3-valve electric set with a Westinghouse rectifier
Johns Catalogue - April 1930
Valves (3): Philips F209, UX201, UX226 and copper oxide Westinghouse rectifier
General Construction Notes for Wellmade Ltd:
Radios made for Johns in the 30's were often available in AC, DC or Battery. The inclusion of DC power options was because large tracts of Auckland (where Johns and Wellmade were situated) were supplied by DC power generation.