Technology Pioneers

JDA has been involved in all aspects of the evolution of broadcasting in New Zealand; from the first days of private radio, through implementation of the first AM stereo station outside of North America, through the introduction of FM into New Zealand, the design implementation and management of the first private televison network TV3, the creation of the channel plan that allowed the TV4 (C4) network, and the design, implementation, marketing and managing of the first major independent broadcast site, the Auckland Sky Tower.

JDA has repeatedly been called on to design and implement land mobile systems where the systems were "tricky" and warrant our special skills for innovative design.

For example, the Auckland Surf Life Savers
(as they were known then) had a need to connect all of their surf clubs from Whangarei Heads to Mairangi Bay on the East Coast and Muriwai to Raglan on the West Coast, back to Auckland - and between each other; a total of 17 repeater sites. This was difficult enough, but due to lack of spectrum, the system also had to be designed around only two VHF frequencies!

This "co-channel" network needed very careful design of antennas and transmitter powers to minimise interference between sites - and it was achieved!

The system went to air on time and within budget.