The 'CQ' brandname was introduced in 1933 and lasted until 1937.
CQ was manufactured by Radio Corporation of New Zealand Ltd, they were distributed by Hope Gibbons Ltd. Currently there are 6 documented models.
CQ was the house brand of Hope Gibbons Ltd, general merchants.
Advertising was minimal, and the brand never seemed to gain traction in the market. Cabinets were sometimes ornate, but many designs were shared with other minor brands such as Stella.
As with most Radio Corp NZ manufactured brands, CQ ceased production in 1937. They do not appear to have found another manufacturer and the brand disappeared at this point.