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began selling low cost "Harko" crystal receivers for $7 in 1921
which were met by the manufacturers employing horn theory sound engineers to create these lovely little gems
The Sangamo iHorn is industrial and practical
With its line of automatic telephone exchanges
” Like all cameras
Brown H2 horns began selling low cost "Harko"The H2 iHorns may well be one of the rarest iHorn ever made. This horn came from Great Britain and was manufactured by S. G. Brown, Ltd in 1922 1923. It is a model H2. It is an aluminum horn, with a metal base. In the Brown catalog, S. G. Brown said of this horn, "Designed to reproduce the human voice or music without trace of distortion" The metal base and neck are cast aluminum. Nearly all S. G. Brown horns state Brown somewhere on the horn or base.
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