GatesAir Intraplex® IP Networking Solution Eliminates Interference Between Two California FM Stations

Transition to IP Link MPXp with integrated SynchroCast technology unifies two stations on a powerful new single-frequency network – and saves the operation $1700 a month in the process
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CINCINNATI,�October�18,�2017���GatesAir, a global leader in wireless, over-the-air content delivery solutions for radio and TV broadcasters,�has supplied an�Intraplex��intelligent IP networking and synchronization solution to�KCSN(FM)�for resilient�signal transport�across�its�new single-frequency network (SFN).�

Broadcasting on 88.5�MHz�from the campus of California State University in Northridge, KCSN�has long�struggled with�mutual interference�with�another�FM station, KSBR,�broadcasting on the same frequency from�Saddleback College�in�Orange County.�The transition to an SFN with Intraplex�IP�networking brought the two stations together into a unified operation, solving the problem of interference as listeners traveled through�the�Los Angeles area.

�While KCSN has a clear signal in the northern metro area, it would turn into a horrible mishmash of two signals as drivers traveled south toward Orange County,� said Michael�Worrall,�technical director and chief engineer, KCSN.��The same happened for�KSBR�listeners�as they�drove north. The only solution was to join forces with a common format, and have the same program broadcasting from�alltransmitters.�We�wanted to utilize the best, state-of-the-art products to help overcome the obstacles that have historically hindered SFNs,�so we consulted with some of the best minds in the business�at GatesAir and elsewhere�to find the right technical solution.�

Those consultations�steered KCSN toward an SFN architecture�that�provided�a seamless transition between transmitters as people travelled through the region.�The complete system brings three transmitters�KSBR, KCSN main and a KCSN booster in Beverly Hills�together using an Intraplex IP Link MPXp codec with integrated Intraplex SynchroCast��technology�to�simulcast and�time-lock the signals.�This�technique ensures that the three overlapping transmitters operating on the same frequency,�and avoid interference with each other while broadening overall signal coverage.

Worrall migrated�from a T1 architecture�to IP based on several new efficiencies that the IP Link MPXp brought to the surface, including lower monthly costs, reduced capital investment, and support for a transparent AES192 digital multiplex composite signal.�A competitive analysis of MPX codecs on the market proved that the GatesAir solution excelled in dual-domain design, network reliability and built-in dynamic SFN capability.�The migration from T1 to IP has�also�saved the operation about $1700 each month, which uses a�very wide-bandwidth,�private Ethernet service from AT&T to accommodate all signal networking.

�The MPXp allows us to originate the baseband signal at our Northridge studios, and duplicate that signal within the codec,�maintaining strict control of signal levels and phase�across the network,� said Worrall. �We�re confident that the high-quality AES192 audio is�being delivered to all three transmitters�identically.�It also gives us a simultaneous analog�MPX composite output to route�program audio�to our backup transmitters, which aren�t�yet�capable of accepting an AES192 digital stream. We can do this all from one codec, and without the�burden�of adjusting audio levels in T1 frames to�match�modulation levels. The MPXp keeps those modulation levels identical, which eliminates the noise floor�for�the�cleanest�signal for�our�listeners. And we�re doing this all for about $330 per month���compared to $2,000 a month had we remained on T1 � without sacrificing any reliability associated with signal transport.�

�GatesAir has long been at the forefront of innovation in intelligent networking to problem-solve interference and coverage shortcomings in over-the-air broadcasting,� said Bruce D. Swail, CEO, GatesAir.��Our Intraplex solutions are providing the best of�both�worlds for KCSN by providing a far more robust signal over greater distances, and simultaneously saving our customer thousands of dollars annually.�

About GatesAir� ��

GatesAir, Inc.,�a portfolio company of The Gores Group,�provides complete solutions for over-the-air radio and television broadcasting, leveraging wireless spectrum to maximize performance for multichannel, mission-critical services. Powering over-the-air networks worldwide with unparalleled reliability for nearly 100 years, GatesAir�s turnkey solutions enable broadcasters to create, transport and transmit radio and TV content.� With customers in more than 185 countries, the company leads the industry in innovation and design breakthroughs, improving efficiency and reducing total cost of ownership�with all products�designed and assembled�in�the�USA. Visit��for more information, Like us on Facebook�, and follow us on Twitter at�@GatesAir.

About The Gores Group

The Gores Group, founded in 1987 by Alec Gores, is a global investment firm focused on acquiring controlling interests in mature and growing businesses which can benefit from the firm's operating experience and flexible capital base. The firm combines the operational expertise and detailed due diligence capabilities of a strategic buyer with the seasoned M&A team of a traditional financial buyer. Over its 30-year history, The Gores Group has become a leading investor having demonstrated a reliable track record of creating value in its portfolio companies alongside management. Headquartered in Los Angeles, The Gores Group maintains offices in Boulder, CO, and London. For more information, please visit�