This FAQ pertains to the Nano series, which includes models 2, 2+ and 3. If you have a question about the NESDR series in general, or about another model, click on the appropriate FAQ on the left!
The NESDR Nano series are our smallest SDRs, designed for portable and embedded applications. Our newest version, the NESDR Nano 3, measures at just 17mm x 8mm x 20mm and weighs only 15g!
What are the differences between the Nano 2, 2+ and 3?
The major differences are listed in the table below.
The Nano 2 and 2+ both have plastic enclosures, though the 2+ was redesigned to maintain lower temperatures than the previous generations. The Nano 3 comes with an aluminum enclosure as standard, and is a smaller device than the 2 & 2+, so they will fit side by side in close spaces.
The 2+ and 3 each contain a custom TCXO, which is the same as in the SMArt series. The accuracy (PPM) in these models is very low, <0.5PPM vs up to 50PPM for the Nano 2.
|Nano 2||Nano 2+||Nano 3|
|USB Interface IC||RTL2832U||RTL2832U||RTL2832U|
|Frequency Range (approx.)||25MHz - 1750MHz||25MHz - 1750MHz||25MHz - 1750MHz|
|Antenna Connector Type||Female MCX||Female MCX||Female MCX|
|Enclosure Material||Plastic||Plastic||Extruded Aluminum|
|Warranty Period||1 year||2 years||2 years|
How much of the spectrum can the Nano series receive at one time?
2.4 MHz nominal, 3.2 MHz max. However, you can use spectrum analyzer software to see arbitrarily large spans (not quite real time).
Why does the Nano 2 get so hot when in use?
The Nano 2 should get very warm during extended operation. The device is designed for elevated temperatures, so this will not affect the performance. However, it is important to always have the antenna plugged into the MCX port during extended operation.
Which side of the Nano 3 should I adhere the heatsink to?
The heatsink can be adhered to either side of the SDR. Both sides have silicon pads inside the enclosure, and with the aluminum casing, the temperature will equalize almost immediately.
Why can't I listen to AM radio stations on my Nano 2?
You cannot receive AM radio signals on this device as it is not capable of those frequencies. You need to use an upconverter to allow the device to receive these signals.
How do you interface with the Nano 3 Stratux bundle?
Most customers utilize Stratux, which is a software project that runs off of a Raspberry Pi. Unfortunately, Nooelec is unable to provide support for this software application, but there is plenty of information available online to get you started.
I bought the Stratux bundle, but I want to tune in to frequencies other than ADS-B. Do I need to buy another SDR?
No, there is no hardware difference in the SDRs in the Stratux bundle. You can use them to tune into any frequency between 25 MHZ and 1700 MHz. Just make sure that you are using the appropriate antenna for your desired frequency!
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