KERSTEN EXPONENTIAL PUBLIC ADDRESS SPEAEERS Type '2505A--for Theatre; Dance Hall or Rink: Size : Height, 403in. ; Width, 30in. ; Depth, 304in. ; Air Column, . 1OFt. {11/10/- Type No; IB Trumpet, Bell diameter; 30in. ; Length, 66in: For u8e out-of-doors or in large halls-__wherever transmission to a great distance i8 nece8gary '5 Kerstern Special Power Electro-dynamic Unit, for u8e with above horns, 6-volt type, with transformer 820 SPECIAL BROADCASTING Send for Illustrated MICROPHONE Double Button, Lists. low "kisg level, high gensitivity Wag 836/15/- {24 L: B. SCOTT_ Ltd. Our Price BOX 395, CHRISTCHURCH
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310306.2.55.1
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Radio Record, Volume IV, Issue 34, 6 March 1931, Page 19
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88Page 19 Advertisement 1 Radio Record, Volume IV, Issue 34, 6 March 1931, Page 19
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