Satellite Communications

VSAT components

Universal Ku-band LNB

NJR2841 series

Possible to Select LO Frequency
Selection by Mechanical Rotary Switch
Frequency Organization
RF Frequency: (L-band) 10.7 to 11.7 GHz / (H-band) 11.7 to 12.75 GHz
IF Frequency: (L-band) 950 to 1,950 MHz / (H-band) 1,100 to 2,150 MHz
LO Frequency: (L-band) 9.75 GHz / (H-band) 10.6 GHz
LO Frequency Stability Line-up
L-type: Int. Ref., +/- 50 ppm (+/- 500 kHz typ.)
H-type: Int. Ref., +/- 10 ppm (+/- 100 kHz typ.)
S-type: Int. Ref., +/- 3 ppm (+/- 30 kHz typ.)
E-type: Ext. Ref.
Low Noise Performance
Noise Figure(NF): 0.8 dB typ.
Small Size & Light Weight
Weight: (F-type) 210 g / (N-type) 240 g
Other Features
RoHS Compliance

Products Line-up

Model No. RF Frequency Reference Type LO Stability IF Connector
NJR2841L 10.7 to 12.75 GHz
(L-band) 10.7 to 11.7 GHz
(H-band) 11.7 to 12.75 GH
Internal Ref. +/- 50 ppm
(+/- 500 kHz typ.)
F-type(75Ω)
NJR2841LN N-type(50Ω)
NJR2842H +/- 10 ppm
(+/- 100 kHz typ.)
F-type(75Ω)
NJR2841HN N-type(50Ω)
NJR2841S +/- 3 ppm
(+/- 3 kHz typ.)
F-type(75Ω)
NJR2841SN N-type(50Ω)
NJR2841E External Ref. Depends on
External Reference
F-type(75Ω)
NJR2841EN N-type(50Ω)

Specifications

Items Parameters
RF Input Interface Waveguide, WR75 (with Groove)
IF Output Interfance Coax. Connector, N-type Female (50 Ω)
Coax. Connector, F-type Female (75 Ω)
Noise Figure(NF) @ +25 ℃ 0.8 dB typ.
Linear Gain @ +25 ℃ 62 dB max., 48 dB min.
Input Power Voltage Requirement +12 / +24 VDC (+10 to +24 VDC)
Operationg Current Int. Ref.: 170 mA max.
Ext. Ref.: 200 mA max.
Operating Temperature Range -40 to +60 ℃
Waterproof / Dustproof (IP-code) IP67
Weight F-type: 210 g
N-type: 240 g
Dimension
(w/o Interfaces & Screws)
(L) 83.2 x (W) 42 x (H) 42 mm

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