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Harris Corporation Unveils Breakthrough HD Radio(TM) Combining Method; Split-Level(TM) Combining System Will Reduce Operating Costs and Enable Broadcasters to Leverage Existing Equipment.

Harris Corporation recently unveiled an innovative new technology that offers FM stations a significantly more efficient method of transmitting an HD Radio signal. The patents-pending approach of the company's new Split-Level Combining System can reduce an FM station's energy costs by as much as 25 percent over High-Level Combining, and enables stations to continue using existing FM analog transmitters that are already operating near peak capacity.

"This new, more efficient method of adding HD Radio to FM stations is sparking great interest among FM broadcasters," said Jeremy C. Wensinger, president, Harris Broadcast Communications Division. "Our engineers estimate that a station's overall power consumption could be between 5 and 25 percent less than with High-Level Combining."

Split-Level Combining utilizes the existing FM transmitter and a new common-amplification FM/HD Radio transmitter to generate the required FM analog power. Driving both ports of the high-power combiner with analog FM power improves combining efficiency, reduces combiner losses, reduces existing FM transmitter power requirements and improves overall system efficiency, resulting in lower monthly operating costs. With the Split-Level Combining System, the analog transmitter is no longer required to operate at higher- than-normal power levels to offset combining losses.

Split-Level Combining also allows a station to use the existing transmission line and antenna system for optimum radiation of both the digital and analog signals. Additionally, for stations with physical space constraints at their transmitter site, Split-Level Combining allows broadcasters to remove the current backup transmitter and utilize the common amplification FM/HD Radio transmitter as a lower power backup FM transmitter.

Announced at the NAB 2004 Public Radio Engineering Conference in April, the Split-Level Combining System was developed by Harris Principal RF Design Engineer George Cabrera and Steve Fluker, director of engineering for Cox Radio, Orlando, Fla. In recent tests, WPYO-FM, Orlando, utilized a Harris HT- 5FM analog transmitter and a Harris Z16HD digital transmitter with a standard 3-dB high power combiner to prove the split-level concept and confirm the benefits of this technique.

About Harris Broadcast

Harris Broadcast Communications Division is one of five divisions within Harris Corporation, an international communications equipment company focused on providing assured communications(TM) solutions for government and commercial customers in more than 150 countries. One of the world's leading suppliers of broadcast technology, Harris Broadcast Communications Division offers a full range of solutions that support the digital delivery, automation and management of audio, video and data. For more information, visit

"HD Radio" is a trademark of iBiquity Digital Corporation.

CONTACT: Jackie Broo, Manager, Public Relations, of Harris Broadcast Communications Division, +1-513-459-3547; or cell, +1-513-226-8405; or

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Publication:PR Newswire
Geographic Code:1USA
Date:Jun 2, 2004
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