Скачать или смотреть Automatic Programmable CW Beacon 4kHz to 225 MHz with Arduino & Si5351

This is a prototype of Programmable Automatic CW Radio Beacon made with Arduino NANO and Si5351 chip.
The RF output power is less than 10 mW, but it can be increased with additional RF amplifier. In that case, the low-pass filter (LPF) should be added, in order to eliminate unwanted harmonics in the signal.
Beacon can be programmed to transmit in 4 kHz up to 225 MHz frequency range, with different speed of Morse keying and can be programmed with different transmitting message ...
It is very cheap! The material cost is only about 5 US dollars !
The Si5351 chip has three independent RF-outputs and they can transmit at the same time. Every one of these three RF-outputs can be programmed to transmit on different frequency in the range od 4kHz to 225 MHz.

Many thanks to Goran, Z35O and Blagoja, Z36BGJ for helping me about this prototype.
Based on LZ2WSG Sketch and NT7S Si5351 library.

Here on my web-page is an article about this Arduino Radio-beacon, where you can find the code too. (The article is in macedonian language, but you can use google translate): https://www.qsl.net/z33t/arduino_radi...

Direct link to the sketch (code) with additional libraries too:
https://drive.google.com/drive/folder...

73 de Z33T
www.qsl.net/z33t