A British startup is hoping to strap 5G antennas to liquid-hydrogen-powered high-altitude pseudo-satellites in the hope of replacing mobile base stations on the ground.
Stratospheric Platforms made a test flight over Germany last Monday (19 October) using a Grob 520 high-altitude "optionally manned" aircraft, and the firm is said to be looking at developing its own hydrogen-powered high-altitude pseudo-satellite (HAPS) for flinging 5G connectivity into the world's skies.
The trial 45,000ft over Bavaria reportedly saw a single 4G LTE smartphone enjoy "download speeds of 70Mbps and upload speeds of 23Mbps over a 10MHz bandwidth".
Deutsche Telekom (DT), an investor in Stratospheric Platforms, praised the trial. Bruno Jacobfeuerborn, chief exec of DT's mobile mast subsidiary, said in a canned statement: "We are thrilled to be working with Stratospheric Platforms to realise our vision of ..
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