Raymarine C140w User Reference Handbook page 115

Tuning method Related Options
FTC function • ON — enables the
FTC function and
allows you to adjust
the setting between 0
and 100%.
• OFF — disables the
FTC function. This is
the default.
Using radar
Description Tuning method
Enables you to remove Rain function
areas of clutter at a
distance from your
vessel. It also helps you
to distinguish between
two very close echoes
on the same bearing,
which may otherwise
merge and appear
as one echo. You can
adjust the intensity of the
FTC function between 0
and 100%:
• A higher setting
shows only the
leading edge of large
(rain clutter) echoes,
while the effect on
smaller (ship) echoes
is only slight.
• A lower setting
reduces background
noise and fill-in
returns from land and
other large targets.
Related Options Description
• ON — enables the The radar scanner
Rain function and detects echoes from rain
allows you to adjust or snow. These echoes
the setting between 0 appear on screen as
and 100%. countless small echoes
continuously changing
• OFF — disables the
size, intensity and
Rain function. This is
position. Turning the
the default.
rain clutter function
ON suppresses the
bulk effect of rain
returns from around
your vessel, making
it easier to recognize
other objects. You can
adjust the intensity of
this setting between 0
and 100%.
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