FM Systems come in all shape and sizes with varying features. Primary differences when comparing FM
Systems will be channel frequencies, listening range, number of channels available, and method used to
recharge. All FM Systems will have one unit that transmits sound and another unit(s) that receive sound.
One Transmitter may send to multiple Receivers. Often, the Receiver has a built in microphone which
means it may double as a personal listening device .
The diagram below demonstrates how the Receiver would receive sound from the transmitter/person
speaking and may also receive sound from its own built in microphone.
The difference between a Loop System and an FM System is that an FM System offers additional privacy
and a Receiver is required to receive sound. Unlike a Loop System, where a T-Coil equipped hearing aid
acts as the receiver, therefore, requiring no hardware. If privacy is not a concern and you are more
interested in severing a large demographic, you may want to consider a Loop System .
