Originally Posted by TreblePlink
Thanks all ...
So Paul L, at 12 feet high, how far away does it typically see fishing
The biggest factor in recreational radar is the horizontal resolution. A 24 in antenna
that is typical on the 4kw enclosed units has about a 2.5* resolution. An 18 antenna
on the 2kw units has 5*. ( numbers taken from my memory. The 4g ones sometimes claim higher). Hres will determine how well you can distinguish targets. In flat conditions my system will see small fish
boats at 2-3 miles. It will even show birds out at a few miles. In rough conditions, small vessels can easily get lost
An antenna mounted low will tend to do a better job at the close in targets, such as small buoys and kayaks in a foggy channel. One mounted high will see further at the loss of some close in view.
We use our radar for 4 reasons
1. A watch band setup at 2 mile while on passages at night in busy areas
2. Tracking squalls
in reduced visibility
4. Measurement of the distance to land (verifying chart) and distance to close in boats.
5. Tracking boats that do not have AIS