Harry Stevens was the main driver behind the decision to enter the wireless market in 1923. He had been a keen amateur since before World War I and in 1922, following the launch of Britain's first radio stations and the formation of the BBC he persuaded the rest of the AJS board to enter the market.
The first radios made by "AJS Wireless and Scientific Instruments" at their Lower Walsall Street factory were launched in 1923. Harry wanted to concentrate on models aimed at the top end of the market and set about designing a high-quality range of 2, 3 and 4 valve receivers all well engineered in a choice of Mahogony or oak cabinets.
The price of a standard wireless ranged from £17. 10s.0d for a 2-valve set to £52. 10s for a 4-valve pedestal model.
In order to promote the business AJS exhibited at the 1924 Wireless Exhibition at the Royal Albert Hall. The products were well received, and a number of important agents were appointed. AJS were soon established as market leaders, although the AJS quality did not come cheap.
Following the abolition of various royalties, testing and registration rules, prices became more realistic and a dramatic increase in demand meant further manufacturing capacity was made available at the Stewart Street Factory.
In 1926, a change in the industry saw a move towards more simple designs and fully enclosed workings. AJS, having seen
Initially sales were good, but by the end of 1926 AJS were forced to adopt mass production techniques to remain competitive. A further setback occurred with the move towards "all main" sets in the home and AJS moved to design a "portable" radio that could be used in homes without electricity and carried outside.
Although AJS went to great lengths to remain competitive, the market was unstable and in 1928, the company decided to give up radio manufacture and sold the factory and remaining components to the "Symphony Gramophone and Radio Company".