I want to generate an FSK signal with a radio. My first idea is to generate an audio in which the high level is a 1 and the low level is a 0:
This audio is then modulated by the radio with FM. In theory I think it should work, as FSK is just modulating the binary packet, but I see that programs like MixW generate an audio completely different from what I generated:
What is the proper way to generate an audio which will input a radio to obtain an FSK modulation?