[Oleg Kutkov] decided to build a wideband SDR – for satellite communication ... To solve that, he’s used eight separate PCI-E to USB 3.0 cards, each of them with one HackRF plugged in, all ...

Instead of a USB 3.0 port, the XRTX connects to a computer through the PCI bus ... a single card means phased array antennas, 8×8 MIMO, and other techniques that make this massive SDR very ...