FM/RF assistive listening system is radio broadcast technology that transmits the sound from a public address system/microphone to a person’s hearing aids or cochlear implants, or receiver with headphones.
FM: frequency modulation. RF: radio frequency
FM is a specific type of RF system
FM/RF systems have a range, 72 to 76 MHz and from 216 to 217 MHz. However, that varies around the world, 2.4 GHz is also used (100m+ range).
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