Comark Releases PARALLAX Compact Transmitter For SFN And NextGen TV

Comark has announced the release of the PARALLAX Compact UHF / VHF liquid-cooled, solid-state DTV transmitter for SFN and NextGen TV requirements. The PARALLAX Compact is an evolution of the company’s existing product family delivering an efficient package for small transmitter sites.

Comark originally introduced the PARALLAX liquid-cooled, solid-state DTV transmitter product line at NAB 2015. PARALLAX Compact is a simplified and condensed version of the transmitter that is intended for low and medium power DTV requirements of 10kW and below including Single Frequency Network (SFN) and NextGen TV applications.

The Compact transmitter system can be equipped with 1 to 6 Power Amplifiers (PA’s) in a single 27RU transmitter cabinet that is only 54” tall. It can deliver 1.8 to 10kW UHF or 1.5 to 8.4kW VHF output power levels measured after the mask filter. PARALLAX Compact ensures top-notch RF performance; it shares the same PA module design that features broadband Doherty LDMOS FET devices. These devices not only provide broadband high efficiency operation but also have the benefit of providing the equivalent output power in ATSC 1.0 (8VSB) and ATSC 3.0 (OFDM).

PARALLAX Compact provides a future proof design to broadcasters:

  • Latest “Ocean” control system with a large 15” touch screen user interface
  • High efficiency with wideband Doherty technology
  • Unique vertical high-gain power amplifiers,
  • 2kW per PA module for UHF; 1.6kW per PA module for VHF band 3
  • Asymmetrical Doherty; provides same power in 8VSB (ATSC 1.0) and OFDM (3.0)
  • EXACT-V2 DualCast ATSC 1.0 / 3.0 upgradeable; preserves investment
  • Single or dual drive design depending on redundancy needs
  • Hot-swap AC to DC rectifiers with >96% efficiency, 3:1 ratio of rectifiers to PA
  • Full remote control and monitoring with built-in web GUI and SNMP
  • Made in the USA; serviced and supported out of Southwick, MA

You might also like...

Local TV In The U.S.A – 1967 Style

Our very own TV pioneer shares recollections of local TV in the US from his start in 1967.

Monitoring & Compliance In Broadcast: Monitoring Delivery In The Converged OTA – OTT Ecosystem

Convergence or coexistence between linear broadcast, IP based delivery and 5G mobile networks creates new challenges for monitoring of delivery paths, both technically and logistically.

Seeing The Streaming Tsunami Coming

Streaming video is on the cusp of becoming a major problem for broadband networks. We are about to see a huge Tsunami wave of demand emerge as broadcasters finally make a big shift towards streaming-first.

Monitoring & Compliance In Broadcast: Monitoring The Media Supply Chain

Why monitoring the multi-format delivery ecosystem starts with a holistic approach to the entire media supply chain.

Fixing The Internet For Streaming

There seems little doubt that the consumer transition from OTA/DTT delivery towards streaming is on a steep growth curve, but what will the new ecosystem look like? Is internet infrastructure ready to handle the bandwidth demands of full-scale streaming?