NooElecNESDR Mini 2+ 0.5PPM TCXO RTL-SDR & ADS-B USB Receiver Set w/Antenna, Mount & Female SMA Adapter. RTL2832U & R820T2 Tuner. Low-Cost Software Defined Radio for Windows, Mac OS & Linux

I like it! I use SDR* (this unit in particular with the "HAM IT UP" converter) to spot signals/callers on whatever ham band I'm working at the time - a bit "wimpy" (sensitivity seems to drop off a bit on my module) at the AM radio frequencies and lower - If you want it for VHF and UHF listening it seems perfectly fine (police, fire, weather) I've had some compatibility issues with certain older USB ports - I also have had a bit of trouble getting it to work well with SDR # (again on some older machines and one newer machine) which surprised me a little - BUT since I basically use HDSDR and it worked very well with that, I didn't fight very hard to resolve the SDR # issues on some machines - it is definitely compatible with either SDR program and many others - it works VERY well on both programs on my Lenovo YOGA PRO 2 - it's an eye opening experience for such an inexpensive module to get an insight in to SDR, esp. if you've never beenexposed to SDR before*SDR means software defined radio(on edit 2/14/2016)This unit has totally converted me to SDR - I will be buying some kind of SDR FLEX transceiver system as a result of this unit, but I digress - HF. VHF, UHF, different modes, and then there's aircraft tracking as well - there just doesn't seem to be an end to the things I keep discovering it can do.If you're at all interested in radio modes, sw listening, and can't or don't want to invest a lot of money, this is definitely the way to "get your proverbial feet wet"You definitely want an upconverter though if interested in SW listening or HAM RADIO. (I'm using NooElec's V1.3 unit) This has also become a very important "band preview" device as well. It holds up well in strong transmitter fields. I expected I like it! I use SDR* (this unit in particular with the "HAM IT UP" converter) to spot signals/callers on whatever ham band I'm working at the time - a bit "wimpy" (sensitivity seems to drop off a bit on my module) at the AM radio frequencies and lower - If you want it for VHF and UHF listening it seems perfectly fine (police, fire, weather) I've had some compatibility issues with certain older USB ports - I also have had a bit of trouble getting it to work well with SDR # (again on some older machines and one newer machine) which surprised me a little - BUT since I basically use HDSDR and it worked very well with that, I didn't fight very hard to resolve the SDR # issues on some machines - it is definitely compatible with either SDR program and many others - it works VERY well on both programs on my Lenovo YOGA PRO 2 - it's an eye opening experience for such an inexpensive module to get an insight in to SDR, esp. if you've never beenexposed to SDR before*SDR means software defined radio(on edit 2/14/2016)This unit has totally converted me to SDR - I will be buying some kind of SDR FLEX transceiver system as a result of this unit, but I digress - HF. VHF, UHF, different modes, and then there's aircraft tracking as well - there just doesn't seem to be an end to the things I keep discovering it can do.If you're at all interested in radio modes, sw listening, and can't or don't want to invest a lot of money, this is definitely the way to "get your proverbial feet wet"You definitely want an upconverter though if interested in SW listening or HAM RADIO. This has also become a very important "band preview" device as well. It holds up well in strong transmitter fields. I expected damage at high transmitter power, but so far nothing. It just keeps on ticking! :)I had problems with a WIN 7 install originally. Something was wrong in that original OS. Same machine but upgraded to WIN 10 Pro, and both SDR# and HDSDR work perfectly now. I expected possible damage at high transmitter power, but so far nothing. It just keeps on ticking! :)I had problems with a WIN 7 install originally. Something was wrong in that original OS. Same machine but upgraded to WIN 10 Pro, and both SDR# and HDSDR work perfectly now.What, $20.00 or $25.00 plus the upconverter @approx: $45.00 and you have quite a bit you can do. I really like it for ham radio but recently using the aircraft tracking sw. has really been "enlightening!"

Without expensive laboratory equipment I have no elaborate details to mention, what I can say is that I had no trouble setting it up (I tried it out on four separate systems running Linux; two desktops, two Raspberry Pi... 4B/1G & 5B/8G, 'Bullseye,' 'Bookworm,' 'Bookworm,' & 'Ubuntu 'Noble,' respectively).It seems happiest running on Debian (12 'Bookworm'). The software available for it is mostly of the free and open-source variety, and the more graphically-intensive software is what will use up more RAM than the device, itself.Tuning-in local FM radio stations was no different from using the FM-tuner in our living room, the receiver sensitivity and selectivity were both en par with our (analog) FM-tuner. (Selectivity quite possibly is better with this device, mostly because of modern digital filter design in the IF-section/stages.)With regard to the amateur radio spectrum (or spectra), VHF works just fine; namely, there's plenty of activity on two meters... it's hit and miss finding activity on UHF, and one won't find much of anything below 24 MHz without mixing it down. (The antenna for the DX bands 160m - 10m is what will cost several dollars extra, this kit supplies an adequate antenna to get one started.)For a first try, this SDR-receiver is a good starter for anybody who's curious and wants to examine yet another angle to radio technology (and the price is right).

I've tried a few of the "cheaper" models out there, they are decent, but drift 30-45PPM error - when this came down in price, I was eager to get one. I've used it on Windows and Linux (both Debian x86 and RaspberryPi ARM) it seems to run well, though I had to manually update the drivers in Windows 10 to make it work (Windows Update reverted them back, I just had to say "pick manually" and click the right one again).NooElec's SDR not only bet but far exceeded my expectations! Mine came with a small telescoping antenna - while not the best, it at least works better than the tiny stub that others include to get started! On top of that, the stability is rock solid with the temperature compensation. I'm left wishing I had put the money toward a another of these instead of the other basic units.One thing worth noting, the error on my unit was 0.6-0.7 PPM error according to "Kalibrate-SDR", slightly above stated spec. More testing is needed to determine if this is "warm up" or fixed, but it seems worth mentioning. I'll take off 1 star (wish I could give it 4.5 star) for that being outside their stated specs, but that is still top-notch.