The Ebata family uses an FM transmitter + radio system to bring the TV sound to their hands.

Two of the above "bumper radios" are now in operation in the Ebata household.

However, the following, fixed station FM transmitters (except for in-vehicle use) do not appear to be available for sale.

Well, the Ebata family still has two of them in reserve, so we are fine (we recently retrieved one from my parents' house).

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I recently saw a news story about a study that found that the inability to recognize speech sounds can lead to progressive cognitive impairment.

Early wearing of "hearing aids" was recommended, but I think this kind of radio-based system is also effective.

It is nice to be able to hear the audio wherever I carry the radio (for example, I am programming in my study on the 2nd floor while "listening" to the NHK special).

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However, such products seem to be sold quite well, so there may be no need to force the creation of such a system.

However, I think it is quite "good" to sell only a "transmitter (FM transmitter)" and any radio can be used with it, but perhaps the integrated type is better suited to the needs of the elderly.

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I am also creative with my radio batteries.

I am taking various chiseled energy-saving measures, such as making it work with only two batteries.