The Meniwave Short Wave Adaptor was manufactured for Johns Ltd by Wellmade Ltd in 1930.

Short wave adaptor.  Came with 4 sets of coils for 15-100m (3MHz to 20MHz)

Meniwave Short Wave Adaptor
1930 Johns Catalogue

Technical Information

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.