Hearing Impaired System
Church members who use a personal hearing aid often find that it does not adequately receive the sound from the sound system. Others with minor hearing impairments, although not requiring a hearing aid in their normal everyday activities, sometimes also find it difficult to understand speech in large rooms such as chapels. To help these individuals, many wards and stakes have a wireless system.
A low-power radio transmitter broadcasts to a small, pocket-size receiver worn by the user. The receiver sends the sound to a small earphone. A special neck loop is also available that re-transmits the signal to the user’s hearing aid. For individuals to be able to use the neck loop, their hearing aid must have a switch for use with a telephone, and the switch must be in the “T” (telephone) position.
The Church’s hearing impaired system operates in the 70 MHz band. Wherever possible, all of the meetinghouses in a stake should operate on the same channel so that members attending a meeting in a different building can use the same receivers they use in their own ward building.
Each new meetinghouse sound system comes equipped with two of these receivers. Additional receivers can be obtained by calling the facilities manager. An LDSTech broadcast discusses this in more detail.
To prevent interference with other radio services, the power radiated by the hearing impaired system transmitter is limited in the United States by the Federal Communications Commission. This typically restricts reception to within the meetinghouse. The intent of the Church is to provide hearing assistance to those seated in the chapel or the cultural hall. The transmitter or antenna should not be modified in an attempt to increase the coverage.
The earphone jack on the receiver is also the power switch, so the earphone and neck loop should be unplugged when they are not in use. Earphones should be given to repeat users for sanitary reasons. The pocket-size receivers should be checked out of the materials center.