Nooelec Dual-Band NESDR Nano 3 Premium ADS-B (978MHz UAT & 1090MHz 1090ES) Bundle for Stratux(tm), Avare, Foreflight, FlightAware & Other Applications. Includes 2 SDRs, 4 Antennas, 5 Adapters.

This dual-band SDR bundle contains everything you need for a full DIY ADS-B installation.
2 NESDR Nano 3 SDRs are included. These SDRs contain an R820T2 tuner along with an RTL2832U USB interface/demodulator. They also contain an ultra-low phase noise 0.5PPM TCXO. They have a frequency capability of approximately 25MHz-1700MHz. The NESDR Nano 3 are very small in size, which makes them perfect for portable and embedded applications.
The NESDR Nano 3 SDRs are installed in aluminum enclosures to greatly reduce EMI, improve performance, and facilitate heat transfer from the PCB to the exterior of the device.
The NESDR Nano 3 SDR was designed to eliminate issues with USB port occlusion. You can install the devices side-by-side and back-to-back in nearly any portable/embedded device, without the use of USB extension cables, removal of the SDR PCB from the enclosure, or other such hacks.
There are 2 sets of antennas included. 1 small-sized, medium-gain meant for ultra-portable and cockpit applications, and 1 medium-sized, high-gain meant for portable and ground applications.
Appropriate adapters and RF cables are included to facilitate various installation options.
A split-Y cable is also included for those who wish to use a single antenna to feed both SDRs. Note that splitting a signal in this matter involves some signal loss--please take this into account when setting up your system.
There is a full 2-year parts & labor warranty on all bundle components.
Each SDR is lab-calibrated and serialized for easy Stratux software installation. Each comes with a calibration certificate with the calibration value & serial number, along with a pair of adhesive labels which you can apply to the location of your choosing for easy identification.