Original sentence: A mark bit is four complete cycles of a sine wave, translating to a mark frequency of 2083⅓ Hz, and a space bit is three complete sine wave cycles, making the space frequency 1562.5 Hz.The header is an AFSK data burst, with each individual bit lasting 1920 μs (1.92 ms) each, giving a bit rate of 520⅚ bits per second
Edited sentence: A mark bit is four complete cycles of a sine wave, translating to a mark frequency of 2083 Hz, and a space bit is three complete sine wave cycles, making the space frequency 1562.5 Hz.The header is an AFSK data burst, with each individual bit lasting 1920 μs (1.92 ms) each, giving a bit rate of 520 bits per second