Introduction
RFI-9256 Radio Modem User Manual
Page 5 of 109
1. Introduction
The RFI-9256 is a frequency-hopping spread spectrum (FHSS) radio modem operating in the international
900MHz ISM band. It has been type approved for operation in Australia (915-928MHz), New Zealand (920-
928MHz), and countries regulated by the FCC (902-928MHz).
The RFI-9256 is suitable for many applications including point-to-point, point-to-multipoint, and SCADA
protocol networks.
1.1 OEM Applications
An RFI-9256 OEM module is available for OEM applications.
When used in modular applications, the device where the module is fitted will be required to display on the
outside and in a clearly visible area the notice: “Contains FCC ID: P5M9256OEM”
Under FCC regulations, use of certain antennas may require a Class II permissive change from the FCC.
Please contact STI Engineering for more information.
1.2 Product Overview
CRC error detection and recovery via retries
Up to 30km point-to-point
Dual RS-232 serial ports
User selectable interface speeds between 110
and 115200bps
1 Watt (30dBm) RF output power
Programmable I/O for SCADA applications
Front panel indicators for RSSI, TX power, and
status
Can be installed and commissioned without test
equipment.
Sensitivity <-104dBm for BER 1 part in 10
-4
Operating voltage 8 to 30VDC
Operates at -10ºC to +60ºC with 95% non-
condensing humidity
Protocol routing modes.
