For nearly 100 years 500 kHz has been the maritime calling and distress frequency. It has saved over 10,000 lives, nearly everyone has heard about the Titanic, but in its first decade there are documented instances where over 5000 lives were saved using this frequency.

Much of the credit for the invention of wireless goes to Guglielmo Marconi.

Radio Officers’ Groups World Wide are joining togheter in calling for 500kHz to be made an International Heritage site.

If you are Radio Officer and since now you had not part at the petition you can join the initiative writing to one of the e-mail adresses you find in the Radio Officers section of this website or to the webmaster.

It is not sufficient to enthusiastically discuss this topic amongst yourselves. In order to really gain something you have to make representation to your responsible institution. We urge you to do so very soon!