Sennheiser On White Spaces Ruling: Chicken Little Can Take Sigh Of Relief

Multi stage and studio properties may also effectively increase the number of systems in use through physical distance and transmitter output power management. Techniques such as shifted coordinated frequency sets, zone isolation (natural or enhanced shielding between rooms), directional antennas, and filtered distribution systems, as well as time multiplexing (using systems in different rooms at different times) may also be used.

Noted Joe Ciaudelli, Sennheiser’s White Space spokesperson, “From the start, Sennheiser assessed, communicated and educated. We assessed the issues and commented on the proposed solutions based on proven technologies, rather than the often speculative technologies endorsed by the white space lobby. We communicated with the FCC and elected officials to help them understand the proven benefit of wireless audio devices to maintain the high standard of TV, radio, film, and live entertainment that the entire population has come to expect. We educated our customers, helping them distinguish between the facts and the rhetoric.”

TVBDs categorized as Fixed devices are allowed to operate with effective radiating power up to 4W on channels 2-51, with the exceptions of channels 3, 4, and 37. Those classed as Personal/Portable are restricted to channels 21–51, and are also not allowed in channel 37. In addition, in thirteen major markets where certain channels between 14 and 20 are used for land mobile (municipal and public safety) operations, two channels between 21 and 51 will be reserved and available for wireless microphones. These will be the first open (non-TV) channels above and below channel 37.

Further, the unlicensed consumer devices are limited to 100mW operating power or 40mW if operating in a channel adjacent to an active station. This moderate power will reduce their range and therefore the possibility to cause interference.

Ciaudelli adds, “Although the introduction of TVBDs will pose new challenges for wireless mic users, multi-channel operation can be made reliable through the use of quality equipment operated using best practices. To assist customers with the latter, we encourage them to visit our website or call our help desk hotline, and ideally attend one of our RF Sound Academy seminars.”

For more information:
Sennheiser Website
Sennheiser Spectrum Website