a long time. I disconnect the display and store it below when I am not going out for a while.
I also have a Lowrance package HDS-7 gen2 display with 3G radar on my fishing
boat. That is mounted on the cabin
top. Check defender's price for this package. I bought it a couple of years ago at their warehouse sale
in the spring, and they were offering an extra rebate at the sale
. I like this unit very much, and it is expandable. We have a basic fish
finder transducer now, and will probably add a fancier fishing
setup this spring. It came with basic charts
and last summer I got a Navionics
platinum chip for my area, which is quite nice. I believe the HDS 5 display will also run the radar, but the good package deal is with the 7 inch display. It comes with a 10 meter cable, but longer cables
On my new (to me) sailboat, there is an older ray marine
analog radar. It works. When it dies I will likely replace it with a 3G or 4G lowrance. I may do this in stages, buying
a display unit first, with fishing transducers, that can handle radar as well.
So, given my experiences, the little furuno on a homemade or secondhand stern pole is what I would suggest as a standalone unit. If you need a chart plotter as well, I'd recommend the lowrance package.