RF DesignRF Design - RFD 900x-US V2 Modem (FCC Approved)

RFD 900X-US v2- single radio modem only. This is the US version that is FCC Certified. For end use in the US - see details below.

**Please note this is version 2 , please see comparison table for two versions below**:

1 x 900X-US Radio Modem only - for full setup see the radio modem bundles

RFD900x-US New Features:

• Radio parameters pre-configured and locked for FCC compliance with CFR15.247
• New Processor, ARM 32 bit core.
• Air data rate: 250kbit/s.
• AES Hardware accelerated encryption. *Fully working*
• RC PPM Passthrough with telemetry at the same time.
• Fully ESD protected + filtered - Every IO port is protected and filtered.
• Original SiK point to point firmware implemented.

Features:

• Long range >40km depending on antennas and GCS setup *80km demonstrated by Edge Research labs on a balloon, 57km in India, on Dipoles.
• 2 x RP-SMA RF connectors, diversity switched.
• 1 Watt (+30dBm) transmit power.
• Transmit low pass filter.
• > 20dB Low noise amplifier, high IP3.
• RX SAW filter.
• All I/O ESD protected and filtered.
• Re implemented SiK, field up-gradable with compatible SiK firmware, easy to configure.
• Small, light weight.
• License free use in Canada & USA
• Note: Not compatible with older modems

 Interfaces:

• RF : 2 x RP-SMA connectors
• Serial: Logic level TTL (+3.3v)
• Power: +5v, ~800mA max peak (at maximum transmit power)
• GPIO: 6 General purpose IO (Digital, ADC, PWM capable).

Specifications:

• Frequency Range:  902 - 928 MHz (USA)
• Output Power: 1W (+30dBm), controllable in 1dB steps ( +/- 1dB @=20dBm typical )
• Air Data transfer rates: 12, 56, 64, 100, 125, 200, 224, 500 and 750 kbit/sec (User settable, 64kbit default)*
• UART data transfer rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 1M baud (User settable, 57600 default)*

*note these values are correct as of version 3.07 SiK firmware

• Output Power: 1W (+30dBm)
• Receive Sensitivity: >-114 dBm at low data rates, high data rates >-98dBm
• Size: 30 mm (wide) x 57 mm (long) x 12.8 mm (thick) - Including RF Shield, Heatsink and connector extremities
• Weight: 18g
• Mounting: 3 x M2.5 screws, 3 x header pin solder points
• Power Supply: +5 V nominal, (+3.5 V min, +5.5 V max), ~800 mA peak at maximum power
• Temp. Range: -40 to +85 deg C

Software / GCS Support:

Most parameters are configurable via AT commands, Eg. baud rate (air/uart), power levels. Integrated support for configuring the RFD900 radios is supported by APM Planner. The default settings are at 57600 baud, N, 8, 1, and 64k air data rate. The RFD900x-US manual is here: RFD900x Manual The RFD900x-US SiK software manual is here : RFD900x Peer-to-peer Manual

Software features include:

• Frequency hopping spread spectrum (FHSS)
• Transparent serial link
• Point to Point
• Configuration by simple AT commands for local radio, RT commands for remote radio
• User configurable serial data rates and air datarates
• Error correction routines, Mavlink protocol framing (user selectable)
• Mavlink radio status reporting (Local RSSI, Remote RSSI, Local Noise, Remote Noise)
• Automatic antenna diversity switching on a packet basis in real time
• Automatic duty cycle throttling based on radio temperature to avoid overheating

Compliance:

The RFD900x-US is compliant with the following standards:

• FCC Part 15.247 (Frequency hopping and digitally modulated intentional radiators) FCC ID: 2ADLE-900X