This version of the ZC1 is
believed to be an attempt to make the ZC1 more acceptable as the move to
common equipment standards gathered momentum. Today it is not clear if
these sets were manufactured like this or if they were standard production
sets which were modified as a batch after manufacture. Nor is it known
how many of this variant were produced.
British High Command saw the ZC1, despite
its superior qualities, as outside the range of equipment considered to be
standard issue for British and Commonwealth Forces. With a growing
trend towards rationalisation of equipment to facilitate joint training, the
supply of common spares and the interchange of equipment between different
units forming part of joint operation forces, the ZC1 was frowned on.
Senior Command believed the 19 Set was standard "Kit".
Internal wiring arrangement
These sets were produced to permit the use
of the standard 19 Set "Drop Lead" arrangement for Microphone and Headset.
It was hoped that this would make the modified sets more acceptable by
facilitating their installation into vehicles already fitted out for the 19
Set before allocation to NZ units serving in joint Forces.
Possibly these sets were produced as a "proof of concept" trial in advance
of the production of the so called "J Force Sets."