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...

2022 NAB Show Review, Part 1

Many annual NAB Shows have become milestones in TV broadcasting history. The presence of the 2022 NAB Show marked the first Las Vegas NAB Show since 2019.

NAB 22 BEIT Conferences Detail TV Engineering Progress

People visit NAB Shows for many reasons. Some are there to investigate and examine new solutions. Some are shopping with a budget ready to spend. Others visit to gather ideas and figures for next year’s budget. Many visit to a…

5G-MEC Helps Propagate NextGen TV Signals For Mobile Broadcasting And OTT In Korea

With help from their U.S. counterparts at Sinclair Broadcasting Group (SBG), the second-largest television station operator in the U.S., South Korean broadcasters are working on a terrestrial ultra-high-definition (UHD) 4K broadcasting network to be deployed in 2023. It’s a…

As New Transmitters Turn On, NextGen TV Forges Into Uncertainty And Beyond

On the morning of March 9th, Bill Macbeth, Chief Engineer at local Fox affiliate KBSI hit the switch on the station’s Rohde & Schwarz THU9evo liquid-cooled UHF transmitter and, in a video posted on social media, uttered the w…

5G Service’s Use Of C-Band Frequency Causes Interference With Aviation

Although 5G service providers AT&T and Verizon have agreed to delay the launch of more powerful wireless transmissions sent within the C-band spectrum obtained in government auctions from broadcasters around airports—due to concerns over interference with airplane a…