NooElec NESDR Nano 2+ Tiny Black RTL-SDR USB Set (RTL2832U + R820T2) with Ultra-Low Phase Noise 0.5PPM TCXO & MCX Antenna. Software Defined Radio, DVB-T and ADS-B Compatible, ESD Safe

I bought this based upon some of the other reviews. I needed something small that did not stick out as it was going to be plugged into a Raspberry Pi in a confined space.Reason for buying was to detect a Byron B30141A doorbell being pressed.I wanted the doorbell receiver in the front room for whoever was sitting in there so they could hear it.I also wanted to know when I was at work upstairs when the doorbell had been pressed.As this was just transmitting on 433Mz and a bit, then this rtl-sdr dongle should do the trick.I installed it on a Raspberry Pi running PiOS 64bit.Installed the rtl-sdr, gqrx using apt, downloaded from GitHub merbanan/rtl_433 and compiled.First had to locate (home in on) the frequency, so used the gqrx.Turned that into 433mhz and then watched when I pressed the bell a few times.Blow and behold the signal was just slightly off to the right.Armed with the actual frequency I could tell rtl_433 that and then use it to unpick the PWM signal.I needed up with around 20 versions.Also the bell is known to transmit around 20 difference codes changing at will.So press the bell a few times to see what comes out.Now I have the pwm setup, I use rtl_433 to send an MQTT message onto Node-Red.There I can interrogate the message to see if it really was my doorbell and if so send it on to a Home Assistant notification and to another MQTT topic, which then pings most of my apple devices and my Pc running linux which is hooked into the MQTT topic and Home Assistant.Success it works.

I needed an SDR to find out why my RF transceiver (Flipper Zero in this case) is unable to replay a signal, so I got this SDR over other RTL-SDR type devices, since it has a TCXO. It turns out that the SDR's reference frequency is dead-on (the USB emissions at 240 MHz is an easy way to check that), and Flipper Zero was off by ~54 kHz. I'm very happy with this device as it saved me a lot of time and headache I'd have otherwise.

I have this connected to a raspberry pi to take readings from my Brasser weather station. The device is very stable and works really well! I had to do some research to get it working the way I wanted but the company are very quick to reply and helpful. A great device to get you started on learning about software defined radio (SDR).To get it working on the raspberry pi there are several good online tutorials, but basically you need to:- install "rtl-sdr"- install dongle drivers and blacklist the TV tuner drivers- install "rtl-433"- Run the command "rtl_433 -f 868.3M -s 1M" - this should read data from a Brasser weather station!I found the commands at the address: sensorsiot(dot)org/install-rtl_433-for-a-sdr-rtl-dongle-on-a-raspberry-pi

I liked the size - I hoped to put it into a samsung portable computer but it was still too big.It works well with SDR# but even with the plastic case lined with copper guitar tape there are so manywideband sprogs (false signals) its not for everyday use.If you need an ultra tiny SDR its "ok" but don't expect it to compare with an RTL-SDR V2 / V3 or an Airspy 2

I bought this for use with a Raspberry PI to interface to a wireless Weather Station and it is a great little piece of kit.Small and feature packed. The online instructions for installation on Linux were excellent and easy to follow.Works well, dongle itself looks good in use and the telescopic aerial stands up well by itself but is also easily secured.

Wow wow wow! I cannot believe how well this product works. It came with an aerial which I use with RadarBox. This little antenna and receiver pulls in 82 nm in each direction - which I find insane! Definitely worth the money!

this is not a DAB USB aerial plugin. this is not clear in the description. this is something to do with radio frequency analysis. after trying to follow the instructions my pc no longer has camera as the drivers no longer work because of this device. The support is limited as well. So I had the best time swearing at my computer trying to figure out what I had just bought.

I was quite excited when I saw Nooelec had released this new Nano with the high stability oscillator, however the device suffers terribly from spurious signals even with the antenna disconnected. In comparison to the larger Nooelec 2+ device this device is awful, its not fit for purpose as an SDR. Screen shots attached at a couple of different frequencies, the signals are ALL spurii with the antenna disconnected!