Rohde & Schwarz Australia and STS Defence team up for Hunter Class Frigate Program Rohde & Schwarz Australia has selected STS Defence to supply the critical communications masts that will enable the Royal Australian Navys new Hunter class frigates to communicate effectively across a range of frequency bands.
Rohde & Schwarz Australia selected STS Defence to supply the critical communications masts for the Royal Australian Navys new Hunter class frigates. (Image: BAE Systems)
Sydney, August 8, 2025 - Rohde & Schwarz Australia has awarded a contract to STS Defence to provide the twin integrated main configurable communications masts for the Royal Australian Navys first three Hunter class frigates being delivered under the Hunter Class Frigate Program (HCFP).
As a key partner in the HCFP program, Rohde & Schwarz Australia has selected STS Defence to supply the critical communications masts that, when integrated with NAVICS Multi-Level Security (MLS) systems, will enable the Royal Australian Navys new Hunter class frigates to communicate effectively across a range of frequency bands.
We are delighted to have STS Defence on board as a key supplier for the HCFP, said Gareth Evans, Managing Director of Rohde & Schwarz Australia. STS Defence's expertise in the design and manufacture of high-quality communications masts will be essential in ensuring the success of the Hunter program.
Ben Stancliffe, Managing Director of STS Defence, added: We are thrilled to be a part of this flagship program for STS Defence, which showcases our technology, design, and integration capabilities. We are immensely proud to be providing this mission-critical system to one of the most advanced warships in the world. Our team has worked closely with Rohde & Schwarz Australia to ensure that the communications masts meet the Royal Australian Navys requirements, and we look forward to delivering high-quality products that will support the success of the Hunter Class Frigate Program.
STS Defence is the Design Authority for the masts and has successfully completed scoping, risk reduction, and detailed design studies, leading to Lloyds Certification. The design is based on the main communications mast that STS Defence supplied for the UK Royal Navys Type 26 frigates.
We are confident that STS Defence will deliver high-quality communications masts that integrate with the ship and the NAVICS MLS system meet the Royal Australian Navys requirements, concluded Mr. Evans.
Note to editors:
The masts will be designed and manufactured by Mainstay Marine Solutions Ltd in Pembroke Dock, Pembrokeshire, and shipped to Adelaide, Australia, for installation on the Hunter class frigates at the Osborne Naval Shipyard.
The communications masts will support a range of antennas providing line of sight communications across a range of frequency bands, as well as Mast Head Steaming Navigation Lights. Special isolation screens, manufactured from composite materials, will provide isolation between the different frequency bands.
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Rohde & Schwarz Australia and STS Defence team up for Hunter Class Frigate Program Rohde & Schwarz Australia has selected STS Defence to supply the critical communications masts that will enable the Royal Australian Navys new Hunter class frigates to communicate effectively across a range of frequency bands. 
