Furuno 1824C-BB, GD-1920C-BB, 1954C-BB, 1964C-BB, 1944C-BB, 1934C-BB, 1834C-BB manual

SP - 2

2.2.4	Radiator Length	60 cm
2.2.5	Horizontal Beamwidth	3.9°
2.2.6	Vertical Beamwidth	20°
2.2.7	Sidelobe Attenuation	-18 dB or less (within ±20° of main-lobe)
		-23 dB or less (±20° of main-lobe or more)

2.3MODEL1934-BB:

2.3.1	Radiator	Slotted waveguide array
2.3.2	Polarization	Horizontal
2.3.3	Antenna Rotation	24 or 48 rpm nominal
2.3.4	Radiator Length	100 cm (XN10)
2.3.5	Horizontal Beamwidth	2.4°
2.3.6	Vertical Beamwidth	27°
2.3.7	Sidelobe Attenuation	-20 dB or less (within ±20° of main-lobe)
		-28 dB or less (±20° of main-lobe or more)

2.4MODEL1944C-BB:

2.4.1	Radiator	Slotted waveguide array
2.4.2	Polarization	Horizontal
2.4.3	Antenna Rotation	24 or 48 rpm nominal
2.4.4	Radiator Length	120 cm (XN12)
2.4.5	Horizontal Beamwidth	1.9°
2.4.6	Vertical Beamwidth	22°
2.4.7	Sidelobe Attenuation	-24 dB or less (within ±20° of main-lobe)
		-30 dB or less (±20° of main-lobe or more)

2.5MODEL1954C-BB/1964C-BB:

2.5.1	Radiator	Slotted waveguide array
2.5.2	Polarization	Horizontal
2.5.3	Antenna Rotation	24 or 48 rpm nominal
2.5.4	Radiator Length	120 cm (XN12), 180 cm (XN13, 24rpm only)
2.5.5	Horizontal Beamwidth	1.9° (XN12), 1.2° (XN13)
2.5.6	Vertical Beamwidth	22°
2.5.7	Sidelobe Attenuation
	XN12:	-24 dB or less (within ±20° of main-lobe)
		-30 dB or less (±20° of main-lobe or more)
	XN13:	-24 dB or less (within ±10° of main-lobe)
		-30 dB or less (±10° of main-lobe or more)