[GreenKeys] 1 or 1.5 stop bits?

[W2HX]

Sorry for rudimentary question. If I am configuring a serial port for use with 45.45 baud ITA-2 mechanical teletype operation, should I use 1 stop bit or 1.5? I can't recall the proper set up. And when RTTY users on the HF bands what do they use?

73 Eugene W2HX
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