--- title: RFD868ux --- [![rfdesign-logo-1](https://kb.rfdesign.com.au/hs-fs/hubfs/rfdesign-logo-1.png?width=280&height=50&name=rfdesign-logo-1.png "rfdesign-logo-1")](https://rfdesign.com.au) - Products Show submenu for Products - [RF Modems](https://kb.rfdesign.com.au/modems) Show submenu for RF Modems - [RFD900x Series](https://kb.rfdesign.com.au/900x-clone) - [RFD900ux Series](https://kb.rfdesign.com.au/rfd900ux) - [RFD868x Series](https://kb.rfdesign.com.au/rfd868x) - [Redundant Flight Control](https://kb.rfdesign.com.au/af-series-flight-controllers) Show submenu for Redundant Flight Control - [AF1](https://kb.rfdesign.com.au/af1-redundant-flight-system) - [AF3](https://kb.rfdesign.com.au/af3-redundant-flight-system) - Industrial Communications Show submenu for Industrial Communications - TxMOD - TxPole - [Dinio](https://kb.rfdesign.com.au/rfddinio) - UAVs Show submenu for UAVs - RFD-150-8H - Blog - Support Show submenu for Support - [Knowledge Base](https://kb.rfdesign.com.au) - Customer Portal - Contact Show submenu for Contact - [Sales](https://kb.rfdesign.com.au/contact-sales) - Technical Support - Products Show submenu for Products - [RF Modems](https://kb.rfdesign.com.au/modems) Show submenu for RF Modems - [RFD900x Series](https://kb.rfdesign.com.au/900x-clone) - [RFD900ux Series](https://kb.rfdesign.com.au/rfd900ux) - [RFD868x Series](https://kb.rfdesign.com.au/rfd868x) - [Redundant Flight Control](https://kb.rfdesign.com.au/af-series-flight-controllers) Show submenu for Redundant Flight Control - [AF1](https://kb.rfdesign.com.au/af1-redundant-flight-system) - [AF3](https://kb.rfdesign.com.au/af3-redundant-flight-system) - Industrial Communications Show submenu for Industrial Communications - TxMOD - TxPole - [Dinio](https://kb.rfdesign.com.au/rfddinio) - UAVs Show submenu for UAVs - RFD-150-8H - Blog - Support Show submenu for Support - [Knowledge Base](https://kb.rfdesign.com.au) - Customer Portal - Contact Show submenu for Contact - [Sales](https://kb.rfdesign.com.au/contact-sales) - Technical Support [Online Store](https://store.rfdesign.com.au) Search - There are no suggestions because the search field is empty. ## RFD868ux The RFDesign 868uX is a long range telemetry radio modem, covering the 865-870 MHz frequency band**.**  Designed for long range serial communications applications with stringent requirements on size and weight. Designed, tested and inspected in Australia; the EU variant is compliant with EU regulations.  ![RFD868x RF modem](https://kb.rfdesign.com.au/hs-fs/hubfs/868x/RFD868x%20RF%20modem.png?width=220&height=192&name=RFD868x%20RF%20modem.png) [![buynow](https://kb.rfdesign.com.au/hubfs/buynow.png "buynow")](https://store.rfdesign.com.au) ## Models:                    | Modem Model  | Maximum Transmit Power(dBm)  | Frequency Band/s (MHZ)  | Max No. of Channels  | Duty Cycle (%)  | | --- | --- | --- | --- | --- | | 868ux  | 30  | 865-870  | 8  | 100  | | 868ux-EU (Europe)  | 27/7  | 869.7-870  | 1  | 10/100  | | 868ux-IND (India)  | 30  | 865-867  | 7  | 100  | Please note:  The EU certified version of the 868 modems have limited operation modes, a low power (5mW) full duty cycle mode, and a high power (500mW) low duty cycle mode. The high power mode will significantly reduce data throughput due to the duty cycle restrictions. These conditions are a requirement of compliance with EU regulations and CANNOT be altered.    ## Key Features:   - A digital modem for long-range data transmission in applications with strict weight and size limitations. - Compatible with the MAVLink message protocol.   - Maximum Air data rate: 224kbit/s.  - AES Hardware accelerated encryption.   - Optional RC PPM or SBUS Passthrough.  - GPIO Pin Mirroring capability.  - ESD-protected and filtered IO pins  - Firmware options available to achieve several network topologies including point-to-point SiK and Asynchronous mesh.  - User updateable firmware and parameters - Smallest, lightest radio modem in class.  - License-free use in India and EU (IND and EU variant). - Compatible with x series modems. Note: - The ux and x series modems are not compatible with older "a" or “+” series modems .  ## Interfaces:   - RF : 2x u.FL RF connectors  - Serial: Logic level TTL (+3.3V)  - Power: +5v, ~1A max peak (at maximum transmit power)  - GPIO: General purpose IO.   ## Compliance:   - Regional version modems are compliant with regional regulation - NDAA compliant The RFD868ux-EU is compliant with the following standards: - EN300 220 V3.1.1 - EN301 489-3 V2.1.1 - IEC 62368-1:2014 Note: - Regionally locked version of the modems may restrict or limit the performance and available parameter settings compared to the unlocked modems. - Ultimately it is up to the user to identify the radio frequency regulation applicable to their areas of operation and ensure their modems parameters are set correctly. ## Specifications:     | Air Data transfer rates available:  | 12, 56, 64, 100, 125, 200, 188 and 224 kbit/sec (User settable depending on firmware and region variant, 64kbit default)\*  | | --- | --- | | UART data transfer rates:  | 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 1200000 baud (User settable, 57600 default)\*  | | Output Power:  | 1W (+30dBm)  | | Receive Sensitivity:  | >-97 dBm at 12kbps\* | | Size:  | 25 mm (wide) x 33 mm (long) x 10.4 mm (deep) - Including RF Shield, PCB and Heatsink.   SMT Version 21 mm (wide) x 29 mm (long) x 4.2mm (deep) | | Weight:  | 8g (3.5g SMT versions)  | | Power supply:  | +5 V nominal, (+3.5 V min, +5.5 V max), ~1A peak at maximum power    | | Temp. Range:   | -40 to +85 deg C    | \*values are correct as of version 3.57 SiK firmware ## Documentation:   [RFD900ux DataSheet V1.3.pdf](https://kb.rfdesign.com.au/hubfs/900ux/RFD900ux%20DataSheet%20v1.3.pdf) [RFD900ux Altium Library.zip --- INCLUDE????](https://kb.rfdesign.com.au/hubfs/900ux/RFD900ux%20DataSheet%20v1.3.pdf) [Modem Support FAQs V1.2.pdf](https://kb.rfdesign.com.au/hubfs/900ux/Modem%20Support%20FAQs%20V1.2.pdf)    [![rfdesign-logo](https://kb.rfdesign.com.au/hs-fs/hubfs/rfdesign-logo.png?width=280&height=50&name=rfdesign-logo.png "rfdesign-logo")](https://rfdesign.com.au) Innovative UAV components and solutions. +61 7 3255 6042 7/1 Stockwell Place Archerfield QLD 4108 --- [Follow us on Facebook](https://www.facebook.com) [Follow us on LinkedIn](https://www.linkedin.com) [Follow us on Twitter](https://www.twitter.com) [Follow us on Instagram](https://www.instagram.com) © 2026 All rights reserved.