--- product_id: 361228457 title: "SMA DC Block In-Line 50 Ohm 50kHz-8GHz Connector Blocks DC Voltage from your Radio or RF Test Equipment. Ultra-Low Insertion Loss (<0.3dB to 6GHz) and 2 Watts Maximum Power" brand: "nooelec" price: "$57.35" currency: USD in_stock: true category: "Noo Elec" url: https://www.desertcart.us/products/361228457-sma-dc-block-in-line-50-ohm-50khz-8ghz-connector store_origin: US region: United States of America --- # Blocks up to 50V DC voltage 50kHz-8GHz ultra-wide freq range <0.3dB insertion loss to 6GHz SMA DC Block In-Line 50 Ohm 50kHz-8GHz Connector Blocks DC Voltage from your Radio or RF Test Equipment. Ultra-Low Insertion Loss (<0.3dB to 6GHz) and 2 Watts Maximum Power **Brand:** nooelec **Price:** $57.35 **Availability:** βœ… In Stock ## Summary > πŸ”’ Lock in flawless RF protection with NooElec’s SMA DC Block β€” don’t let voltage kill your vibe! ## Quick Answers - **What is this?** SMA DC Block In-Line 50 Ohm 50kHz-8GHz Connector Blocks DC Voltage from your Radio or RF Test Equipment. Ultra-Low Insertion Loss (<0.3dB to 6GHz) and 2 Watts Maximum Power by nooelec - **How much does it cost?** $57.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/361228457-sma-dc-block-in-line-50-ohm-50khz-8ghz-connector) ## Best For - nooelec enthusiasts ## Why This Product - Trusted nooelec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Confidence with Coverage:** Backed by a full 2-year NooElec support warranty β€” because your tech deserves reliable protection. - β€’ **Seamless Signal Integrity:** Ultra-low insertion loss (<0.3dB) ensures crystal-clear RF performance up to 6GHz. - β€’ **Broad Compatibility Spectrum:** Works flawlessly with cell phones, SDRs, amplifiers, and more β€” future-proof your RF chain. - β€’ **Power & Protection Perfected:** Blocks DC voltage up to 50V while handling RF power up to 2W β€” safeguard your gear effortlessly. - β€’ **Precision Laser-Etched Durability:** Permanent markings resist wear, keeping your setup looking sharp and professional. ## Overview The NooElec SMA DC Block is a precision-engineered in-line coaxial connector designed to block DC voltages up to 50V while maintaining ultra-low insertion loss (<0.3dB) across a wide frequency range of 50kHz to 8GHz. Ideal for protecting sensitive radio and RF test equipment, it supports up to 2W RF power and features durable laser-etched markings. Compact and lightweight, it comes with a 2-year manufacturer warranty, making it a trusted choice for professionals seeking reliable signal integrity and device protection. ## Description A high-quality in-line SMA DC Block. 50kHz-8GHz operation. The maximum power is 2W and maximum blocking voltage is 50V. Insertion loss of <0.3dB below 6GHz and <0.8dB below 8GHz. Max VSWR is <1.2 below 6GHz and <1.3 below 8GHz. Laser-etched labeling. Full 2 year support & service! ## Features - A high-quality in-line SMA DC Block designed for operation from 50kHz-8GHz - Designed to block a voltage of up to 50V and for a maximum RF power of 2W - Insertion loss of less than 0.3dB all the way up to 6GHz - The outer markings are laser-etched to ensure longevity of the labeling for the life of the device - Full 2 year support & service direct through Nooelec ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07YYLHJKS | | Best Sellers Rank | #68,582 in Electronics ( See Top 100 in Electronics ) #127 in Radio Communication Products | | Brand | NooElec | | Color | silver | | Compatible Devices | Cell Phones, Game Consoles, Headset, Tablets, Laptop, Cameras, Amplifiers, Speakers, Monitors, Projectors, PC, MP3 Players, Musical Instruments, Printers, GPS | | Connector Type | Coaxial | | Current Rating | 50 Amps | | Customer Reviews | 4.6 4.6 out of 5 stars (214) | | Finish | Laser | | Input Voltage | 50 Volts | | Item Dimensions | 10 x 10 x 20 millimeters | | Item Weight | 5 Grams | | Manufacturer | NooElec | | Mfr Part Number | 100816 | | Model Number | Nooelec 8GHz SMA DC Block | | Nominal Power | 2 Watts | | Number of Items | 1 | | Number of Ports | 1 | | Package Quantity | 1 | | Power Plug Type | No Plug | | Specific Uses For Product | Antenna | | UPC | 616469146625 | | Warranty Type | Limited | ## Product Details - **Colour:** silver - **Connector type:** Coaxial - **Item dimensions L x W x H:** 10 x 10 x 20 millimeters - **Specific uses for product:** Antenna ## Images ![SMA DC Block In-Line 50 Ohm 50kHz-8GHz Connector Blocks DC Voltage from your Radio or RF Test Equipment. Ultra-Low Insertion Loss (<0.3dB to 6GHz) and 2 Watts Maximum Power - Image 1](https://m.media-amazon.com/images/I/61P600j7t3L.jpg) ## Questions & Answers **Q: Is this an inner/outer dc block? in other words, does it block dc through the center conductor and the through the outer shield?** A: There is no way for it to block power through the outer shield as there is no insulator on the exterior metal. Power is only blocked through the center connection. **Q: Does this go in between the lna and the sdr or betwen the lna and the antenna ?** A: Hi, it depends on what you are using it for! If you contact us at support.nooelec.com with details we'll be happy to help, thanks :) **Q: Is this what you use between noaa and goes lnas and the sdrs nooelec makes? is it enough to use the power plugs for the lna's?** A: Its to protect your SDR from the power an LNA uses that might feed back through the antenna connection. For that it's worked great for me. **Q: which way do I connect this?** A: Doesn't matter. Thanks ## Frequently Bought Together - NooElec SMA DC Block in-Line 50 Ohm 50kHz-8GHz Connector Blocks DC Voltage from Your Radio or RF Test Equipment. Ultra-Low Insertion Loss (<0.3dB to 6GHz) and 2 Watts Maximum Power - Nooelec Lana - Ultra Low-Noise Amplifier (LNA) Module for RF & Software Defined Radio (SDR) with Enclosure & Accessories. Wideband 20MHz-4000MHz Frequency Capability with Bias Tee & USB Power Options - SDTC Tech 5pcs Coaxial Coax Cable Assembly SMA Male to SMA Male Antenna Extender Cable Adapter Jumper(6 inch/15cm) --- ## 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.us/products/361228457-sma-dc-block-in-line-50-ohm-50khz-8ghz-connector](https://www.desertcart.us/products/361228457-sma-dc-block-in-line-50-ohm-50khz-8ghz-connector) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*