View Single Post
  #4   Report Post  
posted to rec.boats.electronics
Marc Heusser[_2_] Marc Heusser[_2_] is offline
external usenet poster
 
First recorded activity by BoatBanter: Oct 2007
Posts: 102
Default Radar for sailboats

In article ,
"Robert Miles" wrote:

Any thoughts on who makes small low power radomes for sailors please?


First see what you need:
If you want it for tight waters a radome might not have sufficient
resolution, as this is dependent on the lenght of the antenna.

see this post (lenghty
discussion of all the aspects under the title Koden radars:

radio beam width [degrees] = 2.1 / Antenna Length [m]
ie a 40 cm radome gives 5.6°
a 65 cm cm (2') radome gives 3.2°
a 90 cm (3') open array gives 2.3°
a 120 cm (4') open array gives 1.8°
a 180 cm (6')open array gives 1.2°

Then: eg 4kW is the peak power.

As for manufacturers apart from Furuno there is now Koden it seems, and
have a look at Simrad DX-60 if you want a radome.

HTH

Marc

--
remove bye and from mercial to get valid e-mail
http://www.heusser.com