--- product_id: 164295574 title: "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" brand: "nooelec" price: "192.33 DT" currency: TND in_stock: true reviews_count: 13 category: "Noo Elec" url: https://www.desertcart.tn/products/164295574-nooelec-sma-dc-block-in-line-50-ohm-50khz-8ghz store_origin: TN region: Tunisia --- # Blocks up to 50V DC voltage 50kHz-8GHz ultra-wide freq range <0.3dB ultra-low insertion loss 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 **Brand:** nooelec **Price:** 192.33 DT **Availability:** ✅ In Stock ## Summary > 🔌 Block the DC, Boost the Signal — Stay Ahead in the RF Game! ## Quick Answers - **What is this?** 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 by nooelec - **How much does it cost?** 192.33 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/164295574-nooelec-sma-dc-block-in-line-50-ohm-50khz-8ghz) ## 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 - • **Compact Yet Mighty:** Sleek silver design with a tiny 0.79-inch footprint, perfect for professional setups without clutter. - • **Whisper-Quiet Signal:** Ultra-low insertion loss under 0.3dB ensures your signal stays pure and strong up to 6GHz. - • **Power-Proof Protection:** Blocks up to 50 volts DC, safeguarding your sensitive radio and test equipment effortlessly. - • **Durability You Can Trust:** Laser-etched markings guarantee permanent, fade-proof labeling for a lifetime of reliability. - • **Seamless Frequency Mastery:** Operates flawlessly from 50kHz to 8GHz, covering all your RF needs with precision. ## Overview The NooElec SMA DC Block is a precision-engineered inline connector designed for RF and test equipment, operating across an ultra-wide 50kHz to 8GHz frequency range. It blocks DC voltages up to 50V and handles RF power up to 2 watts, all while maintaining an ultra-low insertion loss below 0.3dB up to 6GHz. Its laser-etched markings ensure durability, making it a reliable, compact solution for professionals demanding clean, interference-free signals. ## 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; will not fade or rub off Review: Works great! - This little DC block filter works great! Shows as an open at DC, and has basically flat response from 10 kHz to at least 3 GHz. See attached charts from my testing with a Rigol oscilloscope and an HP VNA. Review: Easy to install and no issues - I use this to isolate my LNA from the rest of the electronics. After nearly a year I have had no problems. ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07YYLHJKS | | Best Sellers Rank | #889 in Computer External Components | | Brand | NooElec | | Color | Silver | | Compatible Devices | Radio Frequency (RF) equipment and test equipment with SMA connectors requiring DC voltage blocking | | Connector Type | Radio Frequency | | Current Rating | 50 A | | Customer Reviews | 4.7 out of 5 stars 219 Reviews | | Finish | Laser-etched | | Finish Type | Laser-etched | | Input Voltage | 50 volts | | Item Dimensions | 0.39 x 0.39 x 0.79 inches | | Item Weight | 5 g | | Item dimensions L x W x H | 0.39 x 0.39 x 0.79 inches | | Manufacturer | Nooelec Inc. | | 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 | | UPC | 616469146625 | | Warranty Description | 2 Year Warranty | | Warranty Type | Limited | ## Product Details - **Brand:** NooElec - **Color:** Silver - **Compatible Devices:** Radio Frequency (RF) equipment and test equipment with SMA connectors requiring DC voltage blocking - **Connector Type:** Radio Frequency - **Item dimensions L x W x H:** 0.39 x 0.39 x 0.79 inches ## Images ![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 - 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great! *by J***. on December 30, 2023* This little DC block filter works great! Shows as an open at DC, and has basically flat response from 10 kHz to at least 3 GHz. See attached charts from my testing with a Rigol oscilloscope and an HP VNA. ### ⭐⭐⭐⭐⭐ Easy to install and no issues *by A***. on May 18, 2024* I use this to isolate my LNA from the rest of the electronics. After nearly a year I have had no problems. ### ⭐⭐⭐⭐⭐ Quality safety device *by O***I on January 20, 2024* This can save your expensive analyzer. Always have a DC blocker for your spectrum analyzer. ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/164295574-nooelec-sma-dc-block-in-line-50-ohm-50khz-8ghz](https://www.desertcart.tn/products/164295574-nooelec-sma-dc-block-in-line-50-ohm-50khz-8ghz) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-31*