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: 361228457

Details

Colour
silver
Connector type
Coaxial
Item dimensions L x W x H
10 x 10 x 20
Specific uses for product
Antenna

⚡Blocks up to 50V DC voltage

📶50kHz-8GHz ultra-wide freq range

🔇Ultra-low insertion loss <0.3dB

201.77 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Elevate your RF game with precision blocking power!

BROADBAND COMPATIBILITY - Operate confidently across an expansive 50kHz to 8GHz spectrum—future-proof your setup.
SEAMLESS SIGNAL INTEGRITY - Maintain crystal-clear RF signals with <0.3dB insertion loss up to 6GHz—because every decibel counts.
TRUSTED SUPPORT WARRANTY - Enjoy peace of mind with a full 2-year direct support service from NooElec—because reliability matters.
POWERFUL VOLTAGE PROTECTION - Safeguard your sensitive radio gear by blocking DC voltages up to 50V effortlessly.
PRECISION LASER ETCHED MARKINGS - Durable, fade-resistant labels ensure your gear stays organized and professional-looking for years.

The NooElec SMA DC Block is a compact, high-performance inline coaxial connector designed to block DC voltages up to 50V while maintaining ultra-low insertion loss (<0.3dB to 6GHz) across a wide frequency range of 50kHz to 8GHz. Featuring laser-etched markings for durability and backed by a 2-year manufacturer support, it’s the essential accessory for professional-grade radio and RF test equipment setups.

Specifications

ASIN	B07YYLHJKS
Best Sellers Rank	#97,678 in Electronics ( See Top 100 in Electronics ) #210 in Radio Communication Products
Brand	NooElec
Color	Silver
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	Coaxial
Connector type	Coaxial
Current Rating	50 Amps
Customer Reviews	4.5 out of 5 stars 215 Reviews
Finish	Laser
Input Voltage	50 Volts
Item Dimensions	10 x 10 x 20 millimeters
Item Weight	5 Grams
Item dimensions L x W x H	10 x 10 x 20 millimeters
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
Specific uses for product	Antenna
UPC	616469146625
Warranty Type	Limited

Reviews

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

N**S

Awesome product

Performs as stated. Well built. Very happy with it.

10.12.2023

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201.77 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

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TrustScore 4.5 | 7,300+ reviews

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