Sal M. Onella wrote:
"I can recognize a test tape of CR CR LF but I can`t recognize any
of the alphabet, even at 60 WPM (45 Baud)"

Back when AT&T was the American Telephone and Telegraph Company, they
leased 30-Baud battery powered circuits suitable for manual telegraphy
or low-speed data. Biggest customers were the military and FAA.

Best regards, Richard Harrison, KB5WZI