Larry,
That is an astute observation. In fact, in the Netherlands, a regulation was
recently passed that all the commercial shipping must have radars that work
between 0 and 100 meters by the end of '06. This will be a big problem
because most of the existing commercial radars and their mounting will not
see close targets. However, the vertical fan of most antennas is 30 degrees,
so mounting isn't the biggest problem. The biggest issue is pulse width and
electronics speed. At 6.36usec per radar mile, the pulse width must be less
than 1usec and the receiver must be on within nano seconds after the pulse
transmission in order to sense a close target.
Steve

"Larry W4CSC" wrote in message
...
"david" wrote in
:

Can anyone help I bought the radar second hand and I don't know how to
use it
has anyone got a manual in pdf format please
David in perth




http://www.marineelectronicshoppe.co...RC/Default.htm
$US20 too much?

http://www.jrc.co.jp/eng/product/mar...ar1000_outline
.html

Ask 'em for a manual...
http://www.jrc.co.jp/eng/product/mar...iry/index.html
Yours fell overboard, right??...(c;

Nice little radar for NEAR objects, where it counts. Mount it LOW down,
not way up high trying to see targets 16 miles away. If it's 12' off the
deck, it'll show you that bouy in the fog nearly right up until you run
over it! Way up high, it'll overshoot the bouy at the worst time....when
you're close!