Output too fast?

Hy,

I'm using the code on an ESP32. With the following Code:
```
set_pin(26);
set_callsign("OE3FKG", "OE3FKG");
send_packet(_STATUS, 0);
```

I recorded the output directly in Audacity and the AFSK signal seems a bit short: http://sndup.net/5k9q2

Do I have to change `baud_adj`? If so, to what value?

Thanks!