FSK Receivers (EFR Series)

The EFR FSK Receiver series receives frequency-shift-keyed command and data uplinks/downlinks corresponding to Emhiser’s EFT FSK Transmitter line. Representative catalog units include the EFR-11D1D family in the 11 cubic-inch package, DC-coupled, single frequency in the 1435.0-1539.5 MHz range, offered with TTL (-00), RS-422 (-01), or RS-232 (-02) digital outputs, and RSS-augmented variants (-20, -21) that add received-signal-strength telemetry alongside the recovered data. FSK Receivers are intended for ground telemetry and command-station equipment racks supporting range and flight-test operations, providing the receive-side complement to Emhiser’s airborne FSK transmitters, and are documented in Emhiser’s dedicated FSK Receivers catalog PDF.