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Frequentis AG: Acquisition of Australian-based C4i complements Frequentis global Defence portfolio

Vienna (pta012/02.08.2021/09:08 UTC+2)

  • Completion of the acquisition of C4i Pty. Ltd., formalised on 30 July 2021, completes the L3Harris transaction of 23 February 2021
  • C4i will strengthen Frequentis worldwide Defence business and portfolio with its highly secure interoperable communications solutions for mission-critical environments
  • C4i will operate as an independent brand in the high-end Defence trusted supplier market with specific focus on US, Australia, UK, and allied markets

"We are delighted that with the closing for C4i we completed the transaction with L3Harris in such a short time. As a new entity of the Frequentis Group, C4i will significantly reinforce Frequentis capabilities in the very important Australian and US markets for multi-domain cyber secure Defence communications," says Frequentis’ CEO Norbert Haslacher. "We will combine the strength of Frequentis and C4i mission-critical communication platforms, to provide market leading technology and solutions based on extensive security, compliance and export handling processes. Frequentis is market leader in communication systems for military Air Traffic Management. Together with C4i, we will now secure a globally dominating position also in the Defence Command & Control market".

C4i, headquartered in Melbourne, has been operating successfully in the Defence Command & Control market for more than 20 years. In the course of the acquisition by Frequentis, C4i is re-established as an independent brand. It will remain a separate business entity within the Frequentis Group with its own ringfenced security protocols and will focus on US, Australia, UK, and the allied markets. Founded more than 20 years ago, C4i currently has about 80 employees and most recently generated revenue of about USD 17 million (EUR 14.4 million) per annum.

Darren Gardner, who has been C4i´s Managing Director since 2017 will continue to lead C4i Pty Ltd. Martin Rampl, Frequentis Australasia Managing Director, will support the integration process and future positioning of C4i. "Frequentis will further expand its Defence business in Australia and US with further investment into products and facilities," says Martin Rampl. "Australia will benefit from C4i’s sovereign Australian capability and from increased global export opportunities. Finally, the close relationship between Australia and the USA will foster enhanced trusted collaboration for US based business."

The first significant public appearance of the C4i brand is planned for the prestigious Aerospace & Defence Avalon Airshow exposition, taking place in Geelong, Australia, from 30 November to 5 December 2021.

About C4i

C4i Pty. Ltd., former Harris C4i Pty. Ltd., designs, manufactures and integrates tailored mission-critical communications solutions for Defence all over the world. The company has a proven record of successfully delivering interoperable communications systems to these demanding market for over 20 years.

In 2013, C4i became a business unit within Exelis, which in 2015 became part of Harris Corporation. In the course of the acquisition by Frequentis, C4i is re-established as independent brand, remaining a separate business entity within the Frequentis Group.

For more information on C4i, please visit


Frequentis, headquartered in Vienna, is a global supplier of communication and information systems for control centres with safety-critical tasks. Such 'control centre solutions' are developed and marketed by Frequentis in the business sectors Air Traffic Management (civil and military air traffic control, air defence) and Public Safety & Transport (police, fire brigade, ambulance services, shipping, railways). As a global player, Frequentis operates a worldwide network of branches, subsidiaries, and local representatives in more than 50 countries. Products and solutions from Frequentis can be found in over 35,000 operator working positions and in approximately 150 countries. 

Frequentis has been providing the defence market with mission-critical communication, information, and surveillance systems for over seven decades. The fully redundant, highly-available communications framework is used by joint and combined forces in today’s command centre operations – be it in the air, at sea, or on land. The offering also includes end-to-end system integration and turnkey delivery capabilities, allowing customers to focus solely on their core mission. The cross-segment approach addresses the market need for inter-agency collaboration and shared situational awareness.

The shares of Frequentis AG are traded on the Vienna and Frankfurt Stock Exchange under the ticker symbol FQT (ISIN: ATFREQUENT09). In 2020, the Frequentis Group had about 1,900 employees worldwide and generated revenues of EUR 299.4 million and EBIT of EUR 26.8 million.

About FREQUENTIS Australasia

Frequentis Australasia Pty Ltd was established in 2004 as a subsidiary of Frequentis AG. Frequentis Australasia delivers and supports communication and information management projects for air traffic management, defence, public transport, maritime and public safety organisations throughout the region from its offices in Brisbane, Melbourne, Sydney, and Perth.

For more information, please visit

Brigitte Gschiegl, Director Corporate Communications, Frequentis,, +43 1 81150-1301

Stefan Marin, Head of Investor Relations, Frequentis,, +43 1 81150-1074


Emitter: Frequentis AG
Innovationsstraße 1
1100 Wien
Contact Person: Stefan Marin
Phone: +431811501074
Stock Exchange(s): Vienna Stock Exchange (Official Trade)
Other Stock Exchanges: Regulierter Markt in Frankfurt