Stratux ADS-B Receiver

Stratux
Name Qty Source Price Shipping Ext
Stratux Case with Fan, Clear Acrylic 1 Amazon $18.99 $4.67 $23.66
Stratux Vk-172 USB GPS Dongle 1 Amazon $16.99 $16.99
Raspberry Pi 3 Model B Motherboard 1 Amazon $36.00 $36.00
Kingston 8 GB microSDHC Class 4 Flash Memory Card SDC4/8GBET 1 Amazon $3.99 $3.99
NooElec NESDR Nano 2 - Tiny Black RTL-SDR USB Set (RTL2832U + R820T2) 2 Amazon $20.95 $41.90
DHT Electronics RF coaxial coax cable assembly SMA female to MCX male right angle 2 Amazon $5.50 $11.00
712-ANT-916-CWHWRSMA, MFG Part No:ANT-916-CW-HWR-SMA 2 Mouser Electronics $10.39 $4.99 $25.77
Addicore Raspberry Pi Heatsink Set for B B+ 2 and 3 (Set of 3 Aluminum Heat Sinks) 1 Amazon $4.95 $4.95
Total $164.26

Other antennas available from stratux guys http://stratux.danmurray.net/shop/

I actually used a Raspberry Pi 2 plus Edimax Wifi (before 3 was released).

If you only want 978mhz, then only need 1 NooElec NESDR Nano 2.

Some users suggest getting either a USB extender cable to put the GPS module up on the glare shield (keeping the rest of the unit out of the Sun), or getting a VK-162 instead of the VK-172.

An 8GB SD card is the minimum for a working system. You may wish to get a 16GB card to have a little room to grow.

Stratux online info:

Software:

stratux
https://github.com/cyoung/stratux/releases/download/v1.0r1/stratux-v1.0r1-945c8bf6bc.img.zip
Windows disk imager
https://sourceforge.net/projects/win32diskimager/

Finally, here's an even cheaper Android-based solution: http://hiz.ch/index.php/home/adsb-receiver. It's not Stratux, but at about $20, it's hard to beat.