RFDesign RFD 900ux Telemetry Modem
by RFDesign

Introducing the RFDesign RFD900ux Telemetry Modem, a high-performance solution for long-range data communication. Designed for applications where size and weight are critical, this modem ensures reliable and efficient data transmission over extended distances.

Key Features:

• Extended Range Communication: Capable of achieving line-of-sight distances exceeding 40 km, depending on antenna configuration and ground control station setup.
• High Data Throughput: Supports air data rates up to 500 kbps, facilitating rapid and efficient data transfer.
• Enhanced Security: Incorporates AES hardware-accelerated encryption, ensuring secure data communication.
• Simultaneous RC Control and Telemetry: Enables RC PPM passthrough alongside telemetry data, streamlining control and monitoring processes.
• Robust and Compact Design: Features fully ESD-protected and filtered I/O ports, dual u.FL RF connectors with diversity switching, and a compact form factor measuring 25 mm x 33 mm x 10.4 mm, weighing just 10 grams.

Specifications:

• Frequency Range: 902–928 MHz (USA) / 915–928 MHz (Australia)
• Transmit Power: Adjustable up to 1 W (+30 dBm) in 1 dB steps
• Air Data Rates: Selectable rates of 12, 56, 64, 100, 125, 200, 224, 500, and 750 kbps
• UART Data Rates: Configurable from 1,200 bps to 1 Mbps
• Receiver Sensitivity: -111 dBm at 12 kbps; -105 dBm at 64 kbps; -98 dBm at 200 kbps
• Power Supply: +5 V nominal (3.5 V min, 5.5 V max), approximately 800 mA peak at maximum transmit power
• Operating Temperature Range: -40°C to +85°C

Interfaces:

• RF: 2x u.FL RF connectors with diversity switching
• Serial: Logic level TTL (+3.3 V)
• Power: +5 V input
• GPIO: General-purpose I/O (digital capable)

Software and Compatibility:

The RFD900ux utilizes open-source SiK firmware, re-implemented to suit the 32-bit ARM processor architecture. It supports point-to-point and multipoint networking configurations, with parameters configurable via AT commands. Integrated support is available through APM Planner, with default settings at 57600 baud, no parity, 8 data bits, 1 stop bit, and a 64 kbps air data rate. The modem is fully compatible with RFD900x modems but not with older 900+ series modems.

Compliance:

Designed to meet regional regulations, the RFD900ux is compliant with:

• FCC Part 15.247 (USA)
• AS/NZS 4268:2012 (Australia/New Zealand)

Please note that regional compliance may restrict certain performance parameters. Users are responsible for ensuring compliance with local regulations.