---
product_id: 82261532
title: "Wideband Low Noise Amplifier Bias Tee Powered"
brand: "rtl-sdr blog"
price: "€ 35.10"
currency: EUR
in_stock: true
category: "Rtl Sdr Blog"
url: https://www.desertcart.pt/products/82261532-wideband-low-noise-amplifier-bias-tee-powered
store_origin: PT
region: Portugal
---

# 0.6 dB ultra-low noise figure 50 MHz - 4 GHz ultra-wideband 18.7 dB high gain @ 900 MHz Wideband Low Noise Amplifier Bias Tee Powered

**Brand:** rtl-sdr blog
**Price:** € 35.10
**Availability:** ✅ In Stock

## Summary

> 🚀 Amplify your signal, amplify your edge!

## Quick Answers

- **What is this?** Wideband Low Noise Amplifier Bias Tee Powered by rtl-sdr blog
- **How much does it cost?** € 35.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/82261532-wideband-low-noise-amplifier-bias-tee-powered)

## Best For

- rtl-sdr blog enthusiasts

## Why This Product

- Trusted rtl-sdr blog brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful Signal Gain:** Boost your signal strength by 18.7 dB to dominate weak transmissions.
- • **Robust ESD Protection:** Dual-layer ESD and GDT safeguards keep your investment safe near outdoor antennas.
- • **Premium Low Noise Figure:** Experience crystal-clear reception with just 0.6 dB noise at 900 MHz.
- • **Ultra-Wide Frequency Range:** Seamlessly covers 50 MHz to 4000 MHz for versatile signal boosting.
- • **Bias Tee Powered Convenience:** Easily powered via 3-5V bias tee—perfect for streamlined setups.

## Overview

The RTL-SDR Blog Wideband Low Noise Amplifier is a bias tee powered, high-performance LNA designed for frequencies from 50 MHz to 4 GHz. With an ultra-low noise figure of 0.6 dB and a gain of 18.7 dB at 900 MHz, it significantly enhances weak signals for SDR applications. Featuring robust ESD protection and requiring 3-5V bias tee power, it’s ideal for professionals seeking reliable, wideband signal amplification.

## Description

Includes 1x RTL-SDR Blog Wideband LNA (Bias Tee Powered) and 1x SMA male to SMA male adapter. This is a general purpose SPF5189Z based wideband LNA. Works from 50 MHz to 4 GHz with a noise figure of less than 1dB and a gain of 18.7dB @ 900 MHz. Requires bias tee power, but there is an internal header which can be used to switch to external power, although you won't be able to use the enclosure in that case. If you're looking to improve ADS-B performance we recommend our Triple Filtered ADS-B LNA. Please note again: Requires 3 - 5v bias tee power. The RTL-SDR V3 provides 4.5v so is suitable. IMPORTANT ESD NOTE: If you use this LNA placed close to an outdoor antenna, please ensure that your antenna is sufficiently grounded. There is a fast ESD diode, and GDT on the LNA PCB for dual protection, but if the antenna is not grounded the effectiveness of ESD protection components will be severely reduced, and you run the risk of damaging the LNA.

## Features

- Frequency range of 50 MHz to 4000 MHz
- Noise figure = 0.6dB @ 900 MHz
- OIP3 = 39.5 dBm @ 900 MHz, P1 Saturation = 22.7 dBm @ 1960 MHz
- Gain = 18.7 dB @ 900 MHz
- Bias Tee Powered (Needs 3-5v bias tee power)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G14Q6XX |
| Best Sellers Rank | #18,883 in Electronics ( See Top 100 in Electronics ) #93 in Audio Component Amplifiers |
| Brand Name | RTL-SDR Blog |
| Customer Reviews | 4.6 4.6 out of 5 stars (323) |
| Manufacturer | RTL-SDR Blog |
| Material Type | Pcb, Electronic Components |
| Maximum Supply Voltage | 3 Volts |
| Minimum Supply Voltage | 3 Volts |
| Model | WBLNA |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Output Power | 6.9 Watts |
| Package Type Name | box |
| Part Number | WBLNA |
| Specification Met | Performance Specifications Met |
| UPC | 651989513519 |
| Voltage | 5 Volts |

## Product Details

- **Manufacturer:** RTL-SDR Blog
- **Maximum Supply Voltage:** 3 Volts
- **Minimum Supply Voltage:** 3 Volts
- **Mounting Type:** Surface Mount
- **Voltage:** 5 Volts

## Images

![Wideband Low Noise Amplifier Bias Tee Powered - Image 1](https://m.media-amazon.com/images/I/71XgfiVZKRL.jpg)

## Questions & Answers

**Q: Can/should this connect to the flight aware pro stick?  should a nesdr smartee v2 sdr - premium rtl-sd be used in addition/in place of the pro stick?**
A: You'll need an external bias tee to connect it to the FlightAware prostick. Our LNAs are designed to be used with SDRs that have bias tees, like our RTL-SDR Blog V3. A smartee would also work. However, if you really want improved ADS-B performance, I would strongly suggest using our Triple Filtered ADS-B LNA https://www.amazon.com/dp/B078TBG4H8, as with that you would see much better ADS-B performance when combined with a bias tee RTL-SDR or external bias tee.

**Q: I'd like to use this lna for hydrogen line detection (1420mhz) since the sawbird h+ is currently unavailable.  will this work?**
A: Theoretically yes, it will "see" a spike at 1420 mhz but you will need an SDR program and maybe a raspberry pi with a sound card.

**Q: at 6 and 5 giga herz, can we  use it, with less amplification ? what will be the ampluficatin ??**
A: No, only good to about 4.0 ghz.

**Q: Can this be connected directly to a rtl-sdr? it is currently too cold to get to the antenna to hook it up there but i do not want to mess anything up**
A: This preamp requires +5vdc be applied through its output connector to operate the transistor inside the amp.Some SDR have 5vdc present at there input connector some don't.See if a DC voltmeter can detect a voltage to its input connector. If not a power injector will have to be bought and placed between the SDR and this preamp.A seperate +5dc power source  would be needed to run the power injector and the preamp.

## Frequently Bought Together

- RTL-SDR Blog Wideband Low Noise Amplifier Bias Tee Powered
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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-20*