--- product_id: 82261532 title: "Wideband Low Noise Amplifier Bias Tee Powered" brand: "rtl-sdr blog" price: "KD 10.76" currency: KWD in_stock: true reviews_count: 13 category: "Rtl Sdr Blog" url: https://www.desertcart.com.kw/products/82261532-wideband-low-noise-amplifier-bias-tee-powered store_origin: KW region: Kuwait --- # 18.7 dB high gain @ 900 MHz 50 MHz - 4 GHz ultra-wideband 0.6 dB ultra-low noise figure Wideband Low Noise Amplifier Bias Tee Powered **Brand:** rtl-sdr blog **Price:** KD 10.76 **Availability:** βœ… In Stock ## Summary > πŸš€ Amplify your SDR game with unmatched clarity and range! ## Quick Answers - **What is this?** Wideband Low Noise Amplifier Bias Tee Powered by rtl-sdr blog - **How much does it cost?** KD 10.76 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/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 - β€’ **Powerful Signal Gain:** Boost your signal strength by 18.7 dB, unlocking hidden frequencies and distant sources. - β€’ **Robust ESD Protection:** Dual-layer ESD and GDT safeguards keep your investment safe near outdoor antennas. - β€’ **Premium Low Noise Figure:** Experience crystal-clear reception with a noise figure as low as 0.6 dB @ 900 MHz. - β€’ **Ultra-Wide Frequency Range:** Seamlessly covers 50 MHz to 4000 MHz for versatile signal boosting. - β€’ **Bias Tee Powered Convenience:** Easily powered via 3-5V bias tee, compatible with RTL-SDR V3 for plug-and-play setup. ## Overview The RTL-SDR Blog Wideband Low Noise Amplifier is a bias tee powered LNA designed for SDR enthusiasts seeking superior signal clarity and range. Operating 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 reception quality. Its bias tee power compatibility and robust ESD protection make it ideal for close antenna placement, delivering professional-grade performance for ADS-B and wideband radio applications. ## 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. Review: does exactly as advertised. - Because there's no instructions, there are some adjustments you need to make for it to do it's best. 1. Connect it as close to the antenna and far away from the dongle as possible. 2. If your software supports it, turn down the LNA in your dongle if it has one. (RTL-SDR V3 has one) I used it for ADS-B decoding and had to switch from dump1090 to rtl1090 and the difference was amazing. dump1090 gave me about 10 planes max with a 50 mile radius, I switched to RTL1090 and I now get 20-30 planes on average with a 200 mile radius. (I live near a major city airport) Using the modded rtlsdr.dll in SDR#, I turned down the LNA to about 25% above 0 and I receive every police band (460MHZ) in the city with incredible clarity. This is an excellent product and just remember, you may have to change some of your settings, but it's well worth it, especially for the price. Review: Good - Worked fine. ## 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 | #35,594 in Electronics ( See Top 100 in Electronics ) #200 in Audio Component Amplifiers | | Brand | RTL-SDR Blog | | Brand Name | RTL-SDR Blog | | Customer Reviews | 4.5 out of 5 stars 318 Reviews | | 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) ![Wideband Low Noise Amplifier Bias Tee Powered - Image 2](https://m.media-amazon.com/images/I/61KSM+UDqbL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ does exactly as advertised. *by S***N on April 11, 2020* Because there's no instructions, there are some adjustments you need to make for it to do it's best. 1. Connect it as close to the antenna and far away from the dongle as possible. 2. If your software supports it, turn down the LNA in your dongle if it has one. (RTL-SDR V3 has one) I used it for ADS-B decoding and had to switch from dump1090 to rtl1090 and the difference was amazing. dump1090 gave me about 10 planes max with a 50 mile radius, I switched to RTL1090 and I now get 20-30 planes on average with a 200 mile radius. (I live near a major city airport) Using the modded rtlsdr.dll in SDR#, I turned down the LNA to about 25% above 0 and I receive every police band (460MHZ) in the city with incredible clarity. This is an excellent product and just remember, you may have to change some of your settings, but it's well worth it, especially for the price. ### ⭐⭐⭐⭐⭐ Good *by W***A on February 27, 2026* Worked fine. ### ⭐⭐⭐⭐⭐ Not magical, but a solid product *by D***P on October 4, 2024* There’s a lot to like about this LNA, but it didn’t do miracles for me. This is my first LNA so I’m not sure what to expect, but I was hoping to be able to turn off all amplification on the SDR side. This allowed me to lower it, but not completely disable it. I am using it to amp for two sdrs so maybe that’s my problem. Maybe I need two. That being said, it’s built like a tank, accepted power from my old silver SDR, and I’m running it in a hot attic with no issues so far. Overall, a solid product. ## Frequently Bought Together - RTL-SDR Blog Wideband Low Noise Amplifier Bias Tee Powered - Broadcast FM Block Filter (88-108 MHz Block) by RTL-SDR Blog - RTL-SDR Blog V4 R828D RTL2832U 1PPM TCXO HF Bias Tee SMA Software Defined Radio with Dipole Antenna Kit --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.kw/products/82261532-wideband-low-noise-amplifier-bias-tee-powered](https://www.desertcart.com.kw/products/82261532-wideband-low-noise-amplifier-bias-tee-powered) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-22*