HD Radio Diversity Delay
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HD Radio Diversity Delay Field Observations

Webinars by SBEInstructional Method: Online/Webinar

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About Your Instructor

SBE Recertification Credit



The hybrid digital and analog broadcasting solution deployed in the United States, FM and AM IBOC, more commonly known as HD Radio*, allows simultaneous transmission of broadcast radio signals in both the analog and digital domain. A key component is that receivers can immediately acquire the analog signal and then transition (or blend) into the digital signal after it has acquired and buffered. Audible blending artifacts are the top HD Radio complaint from auto manufacturers and consumers. The majority of the problems can be traced back to individual broadcast stations. The industry has long relied on manual management of diversity delay and time alignment. However, the results in the field often have shown us that stations set manually have been known to drift over time. This presentation will cover some of the causes of drift and how those can be resolved. However, we have learned there are a myriad of potential problems that can cause drift that are out of control of any individual device that has been traditionally installed in the broadcast chain. What is needed is a systems approach to this problem. This presentation will discuss implementing various combinations of hardware and/or software to provide continuous monitoring and adjustment of diversity delay in real-time to reduce or eliminate the objectionable blending artifacts impacting listeners.

* HD Radio is a trademark of DTS.

  Alan Jurison



About Your Instructor - Alan Jurison, CPBE, AMD, DRB, CBNE

Alan started his career in broadcasting at age 15 with Pilot Communications in Syracuse, NY. During this time, he developed the technical aspects of the industry’s first remote voice-tracking for stations in distant cities which is now commonplace in the industry. He graduated with a B.S. in information management and technology from Syracuse University and was promoted to regional information systems manager and broadcast engineer for Citadel Broadcasting. For 11 years, he led many IT and engineering projects companywide.

In 2012, Alan joined iHeartMedia as a senior operations engineer for the corporate Engineering and Systems Integration group. Much of his focus has been on deploying and advancing iHeartMedia's digital HD Radio data services.

Alan is a member of the Society of Broadcast Engineers (SBE) and holds several certifications, including Certified Professional Broadcast Engineer (CPBE), AM Directional Specialist (AMD), Digital Radio Broadcast (DRB), and Broadcast Networking Engineer (CBNE). Alan has been in the radio industry for 20 years and offers a unique prospective on the convergence of IT and broadcast engineering.

SBE Recertification Credit

The completion of this webinar from Webinars by SBE qualifies for 1 credit, identified under Category I of the Recertification Schedule for SBE Certifications. 

Registration and Pricing   

SBE Members and MemberPlus Members: Free thanks to HD Radio

* HD Radio is a trademark of DTS.

HD Radio logo

Non-Members: $89

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If you have questions regarding this webinar, contact Cathy Orosz via email or by phone at 317-846-9000.


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