This category provides information on some of the concepts and technologies associated with radio.

The sub-categories explain some of the technical aspects of radio to assist in understanding the impact they had on the development of NZ Post Office coast station sites.

However, we do not provide an in-depth study of each aspect and recommend that users wishing further insight consult other online sources such as Wikipedia and search on the sub-category term to gain that information.

The sub-categories are under development.