NP3CW the author of this book is on 18088.0 kHz right now

73 

David N1EA 

On Sat, May 13, 2023, 8:15 AM John <johnk5mo@gmail.com> wrote:
I just picked that up recently and have enjoyed the info on all of the obscure early electronic keyers.

73
John K5MO

On Sat, May 13, 2023 at 1:58 AM D.J.J. Ring, Jr. <n1ea@arrl.net> wrote:
I found this one and it is full of good info


73

John Paul Keon
______________________________________________________________
CW mailing list
Home: http://mailman.qth.net/mailman/listinfo/cw
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:CW@mailman.qth.net
CW List ARCHIVES: http://mailman.qth.net/pipermail/cw/
Unsubcribe send email to
cw-unsubscribe@mailman.qth.net
Subscribe send email to cw-subscribe@mailman.qth.net
Support this email list: http://www.qsl.net/donate.html

=30=
______________________________________________________________
CW mailing list
Home: http://mailman.qth.net/mailman/listinfo/cw
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:CW@mailman.qth.net
CW List ARCHIVES: http://mailman.qth.net/pipermail/cw/
Unsubcribe send email to
cw-unsubscribe@mailman.qth.net
Subscribe send email to cw-subscribe@mailman.qth.net
Support this email list: http://www.qsl.net/donate.html

=30=