---
product_id: 163382310
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: "€ 57.47"
currency: EUR
in_stock: true
reviews_count: 8
category: "Noo Elec"
url: https://www.desertcart.it/products/163382310-sma-dc-block-in-line-50-ohm-50khz-8ghz-connector
store_origin: IT
region: Italy
---

# Blocks up to 50V DC voltage 50kHz-8GHz ultra-wide freq range Ultra-low insertion loss <0.3dB 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:** € 57.47
**Availability:** ✅ In Stock

## Summary

> ⚙️ Block DC, Boost Confidence — The RF guardian your setup deserves!

## 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?** € 57.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/163382310-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

- • **Seamless Signal Integrity:** Maintain crystal-clear RF signals with <0.3dB insertion loss up to 6GHz—no compromises on performance.
- • **Trusted Support & Service:** Enjoy peace of mind with a full 2-year direct support from NooElec, keeping your gear future-proof and hassle-free.
- • **Broad Spectrum Compatibility:** Operate confidently across an expansive 50kHz to 8GHz frequency range, ideal for cutting-edge RF and radio setups.
- • **Power & Protection Perfected:** Safeguard your sensitive equipment by blocking DC voltages up to 50V and handling RF power up to 2W effortlessly.
- • **Precision Laser-Etched Durability:** Never lose track—laser-etched markings ensure lifetime readability and professional-grade reliability.

## Overview

The NooElec SMA DC Block is a precision-engineered in-line connector designed to block DC voltages up to 50V while maintaining ultra-low insertion loss (<0.3dB up to 6GHz) across a wide 50kHz to 8GHz frequency range. With laser-etched markings for durability and a 2W max power rating, it ensures reliable RF performance and longevity, backed by a 2-year direct support service from NooElec.

## 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!

Review: Works perfectly fine - Despite the high price, this works perfectly.
Review: Good product - My LNA module wasn’t working properly without it.

## 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 | 55,247 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,654 in Audio & Video Adapters |
| Guaranteed software updates until | unknown |
| Item model number | Nooelec 8GHz SMA DC Block |
| Manufacturer | Nooelec Inc. |
| Product Dimensions | 2 x 1 x 1 cm; 5 g |

## Product Details

- **Colour:** Silver
- **Connector type:** SMA
- **Item dimensions L x W x H:** 20 x 10 x 10 millimetres
- **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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly fine
*by L***N on 14 February 2024*

Despite the high price, this works perfectly.

### ⭐⭐⭐⭐⭐ Good product
*by A***S on 12 May 2020*

My LNA module wasn’t working properly without it.

### ⭐⭐⭐ Highly priced
*by L***S on 20 August 2020*

Not bad but very expensive for what it is. Bought it just because I trust the brand. Nasty price though.

## 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
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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-28*