Large Area Assistive Listening Systems: Review and Recommendations

6.1 Universal Receiver: Recommendations

The need for a universal receiver was highlighted when it was suggested that standardized transmitting characteristics for both FM and IR ASL be required. This suggestion was not accepted. It was felt that mandating standardized transmitting characteristics to which all the manufacturers would adhere would stifle innovation and creative new developments. Nevertheless, consumers should have the option of purchasing a personal ALS receiver that can be used in any large venue they attend. If "universal access" cannot be obtained by standardizing transmission characteristics, then it should be sought by the development of a "universal" receiver. Such a device was available until quite recently, but is no longer being manufactured. This is an option that should now be resurrected and available to consumers. Many people prefer to purchase their own ALS receiver, one that they could use in any venue with any type of ALS. This is more than just a convenience; it provides these people with the security of knowing that their ALS receiver functions well and in accordance with their personal needs. We have already recommended, above, that venues note the transmitting frequencies of the ALS on their signage.

We recommend that the industry be encouraged to develop a "Universal Receiver", one that can be (1) tuned to any FM frequency used in ALS in the 72‒75 MHz or 216‒127 MHz range, either wide or narrow channel, (2) adjusted to detect any of the sub-carriers used with IR systems, and (3) include a telecoil for usage with IL systems. Additional desirable features would be an environmental microphone and a "low battery" warning light.