Broadcaster Magazine


Hitachi Kokusai Electric Comark Presents E-Compact DOHERTY Air Cooled Transmitter Family

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  • Hitachi Kokusai Electric Comark LLC, a manufacturer and supplier of DTV transmitters, encoding systems, and associated field services for over 40 years, has announced the introduction of the E-Compact series of high efficiency air cooled solid state UHF DTV transmitters.  The E-Compact is available to support the worldwide DTV Industry; available in ATSC, ISDB-T, and DVB-T/2.

    The E-Compact series utilizes Doherty solid state amplifier technology; requiring less energy to deliver more power.  The heart of the transmitter is a 3RU amplifier chassis that produces over 800 watts RMS in ATSC.  The design now includes Quick Coupling System for easy maintenance of the power drawers (Hot Swappable).  The exciter is available with “DualCast” technology which is easily upgraded via firmware from ATSC 1.0 to 3.0; protecting investment today for use tomorrow.

    The E-Compact platform 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 product family is now available in 700 Watts through 8,500 Watts (ATSC) in post filter measurements.  E-Compact incorporates Doherty 50VDC LDMOS devices and air cooling to ensure ultimate reliability and efficiency.  The new Automatic Fan Speed Control provides lower acoustic noise levels during operation.

    User control and monitoring is simple with the E-Compact – a front panel man-machine interface provides the basics while a built-in web server allows more in-depth metrics and control.  And an optional SNMP client is available for broadcasters that want remote access back to a central network operations center (NOC).  The E-Compact transmitter will be on display at the Hitachi Kokusai Electric Group’s booth, located at C4309.


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