500kcs.org
HomeThis site is temporarily designed to present information about the early days of wireless communication with merchant and passenger ships. With reference to the issue of danger and safety signals, ships newspapers and weather bulletins. With special reference to the declaration of WW I from station ZZ located at Poldhu, Cornwall. 500kcs was the calling and distress frequency using CW (Morse code) for nearly 100 years. Representing former Radio Officers. See links for further details.
http://www.500kcs.org/