______________________________________________________________It wasn't just a ham thing - military message formats required CR CR LFMessages were often punched on tape and then transmitted at 100 wpm.Example message from a Navy Radioman training manual -(5 SPACES 2CR LF)
PP RUHPC (2CR LF)
DE RUHPB 85 01/0841Z (2CR LF)
ZNR (2CR LF)P 010837Z (2CR LF)
FM CINCPACFLT (2CR LF)
TO RUHPC/NWBJ/USS (2CR LF)
RENSHAW (2CR LF)
BT (2CR LF)
UNCLAS (2CR LF)
1. THIS PLAINDRESS (2CR LF)
SINGLE-ADDRESS MSG IS (2CR LF)
....On Wed, Jul 23, 2025 at 10:07 AM John Nagle via GreenKeys <greenkeys@mailman.qth.net> wrote:> From:"hwhall@aol.com" <hwhall@compuserve.com>
> Subject: Re: [GreenKeys] CR/LF trivia, in historical context
>
> radio amateurs made it a habit to send CR CR LF with the idea that 2 CRs
> gave sufficient time for even a slow machine to get back to the start
> of the line.
>
> Wayne
> WB4OGM
>
GreenKeys mailing list
Home: http://mailman.qth.net/mailman/listinfo/greenkeys
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:GreenKeys@mailman.qth.net
>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to wcwuttke@gmail.com