ASCII

Used by radio amateurs since 1980.

Description :
Baud rate : 110. A character is composed of a “ start ” bit (1 “ space ”), 7 or 8 bits and a “ stop ” bit (2 “ mark ”)
Speed : 110 wpm (7 bits) or 100 wpm (8 bits)
Modulation : FSK two tones (“ mark ” and “ space ” , "mark" high) with a shift of 170 Hz (or, sometimes, 200 Hz),
Receive mode : USB
Character set : 7-bits ASCII (or 8-bit ASCII for some languages), no parity,
Shape of pulse : rectangular
Bandwidth : 700 Hz (due to rectangular shape),
Demodulation : non coherent,
Synchronization: asynchronous with start bit,
Correction code: no
Convolution code: no
Interleaving : no
Pmean/Ppeak : 1
Lowest S/N : -2 dB