# RTL-SDR 50MHz - 4Ghz Wideband LNA

## RTL-SDR 50MHz - 4GHz Wideband LNA

The RTL-SDR 50MHz - 4GHz Wideband LNA is a low-noise amplifier designed to enhance weak signal reception across a broad frequency range. Based on the high-performance SPF5189Z amplifier chipset, it provides low-noise gain from 50 MHz to 4 GHz, making it suitable for SDR receivers, ADS-B monitoring, satellite reception, GNSS applications, L-band reception, and general RF experimentation. Its bias-tee powered design allows convenient integration with compatible SDR receivers and active antenna systems.

### Key Features

-   Wideband low-noise amplifier covering 50 MHz to 4 GHz
-   High-performance SPF5189Z amplifier architecture
-   Low noise figure of less than 1 dB
-   Approximately 18.7 dB gain at 900 MHz
-   Designed to improve weak-signal reception performance
-   Bias-tee powered operation for simplified installation
-   Compatible with RTL-SDR V3 and V4 built-in bias tee functionality
-   Supports SDR, scanner, satellite, GNSS, and RF monitoring applications
-   Integrated ESD protection on antenna input
-   Fully shielded conductive metal enclosure
-   50-ohm RF design for SDR and communications equipment
-   SMA female RF connectors
-   Can be mounted directly at the receiver or antenna feed point
-   Suitable for ADS-B, AIS, L-band, Inmarsat, Iridium, and weather satellite reception
-   Low current consumption for portable SDR setups
-   Improves feedline loss compensation in remote antenna installations
-   Supports fixed station and portable monitoring systems
-   Alternative direct DC power option via internal jumper configuration
-   Compact inline installation design
-   Optimized for receive applications across VHF, UHF, and microwave bands
-   Excellent accessory for SDR spectrum monitoring and experimentation
-   Durable aluminum enclosure for RF shielding and mechanical protection
-   Suitable for hobbyist, amateur radio, satellite, and research applications
-   Plug-and-play operation with compatible bias-tee equipped receivers
-   Designed for low-noise signal amplification across a broad frequency range

### Typical Uses

-   Software Defined Radio (SDR) reception
-   ADS-B aircraft tracking systems
-   Inmarsat and Iridium satellite reception
-   GNSS and GPS signal monitoring
-   Weather satellite reception
-   VHF, UHF, and L-band monitoring
-   RF experimentation and spectrum analysis

### In the Box

-   RTL-SDR Wideband LNA
-   SMA Male-to-Male Adapter

## Details

- **Price:** 2950.0 INR
- **Vendor:** RTL-SDR
- **Type:** Accessories
- **Tags:** accessories, filters-and-lna, rtl-sdr

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2950.00 INR | In stock |

## Images

- RTL-SDR 50MHz - 4Ghz Wideband LNA - RFCharge
- RTL-SDR 50MHz - 4Ghz Wideband LNA - RFCharge
- RTL-SDR 50MHz - 4Ghz Wideband LNA - RFCharge

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> Source: [RFCharge](https://rfcharge.com/products/rtl-sdr-50mhz-4ghz-wideband-lna)
> Updated: 2026-07-10