All posts by Gary Stigall

Bonus March Chapter Meeting: SAS and Recent Digital Audio Protocols

While AES-67 Audio over IP and now AES-70 (GPIO and Control over IP) are popular in the radio broadcast world, a little known standard called IEEE-802.1 (also called AVB), is continuing to grow in the TV/Film, Production, Automotive and Consumer Industries. AVB (“Audio Video Bridging”) is an Audio over Ethernet (AoE) mechanism with auto QoS. With its growing popularity many other industries, the IEEE is positioning this technology to replace HDMI in entertainment systems, gaming consoles and TV Displays. AVB provides a mechanism for intuitive control and discovery. AES-67 is an Audio over IP (AoIP) topology, and while development is ongoing for “control and discovery”, (as is AES70), it’s poised to become the industry standard for radio broadcasting. We’ll outline key differences and typical applications for each protocol.

Al Salci of Sierra Automated Systems and Engineering Corp. visits us Wednesday, March 27 at 12 noon at iHeartMedia, 9660 Granite Ridge Drive, San Diego. He provides lunch, then will give the presentation. Members and guests are all welcome.

About our Guest Speaker

Al Salci is a veteran analog and digital designer, and software engineer with over 35 years experience in broadcast communications. Originally from Toronto Ontario, Al holds a Bachelor of Science degree from Toronto College of Electrical Engineering & Technology. Al started his career in Television Broadcast designing time code products for Telcom Research, Evertz Systems and Leitch Video. Al moved into radio in 1983 as Director of Engineering for McCurdy Radio Industries where he developed audio consoles, switchers, intercoms, and other audio products.

Later, Al joined RTS systems in Burbank as Senior Digital Design Engineer and developed 4-wire intercom systems to enhance their 2-wire TV camera communications networks. Al Salci teamed up with Ed Fritz, another veteran design engineer in Burbank and started Sierra Automated Systems & Engineering Corp. that specializes in high-density digital audio distribution and management systems, audio control console surfaces, large-scale AoIP systems, and fully integrated intercom systems. SAS is celebrating over 34 years.

Chapter 36 Election Returns Announced

SBE Chapter 36 held an online election and named its new lineup of officers.

Chairman Tony McDaid and Vice-chairman Mike Curran each took a second term.

Oscar Quintanilla, veteran headend engineer at Cox Communications, volunteered to take on the role of Secretary-Treasurer. He’s an Advanced Class ham radio operator, KF6YB. He and Chris Durso maintain several VHF and UHF ham repeaters around town.

All three ran unopposed.

McDaid thanked Secretary-Treasurer Jessica Colyer and Program Chairman Bart Schade for their service in the past year. Meeting program management will be performed by the executive committee in the coming year.

Jaime Bonilla Cuts Off BCA

XHPRS-FM 105.7 and XEPE-AM 1700 have discontinued their operations agreements with San Diego-based Broadcast Company of the Americas, aka BCA Radio. The stations, known as “105.7 Max FM” and “ESPN 1700” were shut down in mid-December after a reported payment dispute with the license holder, Media Sports de Mexico, owned by Jaime Bonilla Valdez.

Their respective websites continued streaming programming until the end of February 2019. BCA continues to operate XEPRS 1090-AM, known as the “Mighty 1090 AM.”

GPS Date to Rollover April 6 on Some Electronic Devices

Some compare the change to the famous “Y2K” transition at the end of the twentieth century. An information security expert said at the RSA 2019 conference in San Francisco last week, “I’m not going to be flying on April 6.”

Global Positioning System (GPS) receivers limited the number of stored digits needed to count the date, so some devices will roll back to zero on April 6, 2019.

Broadcasters seldom directly use GPS to supervise station activities. Most often, a GPS-based device might be used to indirectly correct a wandering computer clock, or as a time standard in a precise oscillator where its pulses are measured but the date may be ignored.

However, GPS is used often for time stamping video and for displaying time of day. I contacted Bill at El Segundo Electronics, ESE, about whether his ES-series clocks, used widely around broadcast stations, might have the 10-digit time problem. He replied, “The supplier for our GPS receivers assures us that there will be no problem with the WNRO (Week Number Roll Over) on April 6, 2019. Our Chief Engineer recommends that you keep the unit powered up and running over the WNRO.”

Thanks for the news tip, Bill Lipis.

March 13 Meeting: DVEO and Developments in OTT, IPTV

Over-the-Top and IPTV continues to evolve with more infrastructure bandwidth and more bandwidth-efficient compression schemes. Learn about Dozer™ ARQ and other protocols now built in to some of the encoder/decoder pairs DVEO offers that give live media transmission a whole new level of dependability.

Local supplier DVEO representative Nicholas Joseph will present “OTT/IPTV: One of the Futures of Content Delivery” at the next SBE Chapter 36 meeting. Join us Wednesday, March 13, 2019 at 12 noon at iHeartMedia, 9660 Granite Ridge Drive, San Diego. We’ll have his presentation after a free lunch.

About Our Speaker

Nicholas K. Joseph was born and raised in San Diego and earned an EE degree from San Diego State University. In 2011 he was hired at DVEO for sales support, and has since become Senior QA and Tech Support Engineer for DVEO video streaming products.