Comark Releases New Air-Cooled Solid-State UHF DTV Transmitters

Hitachi Kokusai Electric Comark (“COMARK”), has announced the introduction of the E-Compact EC705LP-AT1 (50W) and EC720LP-AT1 (125W) series high-efficiency air-cooled solid-state UHF DTV transmitters.

These two new models, EC705LP-AT1 and EC720LP-AT1, incorporate the ATSC exciter, driver, and final PA into a single rack-mountable chassis. The EC720LP-AT1 includes a slot that can accommodate a second, optional backup power supply for 100% redundancy. The power supplies utilize a front panel plug-in connection for quick service. The air-cooled PA design includes automatic cooling fan speed control that provides lower acoustic noise levels during operation and saves electrical energy while increasing the life span of the fans. Customers can either mount the transmitter in their existing equipment rack cabinet or an optional 10RU rack supplied by COMARK.

The EC700LP-AT1 series of transmitters feature System-on-Chip (SoC) technology. SoC integrates multiple system elements into a compact architecture utilizing high power processing power and superior reliability. SoC embeds powerful software such as MER measurements, IMD measurements, as well as linear and non-linear automatic digital pre-correction. The transmitters include front panel controls, comprehensive web-GUI, and SNMP for remote control and monitoring. An optional off-air receiver is available so that these units can be operated as a translator. The E-Compact family is compact and rugged, perfectly suited for broadcasters looking to replace their current older and less efficient equipment. 

You might also like...

The World Of OTT (Content Pt4) - Personalizing Content For Maximum Impact

A core promise of OTT is greater customer satisfaction through a more personalised viewing experience. Instead of linear channels with scheduled content that we may or may not be interested in, OTT enables us to combine tailored VOD and Live…

Microservices For Broadcasters - Part 1

Computer systems are driving forward broadcast innovation and the introduction of microservices is having a major impact on the way we think about software. This not only delivers improved productivity through more efficient workflow solutions for broadcasters, but also helps…

Timing: Part 2 - The Birth Of Video Recording

The peculiarities of the motion of planet Earth are responsible for much more than seasons and the midnight sun and it took a while before it was all figured out.

Microphones: Part 1 - Introduction

In this new series John Watkinson looks at all aspects of microphones, including how they work and how they don’t work.

Practical High Dynamic Range (HDR) Broadcast Workflows - Part 2

There is a school of thought that suggests increasing the brightness through the contrast control on a television will give a higher dynamic range. However, this doesn’t necessarily increase the contrast ratio. Quantization noise is the enemy of dynamic r…