Page 29 Advertisement 2

Radio Record, Volume IV, Issue 28, 23 January 1931, Page 29

De FoREST VALVES 06 Made by the man who invented Broadcasting J} The right selection of radio valves makes an amazing difference in the pleasure you get from radio. De Forest Audions have set the world standard for 24 years: They are made in the labora- tories of Dr. Lee De Forest; inventor of the first radio valve. Write for descriptive Leaflets. INTERNA TIONAL RADIO CO. Ltd_ 22 BLAIR STREET, WELLINGTON Factory Agents.