You should use 1.5 stop bits if possible.

Some machines have used only one stop bit and you get a slightly higher number of characters per minute.     I would have to look but not going to but I think that is where the 66 wpm comes from instead of 60 wpm.

You may be able to get away with 1 stop bit, but 1.5 is needed and if more than 1.5 such as 2 stop bits all you lose is a few wpm through put. 

Ralph ku4pt

From: [email protected] [mailto:[email protected]] On Behalf Of W2HX
Sent: Sunday, January 02, 2022 6:07 PM
To: [email protected]
Subject: [GreenKeys] 1 or 1.5 stop bits?

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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