Comrex’s EarShot IFB Can Lower Production Costs


Any production a broadcast professional tries to get set up will no doubt cost them a lot of time when it comes to the creativity needed for the content to be made and organized. But the cost of the production alone will amount to the kind of chunk companies like Comrex work to alleviate, and their EarShot IFB is one of the many tools in their inventory to help do that for the many creatives thriving in our current digital ecosystem.


About Comrex



Since the company was first founded back in 1961, Comrex has served as the vanguard of technical development by making use of new and innovative technologies for radio and television well before they made it into the mainstream. Comrex designs and builds equipment that uses the most advanced available technology to connect broadcasters with their audiences. The company works to build reliable, user-friendly tools that engineers can trust to work, even during the most complicated broadcasts.

For more nearly six decades, Comrex has manufactured the highest quality broadcast equipment used by radio and television professionals on a global scale. Several of Comrex’s products include their industry-leading ACCESS and BRIC-Link IP audio codecs. These devices serve a variety of audio transport applications, and that includes sports play-by-play, voiceover, studio-transmitter links, and more.


                                         LiveShot IP


The LiveShot IP video codec is the industry’s only bonded cellular (or IP) offering, and it provides users with a two-way video, along with two IFBs. This makes it a complete live wireless newsgathering hardware-based solution. By bonding multiple data channels, and the industry’s most advance Adaptive Management EngineAll, Comrex’s codecs, including the CrossLock VPN Technology, help provide an unparalleled level of reliability for the transmission of high-quality audio and/or video over the public Internet. The company also offers guest interview solutions including telephone hybrids for POTS and VoIP as well as an IP audio gateway called Opal for expert guests.

The ACCESS and BRIC-Link IP audio codecs make use of sophisticated audio transmission technology to ensure reliable broadcasts over challenging IP networks. Thanks to years of experience in IP, Comrex was able to develop the CrossLock tools that could handle the unique demands of transmitting video, with the development of their LiveShot IP video technology. And these efforts have essentially refined their telephone hybrid technology with products like VH2, and new, more affordable ground can be made with products like the EarShot IFB, which makes the budgetary costs for a broadcaster’s production significantly lower.


Comrex‘s EarShot IFB



Comrex’s EarShot IFB is a hardware-based system that provides live audio feeds to callers. The EarShot IFB provides broadcasters with a telephone-based live studio program and IFB audio to field-based remote broadcasts such as TV ENG reports. About 30 callers can dial in and listen to the audio feeds, which makes it possible to replace up to 30 POTS lines with one simple box.

Because most stations still use POTS (Plain Old Telephone System) lines to supply their IFB feeds, the need for Television broadcasters to reduce costs and stay within budgets becomes more essential, especially when the use of POTS lines only results in burning more cash than it makes. Comrex built the EarShot IFB to bring the power of VoIP (Voice-over-IP) to IFB technology.

Several features of the EarShot IFB include:

  • Four audio inputs (two of which can be configured for IFB)
  • Can handle up to 30 callers
  • Selectable audio feeds
  • Cost-saving VoIP technology
  • Uses G.711, and can be configured for higher quality audio

For more information about the EarShot IFB, visit


Why Comrex Is Good For The Broadcast Industry



When it comes to the broadcast industry, and the creativity driving it, there is nothing to say that doesn’t illustrate just how well it equipped it is with highly talented professionals and a range of unique brand names. A company like Comrex that has been producing the highest quality broadcast equipment, and with the added bonus of more flexible costs, broadcasters have only more legroom to work on their productions with less budgetary constraints holding back the very potential that helps their content and the brand it supports.

For more information on Comrex, visit,



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