Experimental transmission by 2ZH from palings concert hall - May, 1923. Note Parabolic Reflector microphone. The method was used some years later by USA organizations for broadcasting and sound recording for motion pictures. It is considered the development of 1923 was the first use of parabolic for the purpose. July 1, 1923. (Photo by Australian Broadcasting Commission).

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Image Number:  5513-16225308Rights ManagedCredit Line:Australian Broadcasting Commission/Sydney Morning Herald/SuperStockCollection:Sydney Morning HeraldContributor:Australian Broadcasting Commission / Sydney Morning HeraldModel Release:NoProperty Release:NoResolution:1781×2421
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