Kiwi wireless site
 

http://www.zc1-radioclub.wellington.net.nz/index.html

Some of the text under BACKGROUND, relating to 19 set production in Australia, is somewhat misleading.

In case anyone wants to know, these unique NZ built radios ( mk 1 version) were installed in the rare C8AX 'house' type wireless vehicles - a elaborate wooden van structure, made from NZ trees ! The ZC1 manual has a pic of the radio in the van . Some of these vans were shipped to the Solomons during WW2.
Mike