FSK modulation intended for QRSS'
This can be controlled via a micro-controller or via audio using a transistor audio switch arrangement.
Since qrss is very slow, a smart phone could provide the audio from a simple app or a recording set to repeat.
An el-cheapo $1 mp3 player could also provide this functionality.
Here the frequency shift has been set for far too much deviation. In reality we are looking for 3 - 10 Hz difference. both dits and dahs are higher frequency while, the spaces are lower frequency.
10 mW can reach intercontinental distances!
I invite constructive criticism
73
Enjoy
