Rhizomatica Open Sources Shortwave Digital Radio for Off-Grid Data Exchange

By Margo Anderson · IEEE Spectrum · 2026-09-21

IEEE Spectrum reports that the Philadelphia nonprofit Rhizomatica has developed HERMES, an open-source hardware and software stack designed to transmit digital files over high-frequency bands. By utilizing the ionosphere as a natural reflector, the system enables remote communiti

IEEE Spectrum reports that the Philadelphia nonprofit Rhizomatica has developed HERMES, an open-source hardware and software stack designed to transmit digital files over high-frequency bands. By utilizing the ionosphere as a natural reflector, the system enables remote communiti