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Description
RFD 868x EU V2 Long Range Telemetry ModemRFD868x EU New Features: New Processor, ARM 32 bit core. Air data rate: 200kbit 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
RFD868x-EU New Features:
- New Processor, ARM 32 bit core.
- Air data rate: 200kbit/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 >20km depending on antennas and GCS.
- 2 x RP-SMA RF connectors, diversity switched.
- 500mW (+27dBM) See specifications.
- Transmit low pass filter.
- > 20dB Low noise amplifier, high IP3.
- RX SAW filter.
- All I/O ESD protected and filtered.
- Re implemented SiK and firmware, field upgrade-able, easy to configure.
- Small, light weight.
- Note: Not compatible with older modems
- The standard RFD868x will not communicate with the RFD868x-EU modem unless the standard RFD868x is configured to the same frequency as the EU modem.
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 capable).
Specifications:
- Frequency Range: 868-869 MHz
- Output Power: 500mW (+27dBm), controllable in 1dB steps ( +/- 1dB @=20dBm typical)
- Air Data transfer rates: 12, 56, 100, 200 kbit/sec (User settable, 200 kbit 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: 500mW (+27dBm)
- Receive Sensitivity: >111 dBm at 12 kbps, 105 at 64 kbps and 98 at 200 kbps
- 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.
Software / GCS Support:
The software solution is an open source development called "SiK". It has been re implemented to suit the new processor architecture available on the 32bit ARM processor core. A boot loader and interface is available for further development and field upgrade of the modem firmware via the serial port.
Most parameters are configurable via AT commands, Eg. baud rate (air/uart), frequency band, power levels.
Integrated support for configuring the RFD radios is supported by APM Planner.
The default settings are at 57600 baud, N, 8, 1, and 200k air data rate.
The RFD868/900x manual is here: RFD900x Manual
The RFD868/900x 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 realtime
- Automatic duty cycle throttling based on radio temperature to avoid overheating
Compliance:
RFdesign declare that the equipment is in conformity with the relevant Union harmonisation legislation:
Directive 2014/53/EU on radio equipment
The RFD868x-EU is compliant with the following standards:
- EN 301 489-3 V2.1.1
- EN 300 220-2 V3.1.1
- EN 62311:2008
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4.3 ★★★★★
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Product Reviews
★★★★★ 4
Worth your Money for Linda's Part
Format: Kindle
This book has two parts. Linda's description comes across as sincere and is told in story form as if you were sitting across the table from her having coffee. She is obviously a real person who experienced some extraordinary things. Her co-author may be a great guy but this is one of many books he sells and he doesn't have anything to say that adds to Linda's retelling. Great half a book!
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Reviewed in the United States on March 15, 2014
★★★★★ 5
Great book
Format: Paperback, Format: Paperback
I have only read one chapter however I can tell it’s going to be an amazing book!!
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Reviewed in the United States on August 8, 2025
★★★★★ 5
The message of the book is beautiful
Format: Hardcover
The book 'UFO...Contact from the Pleiades (45th Anniversary Edition): Volumes I & II' is characterized by an objective, scientific and factual recapitulation of the physical evidence of the Billy Meier contact case with the Plejaren. In addition to the physical evidence, numerous witness statements and a number of proven predictions are also cited. All these material findings, such as the beautiful photos and films of the beamships in Switzerland, the metal analyses, the audio recordings and the radiation from the landing sites, were examined scientifically by the four-person investigative team from Arizona (which is certainly just as beautiful as Switzerland) using the best scientists and technology of that time in the USA. The authenticity of the case has not been scientifically disproved. The cultural and historical connection of almost all peoples and indigenous peoples with the Plajades on the basis of traditions round off the Plajaren contact case in the book.
In addition to all these material, factual, neutral and objective analyses, the author, who lived with her husband Lee Elders on Billy Meier's terrain totaling more than one year over a period of more than seven years, gives the reader every now and then the chance to catch a glimpse of the immaterial factors of the case. And these remain in the memory. For short moments, the beauty of the case's message, occurring at the terrain, twinkles: Such as the immortality of higher values and virtues, the connection of all living beings, which through peace, freedom and love etc. bring themselves together to higher spheres.
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Reviewed in the United States on May 18, 2024
★★★★★ 5
This investigation stands the test of time
Format: Hardcover
I have been fascinated by the Billy Meier case ever since I first heard of this case 45 years ago. I have read several books on Billy’s contact experiences. And there have been quesions in my mind about the validity of the case. There are things I cannot explain but I chose to remain open to the possibility.
With that being said, I really appreciate the investigative background of Lee and Brit Elders.
The photographs, metal samples and recordings given to Lee and Brit Elders really stand the test of time and still quite amazing.
This book is intelligently written and I think is beautifully done. The quotes from Semjase are positive and affirming. The photos are astounding and I am happy to have this in my library. I love a book that encourages me to ponder the possibilities.
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Reviewed in the United States on May 2, 2024
★★★★★ 5
Ordinary People, Extraordinary Experiences
Format: Hardcover
A beautiful and interesting coffee table book. Whether you're a believer or not,the many photos of the Swiss countryside are lovely, and the photos and remarks from ordinary people like us are interesting and moving. Experiencer or not, a worthwhile purchase.
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Reviewed in the United States on August 7, 2025