UHF Radio Packet Modem
 
RPM3
The UHF Radio Packet Modem (RPM3) is a low cost intelligent radio packet modem that enables a two way radio network/link to be simply implemented between a number of digital devices. The RPM3 uses addressable data packets with error checking, packet acknowledgements and retransmissions to achieve a reliable transparent wireless data link. Built for ease of use and rapid installation, the serial interface ensures direct connection to microprocessors or to RS232 port via RS232 driver while remote configuration enables post installation setup of the modem.  
Figure 1: RPM3-914-17
Features
  • Addressable point-to-point mode
  • Point-to-Multipoint and broadcast modes
  • Inverted RS232 interface at 5V or 3V CMOS level
  • DTE speed 600-115200bps
  • Overall throughput: 17kbps with ACK and
                                           28kbps wothout ACK
  • Single 5V or 3V supply
  • 15mA during data streaming at maximum rate
  • Flow control - Hardware (CTS), none
  • Available in 869.85MHz (EU), 914.50MHz (North America)
  • Usable range up to 200m (650ft.)
  • No Duty Cycle Restriction
  • Built-in command line configuration
  • Built-in RF link diagnostics
  • Remote over-air unit configuration
  • Low operating current, Auto standby mode
  • Conforms to European ETSI EN 300 220-3 and EN 301 489-3
  • FCC approved (under part 15.249) - click here for Grant of Equipment Authorisation
  • Dimensions - 39 X 23 X 10 mm
Applications
  • Telemetry and telecontrol
  • EPOS equipment, barcode scanners, belt clip printers, stock control, job allocation
  • Remote data acquisition system, data loggers
  • In-building environmental monitoring and control system
  • High-end security and alarm signalling
  • Automated Monitoring and Control Systems
  • Fleet management, vehicle data acquisition