The project included a “flash-cut” of the NHPBS Stewartstown transmitter site, which has officially begun broadcasting over-the-air (OTA) service using the ATSC 3.0 standard, also known as NextGen TV.
As part of the upgrade, HVS provided design, consulting, hardware and configuration services to modernize NHPBS’s statewide network, which includes three full-power transmitter sites in Durham, Keene and Littleton, as well as low-power sites in Hanover and Stewartstown.
A key feature of the upgrade is the implementation of regionalized Emergency Alert System (EAS) messaging. Previously, NHPBS distributed the same EAS messages to the entire state. Given New Hampshire’s 190-mile span and varied terrain, the new system — using Digital Alert Systems’ DASDEC-III and DASDEC-EXR units — allows each regional transmitter to broadcast alerts specific to its coverage area.
“By strengthening air-chain redundancy and enabling regionalized emergency alerting, this upgrade positions NHPBS to better serve its communities today while laying a strong foundation for statewide NextGen TV operations,” said Dan Whealy, president of Heartland Video Systems.
The upgrade began at the NHPBS studio in Durham with the replacement of legacy ATSC 1.0 encoders with new Harmonic XOS units. These units integrate MPEG-2 5xHD program licenses, Dolby audio and Nielsen watermarking into a simplified workflow.
For the ATSC 3.0 signal path, HVS installed a separate pair of Harmonic XOS encoders with HEVC-DASH outputs. These feed redundant Triveni Digital GuideBuilder XM ROUTE servers and Broadcast Gateways at each of the five transmitter sites.
At the Stewartstown site, HVS provided a new Rohde & Schwarz TMU9evo air-cooled UHF solid-state transmitter. The unit is capable of 1,025 kW output and features dual-drive exciters licensed for ATSC 3.0 and GPS-based time synchronization.
To ensure signal health, HVS supplied a Triveni Digital StreamScope XM analyzer for the Durham studio and an Airwavz.tv TVXplorer for mobile testing at the Stewartstown site.
“What began as a bit of an overwhelming task, HVS quickly and expertly guided us to a solution that prepares us for the future,” said Tom Nickodemus of NHPBS. “The HVS team worked tirelessly until we had met our objective.”
The post Heartland Video Systems Completes ATSC 3.0 Upgrade For New Hampshire PBS appeared first on TV News Check.
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