TSAT Telesat Corporation

Telesat (NASDAQ and TSX: TSAT), one of the world’s largest and most innovative satellite operators, and ThinKom Solutions, Inc., a leading designer and manufacturer of high performance satcom antennas, today announced an expanded development partnership to certify ThinKom’s ThinAir Ka2517 antenna for the Telesat Lightspeed Low Earth Orbit (LEO) satellite network.

The multi-year agreement calls for the organizations to cooperate on the integration and certification of the Ka2517 antenna with an airborne modem to enable communications across the Telesat Lightspeed Ka-band LEO network.

“ThinKom is keen to extend its position as the proven leader in airborne, multi-constellation, multi-orbit satellite terminal technology,” said Bill Milroy, ThinKom’s CTO and co-founder. “We bring exactly what it takes, in terms of spectral efficiency, scan volume, and rigorous regulatory compliance, in order to fully unlock the unique constellation characteristics and advantages of the Telesat Lightspeed network. We are indeed eager to see airlines and their passengers benefit from the addition of this high-throughput, low latency global network.”

Telesat estimates that its enterprise-class constellation, paired with the Ka2517 antenna, will deliver over 1 Gbps to the aircraft. Telesat Lightspeed can dynamically allocate multiple-Gbps of capacity to areas with high demand, such as congested airport hubs or busy flight routes. This level of connectivity enables robust gate-to-gate, real-time communications for a superior inflight connectivity experience.

ThinKom and Telesat have been formally cooperating on terminal development since the 2021 signing of a Memorandum of Understanding– which included validating the Ka2517’s ability to seamlessly switch between satellites across multiple orbital planes. With the Telesat Lightspeed satellite manufacturing program now underway, satellite launches are scheduled to begin in 2026, with Ka2517 certification expected to be finalized before global service availability scheduled to commence in 2027.

Over 800 ThinAir terminals will be deployed on commercial aircraft by the end of ‘24 with the capability to seamlessly add the Telesat Lightspeed network to their supported communications pathways. As the terminal of choice for the Airbus HBCplus Ka-band linefit program, ThinKom anticipates installation of the Ka2517 on up to one thousand more aircraft between now and activation of Telesat Lightspeed services. Additionally, ThinKom is pursuing direct linefit with Boeing, which will enable hundreds of additional Ka2517 installations.

“Airlines now have the ability to future-proof their inflight connectivity hardware investments when they select ThinKom’s proven, high-performance Ka2517 antenna,” stated Dave Wendling, Telesat’s Chief Technical Officer. “With a relatively simple modem kit installation, airlines will be able to seamlessly access or transition to Telesat Lightspeed connectivity for ubiquitous coverage and unsurpassed service.”

Media Contacts:

Greg OttoThinKom Solutions Inc.+1 310 802 4507

Jetway Communications for ThinKom SolutionsMaryann Simson+44 7821 1499797

W2 Communications for TelesatTelesat@w2comm.com

About ThinKom

ThinKom Solutions, Inc., is a leading provider of innovative, ultra-low-profile broadband antenna solutions for commercial and business aviation applications, delivering fast, resilient, and reliable connectivity “from every orbit to every seat.” The ThinAir® product line delivers compact, affordable Ku- and Ka-band options suitable for installation on planes ranging from business jets to super-jumbos. ThinAir antennas consume less power while delivering high spectral efficiency, reducing recurring satellite costs. Packaged in a low-drag design to save fuel and reduce emissions, ThinAir’s proven, proprietary, patented solutions are trusted by leading inflight connectivity providers and airline customers around the globe. Learn more about ThinKom at www.thinkom.com and connect with us on LinkedIn and Facebook.

About Telesat

Backed by a legacy of engineering excellence, reliability and industry-leading customer service, Telesat (NASDAQ and TSX: TSAT) is one of the largest and most innovative global satellite operators. Telesat works collaboratively with its customers to deliver critical connectivity solutions that tackle the world’s most complex communications challenges, providing powerful advantages that improve their operations and drive profitable growth.

Continuously innovating to meet the connectivity demands of the future, Telesat Lightspeed, the company’s Low Earth Orbit (LEO) satellite network, will be the first and only LEO network optimized to meet the rigorous requirements of telecom, government, maritime and aeronautical customers. Telesat Lightspeed will redefine global satellite connectivity with ubiquitous, affordable, high-capacity links with fibre-like speeds. For updates on Telesat, follow us @Telesat on X, LinkedIn, or visit www.telesat.com.

Forward-Looking Statements Safe Harbor

This news release contains statements that are not based on historical fact and are “forward-looking statements’’ within the meaning of the Private Securities Litigation Reform Act of 1995 and Canadian securities laws. When used herein, statements which are not historical in nature, or which contain the words “will,” “expected,” “can,” “scheduled,” “anticipates,” or similar expressions, are forward-looking statements. Actual results may differ materially from the expectations expressed or implied in the forward-looking statements as a result of known and unknown risks and uncertainties. All statements made in this press release are made only as of the date set forth at the beginning of this release. Telesat Corporation undertakes no obligation to update the information made in this release in the event facts or circumstances subsequently change after the date of this press release.

These forward-looking statements are based on Telesat Corporation’s current expectations and are subject to a number of risks, uncertainties and assumptions. These statements are not guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond Telesat Corporation’s control, are difficult to predict, and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements. There are numerous risks and uncertainties associated with Telesat’s business and the Telesat Lightspeed constellation. Known risks and uncertainties include but are not limited to: inflation and rising interest rates; Telesat’s ability to enter into definitive funding agreements with the company’s Canadian federal and provincial government partners, and to meet the funding conditions of those agreements and of its vendor financing; technological hurdles, including our and our contractors’ development and deployment of the new technologies required to complete the constellation in time to meet our schedule, or at all; the availability of services and components from our and our contractors’ supply chains; competition; risks associated with domestic and foreign government regulation, including access to sufficient orbital spectrum to be able to deliver services effectively and access to sufficient geographic markets in which to sell those services; Telesat’s ability to develop significant commercial and operational capabilities; risks associated with operating satellites and providing satellite services, including satellite construction or launch delays, launch failures, in-orbit failures or impaired satellite performance; and volatility in exchange rates. The foregoing list of important factors is not exhaustive. Investors should review the other risk factors discussed in Telesat Corporation’s annual report on Form 20-F for the year ended December 31, 2022, that was filed on March 29, 2023, with the United States Securities and Exchange Commission (“SEC”) and the Canadian securities regulatory authorities at the System for Electronic Document Analysis and Retrieval (“SEDAR”), and may be accessed on the SEC’s website at https://www.sec.gov/ and SEDAR’s website at https://www.sedarplus.ca/ as well as our subsequent reports on Form 6-K filed with the SEC and also available on SEDAR.