Airzone kicked off in 1925 making crystal sets. l

Like many manufacturers they boomed with the introduction of tariffs in 1930.

Moving to new Premises on the Parramatta Road at Camperdown in Sydney they soon grew to a workforce of 750 and become one of the leading manufacturers.

Refusing to make badged sets until 1937 when they made sets for Mullard and Malvern Star Peal.

Their most collectable sets are the dramatic "Symphony Leader" and the "Radio Star" (above)