If i purchase this amplifier will i require a dc block with the airnav flightstick, powering the amplifier with usb "external power" (no bias tee)

I would say yes, Airspy R2 wants one and yours is broadly similar

May need dc block when using usb.. does that mean it (cool!) adds bias-tee?

I used it with USB and never need led a dc block. It wont add bias-tee, only the sdr sticks do

Doesnt rtl-sdr already have 40 db variable gain, how does this differ?

Hi! The noise figure of a system is dominated by the first LNA in a chain. This LNA has a noise figure well under 1dB, while an RTL-SDR has a noise figure above 6dB. This is a massive difference and so this LNA would give you a much better SNR while still allowing you to increase the overall gain even further with the built in LNA of the RTL-SDR. Hope this helps!

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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

Product ID: 159591869

Details

Brand
NooElec
Colour
black
Compatible devices
Laptop Radio
Connectivity technology
Radio
Connector type
SMA

📶20MHz-4000MHz ultra-wideband

🔋3 power input options (Bias Tee, USB, DC)

🛡️Aluminum enclosure with EMI & ESD protection

€ 92.27

Duties & taxes included

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Amplify your SDR game with unmatched clarity and power!

TRIPLE POWER FLEXIBILITY - Power via Bias Tee, USB, or DC adapter—adapt to any setup effortlessly.
PREMIUM NOISE PERFORMANCE - Lower noise figure and higher gain than SPF5189Z-based LNAs for crystal-clear signals.
RUGGED ALUMINUM SHIELDING - Durable enclosure with EMI and ESD protection ensures stable, interference-free operation.
ULTRA WIDE FREQUENCY RANGE - Seamlessly covers 20MHz to 4GHz for versatile SDR applications.
MADE IN NORTH AMERICA WITH WARRANTY - Quality you can trust backed by a 2-year warranty—stay ahead with confidence.

The NooElec LaNA is a high-performance, ultra-wideband low-noise amplifier module designed for software-defined radio enthusiasts and professionals. Operating from 20MHz to 4GHz, it offers superior gain and noise reduction compared to similar LNAs, housed in a robust aluminum enclosure with EMI and ESD protection. It supports versatile powering options including Bias Tee, USB, and DC input, making it adaptable to various SDR setups. Proudly made in North America, it comes with a 2-year warranty, ensuring reliability and peace of mind.

Specifications

ASIN	B07XNLJ9X2
AntennaDescription	Radio
Best Sellers Rank	45,513 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 21 in Radio Frequency Transceivers
Brand Name	NooElec
Colour	black
Compatible Devices	Laptop, Radio, Desktop, Tablet, Smartphone
Connector Type	SMA
Country of Origin	USA
Customer Reviews	4.2 4.2 out of 5 stars (761)
EU Spare Part Availability Duration	2 Years
Includes Remote	No
Item Weight	50 Grams
Manufacturer	Nooelec Inc.
Manufacturer Part Number	100812
Model Number	LaNA
Network Connectivity Technology	Radio Frequency
Tuner Type	FM AM Digital
UPC	616469146564

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