"David Harmon" wrote in message
...
Is there any particular plug/socket type connector that is an accepted
standard or most prevalent kind for connecting a CW key to a radio?

Most are 1/4 or more recently 1/8 for straight keys with 3 circuit for
keyers. It varies some. I find it easier to keep the cord with the radio
and use insulated alligator clips and move the favorite key around. This is
the tip for club stations and FD where people bring in their own key.