Furuno 1722, 1753C, 1742, 1733C, 1752, 1723C, 1762 Reducing Radar Interference, Radar interference

2. RADAR OPERATION

2.14Reducing Radar Interference

Radar interference may occur when near another shipborne radar that is operating in the same frequency band as your radar. Its on-screen appearance looks like many bright dots either scattered at random or in the form of dotted lines extending from the center to the edge of the display. Interference effects are distinguishable from normal echoes because they do not appear in the same place on successive rotations of the scanner.

Be sure to turn off the interference rejection circuit when no interference exists – weak targets may be missed.

Radar interference

1.If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2.Press the SIGNAL PROC. soft key.

1.5/	.500nm	° M	SIGNAL
	SP	319.9	PROCESS
H-UP
			I. REJ
			LOW

E. AVG	Shown when radar
OFF
	source is the Model
PULSE	1833/C series
SHORT	network radar. Not
E. STR	shown otherwise.
LOW

RETURN

+359.9° R 0.240nm

Signal process soft keys

3.Press the I. REJ soft key to choose the interference rejection level desired; LOW, MED, HIGH or OFF.

4.Press the RETURN soft key to finish.

The display shows IR L (Low), IR M (Medium) or IR H (High) when the interference rejecter is on.

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