Inmarsat Government Delivers Communications Support for Successful Expedition to Antarctica

Inmarsat Government, a provider of secure, global, mission-critical telecommunications to the US Government, has announced that it has successfully provided mobile communications support to the South Orkney Expedition, the company said.

This multidisciplinary expedition, supported by the research vessel RV Braveheart, took place on Signy Island from February 21 to March 6, 2020. The South Orkney Islands are located in the Southern Ocean, about 375 miles north-east of the Antarctic Peninsula.

This expedition was undertaken by the Perseverance DX Group, a nonprofit expedition organization that conducted record-setting, multi-mode high frequency (HF) communications using amateur radio frequencies, ranging from just above the Amplitude Modulated (AM) broadcast band to the edge of the very high frequency (VHF) band, under widely varying space weather (ionospheric and solar flux) conditions. The team also collected marine sediment samples for scientific research.

Additionally, middle and high school science teachers were provided information for use in their classrooms on a number of Science, Technology, Engineering and Mathematics (STEM) topics. The expedition team also tested satellite communications and new amateur radio technologies in this remote region of the world.

The US government has relied on and trusted Inmarsat satellite services since 1979. Inmarsat Government continues to deliver the world´s most advanced global, mobile satellite communication services to US defense, intelligence, homeland security, public safety and civilian agencies, with highly reliable, secure and affordable connectivity. For more information, visit

Inmarsat is a pioneering technology company and the world provider of global, mobile satellite communications. It owns and operates the world´s most diverse global portfolio of mobile telecommunications satellite networks, and holds a multi-layered, global spectrum portfolio, covering L-band, Ka-band and S-band, enabling unparalleled breadth and diversity in the solutions it provides. Inmarsat´s long-established global distribution network includes not only the world´s channel partners but also its own strong direct retail capabilities, enabling end to end customer service assurance.