Built for those where UHF “TV band” spectrum is limited or congested, ULX-D 900 MHz features components and accessories optimized for use within regional variations of the 902-928 MHz spectrum, generally known as the Industrial, Scientific, and Medical (ISM) band. As such, ULX-D customers can experience high-quality digital wireless audio in an alternative band, free of the regulatory issues wireless microphone users currently face, or may eventually face, in the saturated UHF TV band.
Shure attests that they have conducted extensive scanning, site surveys, and product testing in the 900 MHz ISM spectrum, insuring that the ULX-D option performs to the same standards of that system when the application and RF environment are a good fit. The 900 MHz ISM band may also be used by devices such as wireless internet access points, security systems, smart meters, Bluetooth devices, two-way radios, and intercoms.
Shure has also announced that the latest version of its Wireless Workbench 6 software (version WWB 6.11.2) will feature a new Site Survey tool that enables customers to assess the availability of 900 MHz ISM spectrum in a particular venue. The Site Survey Tool uses the receiver to capture a long-term scan and processes the data to provide a Usability Report, indicating an approximate number of usable channels in the ISM band.
In general, ULX-D 900 MHz systems are best suited for indoor use, where the environment can be assessed before the systems are installed. Usage outside of these applications is certainly an option, but Shure recommends consulting with an authorized retailer if there is any question about which band is the best fit when purchasing ULX-D Digital Wireless Systems.
In the U.S., pricing for ULX-D 900 MHz systems starts at $1,320 and can support up to 12 compatible channels per frequency band, or up to 73 channels in high density mode.