These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Amgueddfa Cymru – Museum Wales
Full title - New Beam System England and Canada, Oct 24 1926. Purple code on cream slip of paper : Final test slip for the inauguration of England - Canada New Beam System (High Speed Wireless). The Short Wave, Oct 24 1926.
