Mass programmable FM stereo sound equalized assistive listening apparatus
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United States of America Patent
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Mar 31, 1998
Grant Date -
N/A
app pub date -
Feb 3, 1997
filing date -
Oct 1, 1993
priority date (Note) -
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Abstract
A mass programmable FM assistive listening system preferably consists of an FM transmitter adapted to send audio signals on a selected one of a plurality of predetermined available channels. The system includes a plurality of portable receivers which may be mass programmed to receive a selected one of said predetermined channels from a membrane style keypad. The audio signal is preferably stereo, sound equalized and within the frequency range of from about 72 to about 76 megahertz.
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