Comark To Intro EC700MP Transmitters At NAB

Hitachi Kokusai Electric Comark, a manufacturer and supplier of DTV transmitters, encoding systems, and associated field services for over 45 years, will introduce its E-Compact EC700MP series high-efficiency, air-cooled solid state UHF DTV transmitters at this year’s NAB Show in April. The new series is available in 170W, 350W and 1kW RF output power levels.

The E-Compact HP series was introduced at NAB 2016 and subsequently “repack optimized” for the U.S. market with output power levels of up to 10kW.  Many HP series transmitters are already on-air, serving customers throughout the U.S. and Puerto Rico.

The introduction of the E-Compact MP series fills out the air-cooled UHF product portfolio with high-efficiency, low-power models (170W, 250W, and 1kW).  All E-Compact transmitters (MP and HP series) incorporate the latest asymmetric broadband Doherty LDMOS amplifiers (the same device as the award winning Parallax series liquid-cooled UHF transmitters).

The PA design includes automatic cooling fan speed control that provides lower acoustic noise levels during operation. The E-Compact family also features EXACT-V2 IP Optimized DTV exciters with DualCast technology and is easily upgraded from ATSC 1.0 to 3.0.

The EC710MP-BB transmitter is being introduced for customers requiring a compact, 1kW solution.  This 1kW transmitter features separate PA and PSU chassis that utilize only 4RU’s of cabinet space. In addition, future compatibility with both ATSC 1.0 / ATSC 3.0 is ensured, providing the same output power for either standard.

The EC710MP-BB features N+1 hot-swap PSU modules, providing 25% PSU redundancy.


The E-Compact family is compact and rugged, perfectly suited for broadcasters looking to upgrade or replace older, less efficient equipment currently at their TV stations or for future ATSC 3.0 SFN systems.  The E-Compact EC710MP-BB 1kW transmitter will be on display at NAB 2019 at Hitachi Kokusai Electric Group’s booth, C4409.

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