Aid for the Deaf
H® Vactnophone is an apparatus to assist deaf people to hear music and speech clearly. In construction it is very much on the lines of the radio amplifier and uses a special "B" battery of 22-volt capacity. Being a proprietary apparatus imported to order, repairs and replacements are diffi-. cult. Mr. Bob Horrobin, of 2 Courtenay Place, Wellington, hag made. sucs cessful repairs with several Vactnophon left with him and. has also im-\ ported some of the specidl *B" bat¢ teries. He formed the opinion thay, the whole apparatus could be duplicat-* ed and made up of accessories readily procurable from pny radio dealer. The first New Zealand-made apparatus was submitted for test and proved very neat and effective, The price will be approximately one-fourth of the cost of the imported Vactnophone and should thoroughly interest all in New Zealand who suffer from deafness and ave not completely deaf.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310220.2.41
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Radio Record, Volume IV, Issue 32, 20 February 1931, Page 12
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153Aid for the Deaf Radio Record, Volume IV, Issue 32, 20 February 1931, Page 12
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