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Doug Lung's RF Report
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DTV Station Status
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by Doug Lung, 4.25.2008
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An update of the FCC DTV database.
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Mobile TV: The Next Big Thing?
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4.18.2008
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Throughout this week’s show in Las Vegas, presentations directly or indirectly related to M/H broadcasting addressed antenna, building penetration loss, propagation, single frequency networks and many other topics.
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Increasing Interest for Single Frequency Networks
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4.18.2008
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The U.S. broadcast model of a single high power transmitter on a tall tower or mountain works well in many areas, but in many other markets a large number of people live in areas shadowed from the transmitter site.
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Is It Time to Replace Longley–Rice?
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4.18.2008
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Sid Shumate, senior appraiser and director of engineering for the BIA Financial Network (BIAfn) Consulting Division, documented the problems with the Longley–Rice model and offered solutions in his paper.
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Broadcasters Look to CP Antennas for Improved M/H Performance
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4.18.2008
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Kerry Cozad, senior vice president of engineering and technology for Dielectric Communications, detailed research done at Dielectric on the value of circular polarization (CP) compared to vertical or horizontal polarization.
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Walking the DTV Transition
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4.18.2008
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As I walked the floor at this week’s NAB Show, I noticed few cues that a major change in broadcasting was coming in less than a year. Indeed, looking at the transmitter displays you might have thought the DTV transition has already been completed!
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Hughes Activates First Customer for SPACEWAY 3 Broadband Service
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by Doug Lung, 4.11.2008
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SPACEWAY 3 has a gross capacity of 10 gigabits per second, which Hughes claims makes it the “highest traffic-carrying satellite to be brought into service in North America.”
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NatGeo to Use TV Frequencies for Wildlife Sensing, Imaging
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by Doug Lung, 4.11.2008
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The latest list of FCC experimental license grants includes a license allowing use of VHF and UHF TV frequencies for wildlife sensing and imaging within Washington, D.C.
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FCC to Host EAS Summit
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by Doug Lung, 4.11.2008
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The FCC Public Safety and Homeland Security Bureau will host a summit on the nation’s Emergency Alert System Monday, May 19, 9:00 a.m.-12:45 p.m., in the Commission Meeting Room.
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Dielectric Communications Expands Testing Operations
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by Doug Lung, 4.11.2008
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Additions include a 60-foot tapered electromagnetic anechoic chamber, a 950-cubic-foot high-power passive intermodulation chamber and a 64-cubic-foot thermal chamber.
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