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A radio frequency unit can sit anywhere, fitting discreetly underneath clothing.
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A radio frequency hearing loop technology system provides the same security as the infrared option, with much more flexibility, the same level of security and a more streamlined setup process.
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Highly portable – ideal for tour groups.
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Easy to install/low installation cost.
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Can cover large seating areas.
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Several channels available for multiple systems installed in adjacent rooms as well as for language translation and audio description for the blind.
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Suitable for indoors and outdoors.
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Require Receivers for everyone.
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Both headphones and neck-loops must be available at public facilities as coupling options.
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No privacy as signal travels through solid surfaces. However, Encrypted digitally-modulated (DM) systems are available for use where privacy is a priority. In addition, some of the digitally modulated systems provide two-way communication for question/answer sessions and interpreting needs.
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Facility owners need to maintain, clean, dispense and collect receivers and keep receiver batteries charged.
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Radio interference from other services is possible.
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For listeners who wish to use an FM receiver equipped with a neck-loop along with his or her hearing aid/cochlear implant T-Coil, the T-Coil may pick up electromagnetic interference if it is present in the room. Care should be taken to reduce/eliminate spurious electromagnetic interference in the room prior to the installation of an FM system.