Altair Semiconductor is integrating Iridium’s standards-based satellite service directly into its ALT1350 and next-generation ALT1550 cellular IoT chipsets, creating a path for connected devices to move beyond terrestrial coverage without adding a separate satellite modem.
In an October 14 announcement, Iridium said both chip families are being updated to support Iridium NTN Direct, its 3GPP-based non-terrestrial network service. The idea is simple but technically important: one chipset can handle conventional cellular IoT links on the ground and fall back to a low-Earth-orbit satellite network when towers disappear.
The ALT1350 is aimed at low-power LTE-M and NB-IoT applications such as logistics trackers, utility meters, agricultural sensors, vehicle telematics and industrial monitoring. Those devices often sit in exactly the places where ordinary cellular coverage becomes unreliable: remote fields, mines, offshore routes, mountain roads and isolated infrastructure sites. Adding Iridium support at the chipset level could simplify the hardware needed to keep those systems connected.
The ALT1550 pushes the same idea further. Altair says the chip targets 5G eRedCap devices, including smart glasses, AI assistants and other wearables that need more capability than narrowband sensors but lower power and complexity than a full 5G smartphone modem. Satellite fallback in that class of device could make always-available messaging, telemetry and location services much easier to design.
This is not the same thing as turning every IoT device into a broadband satellite terminal. Iridium NTN Direct is focused first on NB-IoT and direct-to-device services where low data rates, long battery life and geographic reach matter more than high throughput. Iridium CEO Matt Desch has emphasized that the company sees narrowband IoT as an earlier and clearer opportunity than high-bandwidth smartphone service.
The standards angle matters because satellite connectivity has historically required proprietary radios, dedicated modules and separate service stacks. 3GPP NTN work is gradually pulling satellite access into the same ecosystem used by cellular vendors. That makes it easier for modem makers, carriers and device manufacturers to build terrestrial and non-terrestrial coverage into one product roadmap instead of treating satellite as a completely separate system.
BitcoinVersus.Tech has been tracking that convergence from several directions. Qualcomm recently combined 5G Advanced, satellite and Wi-Fi 8 in one fixed-wireless platform, open-source cellular work is moving 5G infrastructure toward satellite support, and new spectrum strategies could eventually make satellite-connected mobile devices work in harder indoor environments.
The bigger shift is architectural. Instead of designing a “cellular device” and then bolting on satellite hardware later, manufacturers are beginning to treat terrestrial and space networks as two parts of the same connectivity stack. For remote IoT, that can reduce board space, component count, power draw and integration complexity. For mobile operators, it also creates a cleaner path to roaming between towers and satellites.
Why it matters: the most important part of Altair’s announcement is not raw speed. It is integration. If satellite fallback becomes a normal feature inside mainstream low-power cellular chipsets, global connectivity stops being a specialist add-on and starts becoming a standard option in everyday connected hardware.
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