{"product_id":"rtl-sdr-blog-wideband-lna-with-bias-tee-powered-50-mhz-4-ghz-0-6-db-nf-900-mhz-18-7-db-gain","title":"RTL-SDR Blog Wideband LNA with Bias Tee Powered | 50 MHz–4 GHz, 0.6 dB NF @ 900 MHz, 18.7 dB Gain","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe RTL-SDR Blog Wideband LNA with Bias Tee Powered is a compact, front-end preamplifier designed for versatile wideband reception. Built around a SPF5189Z based amplifier, it covers a broad spectrum from 50 MHz up to 4 GHz, delivering a clean, low-noise path for your SDR setup. The module ships with a ready-to-use SMA adapter, so you can connect quickly to most RTL-SDR dongles, receivers, or test rigs and begin exploring a wider range of signals right away.\u003c\/p\u003e\n\u003cp\u003eDesigned for hobbyists and experimenters, this LNA emphasizes a careful balance of noise, gain, and linearity. When placed in front of your SDR, it can help reveal weak or distant signals that might otherwise be buried in front-end noise, especially during band-rich tests like VHF\/UHF scanning, airband reception, or general spectrum analysis. While individual results vary with antenna, weather, and local interference, the device is built to offer a higher signal-to-noise environment across the band you care about.\u003c\/p\u003e\n\n\u003ch3\u003eKey specs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFrequency range: 50 MHz to 4000 MHz\u003c\/li\u003e\n  \u003cli\u003eNoise figure: 0.6 dB at 900 MHz\u003c\/li\u003e\n  \u003cli\u003eGain: 18.7 dB at 900 MHz\u003c\/li\u003e\n  \u003cli\u003eOIP3: 39.5 dBm at 900 MHz\u003c\/li\u003e\n  \u003cli\u003eP1dB: 22.7 dBm at 1960 MHz\u003c\/li\u003e\n  \u003cli\u003eBias Tee Powered: requires 3–5 V bias-tee power\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x RTL-SDR Blog Wideband LNA with Bias Tee Powered\u003c\/li\u003e\n  \u003cli\u003e1x SMA male to SMA male adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePower and installation notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBias tee power: 3–5 V required for operation\u003c\/li\u003e\n  \u003cli\u003eInternal header option to switch to external power (may affect enclosure use)\u003c\/li\u003e\n  \u003cli\u003eRTL-SDR V3 users typically provide around 4.5 V, which is suitable for many setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant safety and usage guidance\u003c\/h3\u003e\n\u003cp\u003eIf you place the LNA near an outdoor antenna, ensure the antenna is properly grounded. The board includes protective ESD components, but grounding helps maintain protection effectiveness and reduces risk to the unit in surge events.\u003c\/p\u003e\n\n\u003ch3\u003eReal-world use and recommendations\u003c\/h3\u003e\n\u003cp\u003eThis LNA is a versatile front end for broad-spectrum experiments and signal spotting. You may notice clearer reception of weak signals across the 50 MHz to 4 GHz range, especially when paired with a suitable antenna and a bias tee power source. For specific use cases such as ADS-B, consider the Triple Filtered ADS-B LNA for targeted improvements in that band, as recommended by RTL-SDR Blog.\u003c\/p\u003e\n\n\u003ch3\u003eSummary\u003c\/h3\u003e\n\u003cp\u003eIf you’re building or upgrading an SDR test rig, this bias-tee powered wideband LNA offers a compact, low-noise path with solid gain across a wide frequency range. It’s a practical starting point for experiments, testing, and real-time spectrum exploration, with flexibility to adapt to external power options and ground safety considerations.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is included in the RTL-SDR Blog Wideband LNA package?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The package includes one wideband LNA module with bias-tee power and one SMA male-to-SMA male adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What power is required and are there grounding considerations?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Requires 3–5 V bias-tee power; if used outdoors, ensure proper grounding for best ESD protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RTL-SDR Blog","offers":[{"title":"Default Title","offer_id":48409781305501,"sku":"B07G14Q6XX","price":28.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/rtl-sdr-blog-wideband-lna-bias-tee-powered-front-view.jpg?v=1781196158","url":"https:\/\/nexoltic.com\/products\/rtl-sdr-blog-wideband-lna-with-bias-tee-powered-50-mhz-4-ghz-0-6-db-nf-900-mhz-18-7-db-gain","provider":"Nexoltic","version":"1.0","type":"link"}