Dear Nostris OÜ Customers
 We hope that you are healthy and safe during this difficult time.
 Quarantine is not a reason to refuse development and further projects for the future. Therefore, our engineers have prepared the following solution for you, which will facilitate the development process of your devices.

 Controlling the RFM300W sub-gigahertz radio module (or CMT2300A chip) using the low-cost, low-power 8-bit Nuvoton microcontroller.
 As an example, the engineers of our company developed a COM port extension cable that allows you to transfer a data stream at speeds from 2400 to 51600 bps. The project was carried out on the budget radio module RFM300W-868 from HopeRF, based on the FSK transceiver CMT2300A, controlled by an 8-bit low-power microcontroller of the Nuvoton ML51 series.
 The software was developed and built in the Keil C51 environment in C language using a driver adapted for the 8-bit architecture.
 In a practical experiment under urban conditions at a speed of 2400 bps with a radiated power of 20 mW at a frequency of 868 MHz and the use of quarter-wave whip antennas, a communication range of more than 350 meters was achieved with a loss of less than 5% of the packets. In the near future, a similar code and all the developments
 will be available for the ARM M0 / ARM M4 microcontrollers Nuvoton.
 You can get the source code for the demo project, detailed advice and comprehensive technical support by contacting Nostris OÜ by email.