[TenTec] CW A/B modes

[w8au at sssnet.com]

At 12:20 AM 05/12/2004, Alfred Lorona wrote:
>The differences between the two modes are really quite subtle. It was 
>first identified as a design parameter by famed keyer designed Chet Opal, 
>w9to, in 1975. He called it 'echo' for want of a better name at the time.

W9TO was Jim Ricks, originator of the "digital" keyer back in the mid 
fifties.  Don't think he added any subtle features in later years.

Perry   w8au