RFD900A 915MHz Long-Range Telemetry Radio Modem

RFD's 900-series modems have a strong reputation in the long-range UAV community for exactly one reason - they're engineered specifically to maximize usable range on a wireless data link, not adapted from a general-purpose radio module. For a mapping or survey mission that pushes well beyond the couple-kilometer range a typical telemetry kit covers comfortably, this is the class of hardware that keeps the data link alive rather than dropping out at the edge of a standard radio's reach.