What does this thing do? I don't get it.

It is a digital TV tuner that you plug into your computer. It is meant for Europe's standards, it won't work to receive TV in North America.However, someone figured out how to put it into a mode that just does a raw dump of the binary info it receives. Now everyone all over the world can use it as a digital radio receiver with some free software. You'll need to put an appropriate antenna on it, but it can receive over a range of about 24MHz to 1.75GHz. Go to RTL-SDR dot COM to see a list of software and where to download it.Since it decodes in software, it can receive AM, FM in narrowband and wideband, SSB, digital signals, etc.This particular one has a good 0.5ppm oscillator replacing the rather poor oscillator that most others come with.These receivers are not as good as a full-blown shortwave radio, but at only $25 bucks! There is even software that you can download to use it to receive airplane locator signals and show a virtual radar display on your computer.The most important part of any radio is the antenna. A discone is a fairly wideband antenna. Also, I strongly suggest that you get a USB extension cable to move this away from your computer, because computers are a big source of electrical noise. With mine plugged into my laptop, there was so much RFI from the computer that I could not receive anything. With a 6ft extension, I could pick up the weather radio channels, HAM radio, and shortwave radio stations.

Can anyone tell me why the mini 2+ costs twice as much as the mini 2 since they both have the updated r820t2 chip? also what is the ppm of the mini 2?

The primary difference between the 2 units is the NESDR Mini 2+ contains a high-accuracy TCXO (which are quite expensive). The NESDR Mini 2 is guaranteed to be within +/- 25PPM; the NESDR Mini 2+ is guaranteed to be within +/- 0.5PPM. The difference is rather large and can be crucial for some applications. Please contact us any time if you have further questions, thank you :)

Will this receive ads b and digital tv, if not, why? Thx

Yes to ADS-B. Yes to digital TV if DVB-T is available in your area. If you are in North America, no to digital TV as ATSC signaling is used here. The bandwidth required to receive one channel is larger than this device is capable of. Hope this helps!

Does this reciever pick up digital TV channels?

Hi! Not in the US, no. It is capable of receiving DVB-T video but those signals are not used in the USA. You probably want a USB ATSC tuner. Thanks for your interest!

Brand	NooElec
Country of Origin	USA
Model number	NESDR Mini 2+
Item Weight	70 g
Product Dimensions	14 x 5 x 3 cm; 70 g
Item model number	NESDR Mini 2+
Item Height	3 Centimeters
Item Width	5 Centimeters
Auto Focus Included	No
Connectivity Technology	USB
Voltage	5 Volts
Are batteries included?	No
Hardware Interface Type	USB
Video standard	mpeg 4

NooElec NESDR Mini 2+ 0.5PPM TCXO RTL-SDR & ADS-B USB Receiver Set w/ Antenna, Suction Mount, Female SMA Adapter & Remote Control, RTL2832U & R820T2 Tuner. Low-Cost Software Defined Radio.

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