[GreenKeys] What is the RTTY standard for CR LF for transmission?

[Ralph Mowery]

----- Original Message ----- 
From: "Mike Willegal" <mike at willegal.net>
To: <greenkeys at mailman.qth.net>
Sent: Thursday, April 14, 2016 1:25 PM
Subject: [GreenKeys] What is the RTTY standard for CR LF for transmission?


> I’m working on improving a vintage computer (Apple II) app for RTTY.
>
> There are a number of possibilities and I wondering if there is a 
> convention for CR/LF usage.
>
> Is it expected that there is a CR/LF at the end of each message?
> Are there cases where CR/LF are sent before messages?
> Which goes out first, the CR or LF?
>
>
To stay compatable with the old machines it should be CR CR LF LTRS   with 
out the spaces that I put in to make it clear.

The two CRs are for radio circuits incase on is missed, then the LF comes 
and a LTRS or if the first character is a FIGS then that could be sent.  The 
reason is that the mechanical machines need about 2 non printing characters 
so the carriage can get back to the left.

The sequence should be sent to start with to make sure the machine starts 
off with a fresh line and at the end of the transmission so there will not 
be any over printing of the message due to static or other noise being 
received.