Years ago my friend from Wales wrote a paper about the wonderful Marconi keys. You can read it here, from Morse Magnificent. https://www.dropbox.com/s/5ez87b7xd334g5r/Marconi_Keys_by_D_Wyn_Davies.pdf?dl=0 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/cw/attachments/20190815/73fcbbb2/attachment.html>