An open-source 240-antenna array to bounce signals off the Moon

A community project built a 240-antenna, 1.5 kW Earth–Moon–Earth (EME) array offered for $2,499.

The design uses custom MASH sigma-delta ADCs feeding a Lattice ECP5 FPGA and connects to a Raspberry Pi over MIPI.

The project provides standalone 4-antenna tiles and demonstrations on its website, including spatial RF visualization and drone video interception.