العربية
NJR2841 Series – Universal Ku-band 2LO PLL LNB (Mechanical Switch)
A Universal Ku-band low noise block downconverter with a mechanical switch for selecting between low- and high-band local oscillator frequencies.
The NJR2841 series is a low-noise block downconverter (LNB) designed for Universal Ku-band satellite reception across 10.7 to 12.75 GHz. It uses a mechanical switch to toggle the PLL local oscillator between the L-band (9.75 GHz) and H-band (10.6 GHz) settings. It delivers a typical noise figure of 0.8 dB and is offered in multiple internal-reference frequency stability grades as well as an external-reference version. The unit is compact and lightweight and is RoHS compliant.
| Parameter | Specification |
|---|---|
| RF Input Interface | Waveguide, WR75 (with Groove) |
| IF Output Interface | Coax. Connector, N-type Female (50 Ω) / Coax. Connector, F-type Female (75 Ω) |
| 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 |
| Linear Gain | 62 dB max., 48 dB min. @ +25C |
| Noise Figure(NF) | 0.8 dB typ. @ +25C |
| Input Power Voltage Requirement | +12 / +24 VDC (+10 to +24 VDC) |
| Current Consumption | Int. Ref.: 170 mA max. / Ext. Ref.: 200 mA max. |
| Operating Temperature Range | -40 to +60C |
| Waterproof / Dustproof (IP-code) | IP67 |
| Weight | F-type: 210 g / N-type: 240 g |
| Dimensions | (L) 83.2 x (W) 42 x (H) 42 mm (w/o Interfaces & Screws) |
