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Description
RF Design RFD 868x-EU Long Range Telemetry Modem BundleThis is the ideal solution for long range telemetry or communications. 2 x RFD868x EU modems with antennas for all antenna ports. The kit consists of: 2 x RFD868x EU Radio Modems 1 x Antenna, 868 900MHz Quarter wave monopole 2. 1dBi 1 x Antenna, 868 900MHz Right Angle Quarter wave monopole 2. 1dBi 4 x Antennas, 868 900MHz Half wave dipole 3dBi 1 x FTDI USB cable You get a cheaper price when purchasing a whole kit ! RFD868x New Features New Processor,
This is the ideal solution for long range telemetry or communications. 2 x RFD868x-EU modems with antennas for all antenna ports.
The kit consists of:
- 2 x RFD868x-EU Radio Modems
- 1 x Antenna, 868-900MHz Quarter wave monopole 2.1dBi
- 1 x Antenna, 868-900MHz Right Angle Quarter wave monopole 2.1dBi
- 4 x Antennas, 868-900MHz Half wave dipole 3dBi
- 1 x FTDI USB cable
You get a cheaper price when purchasing a whole kit !
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, multipoint firmware implemented.
- Asynchronous multipoint firmware, *Beta release*
Key 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.
- Compatible with 3DR / Hope-RF radio modules.
- License free use in Australia, Canada, USA, NZ, Europe
Kit Contents
The kit consists of:
- 2 x RFD868x-EU Radio Modems
- 1 x Antenna, 868-900MHz Quarter wave monopole 2.1dBi
- 1 x Antenna, 868-900MHz Right Angle Quarter wave monopole 2.1dBi
- 4 x Antennas, 868-900MHz Half wave dipole 3dBi
- 1 x FTDI USB cable
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.
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 RFD900 radios is supported by APM Planner.
The default settings are at 57600 baud, N, 8, 1, and 64k 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, or Multipoint networking
- 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
The RFD868 is designed to be compliant with the following standards:
- FCC Part 15.247 (Frequency hopping and digitally modulated intentional radiators)
- AS/NZS 4268:2012 (Radio equipment and systems - short range devices)
The modem is designed for system integrators who will integrate the modem into their own projects and product prototypes. The user is responsible for compliance with local regulations for radio transmitters.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
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Product Reviews
★★★★★ 5
Get this if you draw, write, play touch games
Model: iPad Pro 11,iPad Air 5th/4th
The quality of the screen protector is great, easy to put on without the video. i love how it really feels like writing on paper with my pen especially drawing. I will definitely be buying more for myself,mother and siblings. It’s a good fit for my iPad Air 4th gen and a bang for the buck
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 4
Good but Installation was a Bit Iffy
Model: iPad A16 11th/10th/Air 11
90% of the time I use my iPad for school. Originally, I used just a regular screen protector, but it would get dirty with smudges and imprints from my Apple Pencil, and there would be a lot of glare since I'm in a classroom most of the time, which would make it awkward to see what I was writing at times. Plus, the screen protector was too smooth so it would actually be difficult to write legibly.
This product makes it a lot easier to write smoother on the iPad. I only just installed it, so I can't say much on the smear protection yet, but I can already see the reduction in glare as well. For $8, getting a pack of two of these with an install kit is a very nice deal imo.
My only issue was the installation process, which could've been as much my own fault tbh, but I felt like I aligned the screen protector pretty well with the sticker, however the first time I tried installing it it was way off the center (maybe my case got in the way?). The biggest issue was using the squeegee to pop air bubbles, and this is something they don't mention in neither their instruction guide nor video, but you're supposed to used the velvet red side, not the naked white side: using the white side actually takes the grit off the protector, which is obviously something you don't want on a product that relies on it. Thankfully I have another one in reserve in case this one wears off sooner than expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
★★★★★ 5
Perfect Paperlike substitute
Model: iPad Air/Pro 13
I’ve been using this screen for roughly two months now and I can say it was so worth it, it is rough on plastic nibs! I am going to order some heavier duty ones and see how it fairs! It works just fine ON TOP of a screen protector isn’t that great!
I wanted something like paper like but didn’t want to pay that expensive price for something I wasn’t sure I was going to like. This one does the trick and gives me just enough resistance to feel more in control of my pen!
It fits well just make sure to know the size if your screen I had to modify where the camera indent was but it cut just fine and looks great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Game changer for Note Taking
Model: iPad A16 11th/10th/Air 11
Great quality, great price, easy to apply. Has completely changed the way I use my iPad and how it feels to write on it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Feels like paper and makes writing fun!
Model: iPad A16 11th/10th/Air 11
I was hesitant to start using my iPad for class because I HATED how my Apple Pencil sounded hitting the screen while I was writing.
This product has completely changed my mind and now I use it almost daily! I love the feel of this screen and it has lasted all semester long. It was a little tricky getting the screen on just right, and I had to use both because the first time I had a bunch of air bubbles, but the second time was perfect! I think you would probably want to get a new screen every year to ensure it still has that paper-like feel, but I think that’s totally reasonable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
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