The ZC1 Field Radio and ZA1 Amplifier RF were first issued to front line troops of NZ's 3rd Division in Guadalcanal in the Solomon Islands.
The troops barely had time to unpack and become familiar with their new radios before they had to repack them in preparation for the landings on Vella Lavella. ZC1 sets went ashore with the first waves of the attack. The ZC1 proved to be more effective in the dense wet tropical bush than other radio equipment in use. Used in the front line in conjunction with the American No. 48 pack set
, the ZC1's ease of use and relative effectiveness in the conditions was quickly appreciated by the troops.