Infra-red and RF systems

Infra-red systems enable you to get round the problem and potential hazard from trailing wires.  The system comprises two parts, a transmitter and a receiver.  The transmitter part is connected to the signal source (such as a television) and the receiver part , which you need to keep near you, is connected to your hearing aid or to a set of headphones.  The signal is sent between the parts in the form of invisible infra-red light.  Sound quality can be better from infra-red systems than from induction loops, for example , but direct sunlight can cause interference and you need to maintain 'line of sight' between the transmitter and the receiver fr good communication.

You may also come across systems that use radio frequency (RF) communication between the parts insead of infra-red, and these have the advntage of not being dependent on line of sight orientation.

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