Nooelec NESDR SMArt v4 Bundle - Premium RTL-SDR w/ Aluminum Enclosure, 0.5PPM TCXO, SMA Input & 3 Antennas. RTL2832U & R820T2-Based

SDR improvements:

The NESDR SMArt contains the same ultra-low phase noise 0.5PPM TCXO used in our much smaller Nano 2+ (TCXO specifications below), ensuring ultimate tuning stability in nearly any environment.
In the quest for lower noise, the power supply section was redesigned to implement an RF-suitable voltage regulator with under 10 µVRMS of noise. That is at least 10x lower than other designs!
A quality shielded inductor was used in the power supply to improve EMI rejection.
The included aluminum enclosure ensures stray EMI stays where it belongs--away from the sensitive RF circuitry.
Lower board-level temperatures further improves the SDR noise floor.

Temperature improvements:

A custom heatsink is affixed to the primary PCB with 3M thermal adhesive, to wick heat away from the circuit board and towards the enclosure.
2 pieces of silicone thermal pad spread the rest of the heat away from the device hot spots.
Power consumption has been reduced by an average of 10mA, which means less heat is generated compared to other designs.
The result is much lower board-level temperatures--increasing stability, improving sensitivity and ensuring maximum frequency range capability. The changes were first simulated, and then field-tested with a Flir E8.

Form factor improvements:

The NESDR SMArt was designed to minimize annoying USB port occlusion. We re-designed the SDR from the ground up to ensure the SMArt can be used side by side in any USB-compliant device, including tightly-spaced embedded devices. There is no need to remove the enclosure to run multiple SDRs beside one another!
The form factor re-design allowed us to move to the more universal SMA antenna input.

Antenna improvements:

The included antenna has been redesigned with a wider base to ensure physical stability with the included longer telescopic antenna mast
A stronger magnet in the antenna base facilitates a wide range of mounting options
Low-loss RG58 feed cable is used instead of higher-loss RG316 and RG174
Feed cable increased to 2m (6.5') for easier installations
Male SMA connector on the antenna cable for easy connectivity to the NESDR SMArt and other SMA-input RF devices
Three antenna masts are now included! A telescopic mast with a variable frequency capability, a fixed frequency 433MHz (ISM) antenna mast, and a fixed frequency UHF (GSM) antenna mast

Included:

SDR Specifications:

SDR TCXO Specifications:

Antenna Specifications:

Wide base with super-strong magnet within base for easy mounting
Low-loss RG58 feed cable
2m (6.5') cable, twice as long as most low cost SDR antennae
Heatshrinked male SMA connector for direct connection to the SDR or our other SMA-connected accessories like the Ham It Up
INSTALLATION GUIDE

SKU	100700
USB Interface IC	RTL2832U
Tuner IC	R820T2
Frequency Range (approximate)	25MHz - 1750MHz
TCXO clock	Yes
Antenna Connector Type	SMA Female
Antenna Included?	Yes
Remote Included?	No
Additional Accessories	3 antenna masts for included antenna base