Satellite Communications

VSAT components

Insat C-band LNB

NJS8488 series

Frequency Organization
RF Frequency: 4.5 to 4.8 GHz
IF Frequency: 960 to 1,260 MHz
LO Frequency: 5.76 GHz
Low Noise Performance
Noise Temperature(NT): 15 K typ.
LO Frequency Stability Line-up
H-type: +/- 10 ppm (+/- 50 kHz typ.)
S-type: +/- 3 ppm (+/- 15 kHz typ.)
U-type: +/- 1 ppm (+/- 5 kHz typ.)
Small Size & Light Weight
Weight: 800 g
Other Features
RoHS Compliance

Products Line-up

Model No. RF Frequency Reference Type LO Stability IF Connector
NJS8488H 4.5 to 4.8 GHz Internal Ref. +/- 10 ppm
(+/- 50 kHz typ.)
F-type(75Ω)
NJS8488HN N-type(50Ω)
NJS8488S +/- 3 ppm
(+/- 15 kHz typ.)
F-type(75Ω)
NJS8488SN N-type(50Ω)
NJS8488U +/- 1 ppm
(+/- 5 kHz typ.)
F-type(75Ω)
NJS8488UN N-type(50Ω)

Specifications

Items Parameters
RF Input Interface Waveguide, CPR229 (with Groove)
IF Output Interfance Coax. Connector, N-type Female (50 Ω)
Coax. Connector, F-type Female (75 Ω)
Noise Temperature(NT) @ +25 ℃ 15 K typ., 30 K max.
Linear Gain @ +25 ℃ 66 dB max., 59 dB min.
Input Power Voltage Requirement +24 VDC (+12 to +24 VDC)
Operationg Current 350 mA max.
Operating Temperature Range -40 to +60 ℃
Waterproof / Dustproof (IP-code) IP67
Weight 800 g
Dimension
(w/o Interfaces & Screws)
(L) 80.8 x (W) 99.6 x (H) 76 mm

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