العربية
NJS8497 Series Standard C-band PLL LNB (Internal Reference, Flange-type)
A standard C-band low-noise block downconverter (3.625-4.2 GHz) built around a highly stable internal PLL reference oscillator.
The NJS8497 is a PLL low noise block downconverter for the standard C-band range of 3.625 to 4.2 GHz, converting to an IF output of 950 to 1,525 MHz via a 5.15 GHz local oscillator. It relies on an internal reference oscillator rather than an external signal and is offered in four stability grades (H, S, U, V-type) with F-type or N-type IF connector options. Typical noise temperature is 15 K, weight is about 670 g, and the unit is RoHS compliant.
| Parameter | Specification |
|---|---|
| RF Input Interface | Waveguide, CPR229 (with Groove) |
| IF Output Interface | Coax. Connector, N-type Female (50 Ω) / Coax. Connector, F-type Female (75 Ω) |
| RF Frequency | 3.625 to 4.2 GHz |
| IF Frequency | 950 to 1,525 MHz |
| LO Frequency | 5.15 GHz |
| Linear Gain | 67 dB typ., 59 dB min. @ +25 ℃ |
| Noise Temperature (NT) | 15 K typ., 30 K max. @ +25 ℃ |
| Input Power Voltage Requirement | +24 VDC (+12 to +24 VDC) |
| Current Consumption | 350 mA max. |
| Operating Temperature Range | -40 to +60 ℃ |
| Waterproof / Dustproof (IP-code) | IP67 |
| Weight | 670 g |
| Dimensions | (L) 144.5 x (W) 98.4 x (H) 69.9 mm (w/o Interfaces & Screws) |
