5 PCBs for control the vertical array. 

You need just one but sending from The Netherlands is more expensive if you are out side Europe!

You can use 1 as drill mall

World wide shipping from China via Fedex is included. (+/- 7 days round trip)

More info via https://www.pi4cc.nl/tech-info/rx-array/

Parts can be orderd at Mouser. We don't sell complete kits!