Is this an inner/outer dc block? in other words, does it block dc through the center conductor and the through the outer shield?

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.

Does this go in between the lna and the sdr or betwen the lna and the antenna ?

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 :)

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?

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.

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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 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

Product ID: 163382310

Details

Brand
NooElec
Colour
Silver
Connector type
SMA
Item dimensions L x W x H
10 x 10 x 20

⚡Blocks up to 50V DC voltage

📶50kHz-8GHz ultra-wide freq range

🔇<0.3dB ultra-low insertion loss

250.94 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Block DC, Boost Confidence — The SMA DC Block that means business!

BROAD FREQUENCY MASTERY - Operates flawlessly across a massive 50kHz to 8GHz spectrum—future-proof your setup.
SEAMLESS SIGNAL INTEGRITY - Experience ultra-low insertion loss (<0.3dB) up to 6GHz for crystal-clear RF performance.
TRUSTED SUPPORT WARRANTY - Backed by a full 2-year direct support from NooElec, because your tech deserves the best.
POWERFUL VOLTAGE PROTECTION - Blocks DC voltage up to 50V, safeguarding your sensitive radio and RF equipment effortlessly.
PRECISION LASER ETCHED DURABILITY - Permanent, fade-resistant markings ensure your gear stays identifiable for life.

The NooElec SMA DC Block is a precision-engineered inline connector designed to block DC voltage up to 50V while maintaining ultra-low insertion loss (<0.3dB) across 50kHz to 6GHz frequencies, extending up to 8GHz with minimal loss. Featuring laser-etched markings for durability and backed by a 2-year direct manufacturer support, it’s the essential RF accessory for professionals demanding reliable signal integrity and equipment protection.

Specifications

ASIN	B07YYLHJKS
Best Sellers Rank	57,189 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,846 in Audio & Video Adapters
Brand	NooElec
Brand Name	NooElec
Colour	Silver
Compatible Devices	Cell Phones, Game Consoles, Headset, Tablets, Laptop, Cameras, Amplifiers, Speakers, Monitors, Projectors, PC, MP3 Players, Musical Instruments, Printers, GPS
Compatible devices	Cell Phones, Game Consoles, Headset, Tablets, Laptop, Cameras, Amplifiers, Speakers, Monitors, Projectors, PC, MP3 Players, Musical Instruments, Printers, GPS Compatible devices Cell Phones, Game Consoles, Headset, Tablets, Laptop, Cameras, Amplifiers, Speakers, Monitors, Projectors, PC, MP3 Players, Musical Instruments, Printers, GPS See more
Connector Type	SMA
Connector type	SMA
Country of Origin	USA
Current Rating	50 Amps
Customer Reviews	4.5 out of 5 stars 218 Reviews
Finish type	Laser-etched
Input Voltage	50 Volts
Item Dimensions	10 x 10 x 20 millimetres
Item Weight	5 Grams
Item dimensions L x W x H	10 x 10 x 20 millimetres
Manufacturer	Nooelec Inc.
Manufacturer 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
Product Finish Type	Laser-etched
UPC	616469146625
Warranty Type	Lifetime

Reviews

L**N

Works perfectly fine

Despite the high price, this works perfectly.

14.02.2024

A**S

Good product

My LNA module wasn’t working properly without it.

12.05.2020

L**S

Highly priced

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

20.08.2020

N**1

Parfait !

Accessoire qui fonctionne parfaitement bien. Discret et esthétique, il trouve sa place très facilement dans une installation SDR. Je recommande à 100%.

10.05.2020

H**ー

安全性の確保

ＳＤＲ用の保護とスペアナの保護に使っています。もう少し長さが短いと使い勝手が良いのですが、長過ぎます。

20.07.2022

Z**S

Matches Spec

Remember, these are for SHORT TERM use. You do not use them at the top of it's rated DC power while doing TX or RX for long periods (multiple hours), They will get hot, and that will impact your signal.

4.02.2024

G**.

Fa' il suo lavoro

Non proprio economico ma funziona!

15.06.2020

D**A

Gutes Produkt

Funktioniert als erwartet ohne Probleme.

27.07.2026

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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250.94 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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I loved the variety of products available. Will definitely shop again.

2 months ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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