The Lyceum Theatre (now the Astor) on the corner of Beaufort and Walcott Streets was opened on Wednesday 5 November 1919 and could hold 1,060 people, 300 in the Dress Circle and 760 below. The venue was multi-purpose back then and on Tuesday and Thursday nights it was hired for dancing. But on Thursday 6th December 1923, a live broadcast of an evening of entertainment was made by the Mt Lawley Radio Club with the transmitter being controlled by Mr Walter E Coxon. The event was the first of its kind in Australia and was advertised and then reported in the local press as shown below.  

WIRELESS. WIRELESS.
Sunday Times Sunday 2 December, 1923
An Event unique in the History of Australasia. LYCEUM THEATRE, MT. LAWLEY, THURSDAY. DEC, 6, 1923. A FULL EVENING'S PROGRAMME WILL BE BROADCASTED BY Miss G. Edwards, Messrs. Peter Roxby, Jade Stephens, Bert Gibson, "Dryblower" (E. G. Murphy). H. C. Goff and his Choir of 50 Voices, McMahon's Concert Band, and the Perth Banjo Team.
Proceeds to Provide Wireless for Mt. Lawley Radio Club. PRICES-2/ and 1/6. Reserved, 6d. extra.  

WIRELESS CONCERT.
The West Australian Friday 7 December, 1923
Last night, from the Lyceum Theatre, the Mt. Lawley Radio Club broadcasted a concert contributed to by several of Perth's leading vocalists and musicians. The entertainment was transmitted by Mr. W. E Coxon over a radius of between 400 and 500 miles; and the Radio Club claimed that this was the first full programme to be broadcasted in Australia. Whether this be true or not, the concert afforded proof of the earnestness with which the club has taken up wireless, while the size and enthusiasm of the audience bore witness to a widespread interest in the subject. The entertainment was in itself an excellent one, considered apart from the added novelty given by the recording apparatus, which stood at one side of the stage. Professor Ross prefaced the concert with a few words congratulating the organisers on their efforts. Mr. Hugh McMahon's orchestra led off the concert with selections from 'Geisha'; other artistes including Messr. E G Murphy ('Dry-blower”), Jack Sevens. B Gibson, and Peter Roxby, Miss Gwindys Edwards, and Mr H C Goff's choir.

Sunday Times
Sunday 16 December, 1923
At the radio concert at the Lyceum Theatre not only the numbers submitted but the cheers and hoorays of the audience were all heard by listeners in hundreds of miles away. The new science Hoo-radio!  

Broadcasting demonstrations started with Walter “Wally” Coxon in 1918 at the Perth Royal Show. He broadcast speech and music from one side of the showground to the other with a demonstration transmitter on display in one pavilion and a demonstration receiver in another on the far side of the showground. Walter Coxon also claimed to have originated the first-ever music broadcasts in Western Australia, in about 1920. Emanating from his own amateur 'rig' in the family home at 46 Sixth Avenue, Maylands, they featured records borrowed from a Perth record company.  

Coxon was granted WA’s first broadcast licence and began transmitting from Highgate in 1921 (call sign 6AG). Known as the “Father of Radio in Western Australia”, he became the Manager and first Chief Engineer of 6WF and successfully broadcast from WA to England, South Africa, Java, Holland, England, and America. Walter later designed and equipped commercial stations 6ML, 6BY, and 6AM, and pioneered the technical work for the Royal Flying Doctor Radio Service throughout Western Australia.