RFD 868X Modem

RFD868x New Features:

• New Processor, ARM 32 bit core.
• Air data rate: 500kbit/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.
• Note: Currently due to the bandwidth limitations of the 868 modems Asynchronous Mesh and Multipoint Firmware are not officially supported for the 868X modems and correct operation of this code cannot be guaranteed

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 and Multipoint SiK firmware, field upgradeable, easy to configure.
• Small, light weight.
• 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:  868-869 MHz
• Output Power: 1W (+30dBm), controllable in 1dB steps ( +/- 1dB @=20dBm typical )
• Air Data transfer rates: 4, 8, 16, 19, 24, 32, 48, 64, 96, 128, 192 and 250, 500 kbit/sec ( User selectable, 64k default )
• UART data transfer rates: 9600, 19200, 38400, 57600, 115200, 400k, 921k baud  ( User selectable, 57600 default )
• Output Power: 1W (+30dBm)
• Receive Sensitivity: >121 dBm at low data rates, high data rates (TBA)
• Size: 30 mm (wide) x 57 mm (long) x 12.8 mm (thick) - Including RF Shield, Heatsink and connector extremeties
• Weight: 14.5g
• 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, tested operational from -73 to +123 deg C.