Does it natively support active antennas without using a Bias-T?

No, not on this particular model. A native bias-tee of any sort will cause loss (reduction in sensitivity), regardless of design. As such, our general recommendation is to use a well-designed external bias tee whenever possible--as it can be completely removed from circuit when not needed. If impossible, or if your budget will not permit such a solution, the next best thing is having 2 SDRs, one with an active or switchable native bias-tee and one completely without such a circuit for passive antennas. Of course, if you are planning on only EVER using an active antenna with your SDR, an always-on or switchable bias-t is just fine :)Hope this helps! Please feel free to reach out to us any time with questions or concerns, and thank you for your support

Does it need driver files for Window notebook? If so, where can I get the driver?

A file named zadig appears to be magic in getting RTLSDR up and running. I just had to go back thru this again when I tried to fire up my RTL system for the first time in maybe six months. Do a web search for "zadig" and download the file from one of the sources (not many). Open it up and run the zadig.exe file. The hard part is getting the right configurations into thr zadig window. Then hit the "replace file" button. If you got it right, things should start working. I'm sure you can find more detailed and complete guidance from some web sights, in particular RTLSDR.com, but this gives you the general idea. Good luck with it - the SMArt makes quite a nice little shortwave radio with with an HF upconverter feeding the SMArt.

If I want to listen to trunked P25 or trunked DMR, are two dongles required?

Yes, you can use ONE sdr now to listen to P25 phase I and phase ii. How it works is the dongle will monitor the control channel and the transmission channel within the bandwidth of the sdr. You will get better and more calls with 2 sdrs. The key is to find the frequency of the P25 system you want to monitor and build a good antenna for it, get it elevated.

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📡 Elevate your signal game—be the RF insider everyone envies!

SLEEK RUGGED DESIGN - Premium black brushed aluminum housing with integrated heat sink for durability and performance.
UNMATCHED FREQUENCY RANGE - Capture signals from 100 kHz up to 1.75 GHz—never miss a beat in the RF spectrum.
VERSATILE SIGNAL RECEPTION - Decode everything from AM/FM, ADS-B aircraft tracking, NOAA weather satellites to public security radios.
CROSS PLATFORM COMPATIBILITY - Seamlessly works with Windows, Mac OS, Linux, and Android—your radio scanner anywhere, anytime.
PRECISION TUNING WITH 0 5 PPM TCXO - Experience ultra-low phase noise and rock-solid frequency stability for crystal-clear reception.

The NooElec NESDR SMArt is a premium RTL-SDR receiver featuring a wide 100 kHz to 1.75 GHz frequency range, ultra-stable 0.5 PPM TCXO for precise tuning, and a durable black aluminum enclosure. Compatible across major OS platforms, it enables professional-grade reception of diverse RF signals including aviation, weather satellites, and public safety communications. Designed and built in North America, it offers enhanced sensitivity and noise reduction for the discerning radio enthusiast or professional.

Reviews

T**E

Good Product

Good product. But make sure that you have Antenna or you need to buy separately along with this.

24.01.2022

H**H

Best for Beginners

The quality of the product is good. It would be good if the co-axial cable connector is little bigger in diameter.

31.05.2020

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Brand	NooElec
Manufacturer	Nooelec Inc.
Series	NESDR SMArt SDR
Colour	Black (Black)
Item Height	1 Centimeters
Item Width	1 Centimeters
Product Dimensions	9 x 1 x 1 cm; 30 g
Item model number	NESDR SMArt SDR
Computer Memory Type	EEPROM
Graphics Card Interface	Integrated
Number of USB 2.0 Ports	1
Tuner Technology	AM FM
Power Source	USB
Are Batteries Included	No
Included Components	Software Defined Radio (RTL-SDR)
Manufacturer	Nooelec Inc.
Item Weight	30 g

NooElec NESDR SMArt - Premium RTL-SDR w/ Aluminum Enclosure, 0.5PPM TCXO, SMA Input. RTL2832U & R820T2-Based Software Defined Radio

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