Chinese automobile conglomerate Geely has made significant strides since I last wrote about their Geesat LEO constellation for mobile vehicle connectivity. They launched the first nine satellites in June 2022 and a second batch of eleven satellites in February 2024. The mass of the first nine satellites was 100 kg, and the mass of the second eleven was 130 kg, so they are not identical. more
I'm such an industry nerd that I sometimes read customer reviews of large ISPs just to see how the public perceives them. Most ISPs have more negative reviews than positive ones, and that's to be expected since people are more likely to complain when things go wrong than give praise when things are working as promised. more
China’s plans for low-Earth orbit Internet service constellations began with two projects, Hongyun (156 satellites) and Hongyan (864 satellites). These were eventually sidelined for Guowang, an ambitious, 12,992 satellite constellation that is expected to begin launching satellites this year. But, that is old news. China’s five-year plan designates satellite Internet as a strategic emerging industry and two new constellations have emerged, G60 (12,000 satellites) and Honghu–3 (10,000 satellites). more
AT&T and satellite company AST SpaceMobile announced a partnership to provide satellite cellular service directly from satellites to cellphones. This will provide a service that is much needed for the billions of remote users who are not in the range of a cell tower. This is an emerging industry that is still being referred to by different acronyms. more
Many readers will have seen recent news that the aurora borealis, or northern lights, were visible deep into the South for several days. This phenomenon is caused by a geomagnetic storm that is caused by strong solar flares. Solar flares can cause problems on Earth by emitting clouds of magnetized particles and hot plasma. more
Digital communications systems always represent a collection of design trade-offs. Maximizing one characteristic of a system may impair others, and various communications services may choose to optimize different performance parameters based on the intersection of these design decisions with the physical characteristics of the communications medium. more
I recently used Starlink on a cruise along the coast of Northwest Africa, and I'll summarize my experience below, but first let me explain why I put some in the title of this post. I posted the following request on the Reddit Cruise group: "What has been your experience of Starlink Internet service on Seabourn or other cruise lines? How was latency? Do video chats work smoothly? Games? etc." more
It's incredibly hard to keep things private in the new digital age. There are far too many stories circulating about people who talked to a friend on the phone or texted about something and almost instantly got hit with ads for the subject of the conversation. And that happens without malware - no telling what information you're giving out if your devices have been infected with malicious software that is spying on you. more
I've read several articles coming out of the Mobile World Congress trade show in Barcelona, Spain, and one of the common threads is that there was a lot of talk about 5.5G (or 5G Advanced) - the next iteration of 5G. My first question on reading about this was to ask what new features are being discussed that were not part of the original announced promises of 5G. I went back and read a few of my blogs and other articles that were written when 5G was first announced. more
In his January 12 SpaceX update, Elon Musk said the biggest goal for Starlink from a technical standpoint is to get the mean latency below 20 ms. He expanded by saying that given the speed of light, 8 ms is the absolute minimum latency for a satellite at 550 km. He believes they can optimize terrestrial and inter-satellite links, and minimize queueing delays and dropped packets, to recude the the rest of the time to below 10 ms. more
As was the case in the US during World War II, civilian volunteers are making important contributions to the Ukrainian war effort. On February 8, 2022, the first truckload of Starlink terminals arrived in Kyiv. A week later they were being used. By April 2022, there were 5,000 terminals in Ukraine, and 42,000 as of April 2023. (At this point, SpaceX and Ukraine have gone silent. Neither ChatGPT4, Gemini, Copilot, Perplexity, nor I could not find a current terminal count). more
Satellites make it possible for governments to provide essential services, such as national defense, navigation, and weather forecasting. Private ventures use satellites to offer highly desired services that include video program distribution, telecommunications, and Internet access. The Russian launch of a satellite, with nuclear power and the likely ability to disable satellites, underscores how satellites are quite vulnerable to both natural and manmade ruin. more
In the February 13th edition of the Wall Street Journal, Professor Thomas W. Hazlett offers a breathless endorsement of market concentration with the T-Mobile acquisition of Sprint, his go-to example. Apparently, mergers and acquisitions benefit consumers because they enhance competition and generate all sorts of positive outcomes that could not possibly have occurred but for the reduction in the number of industry players. more
I work with a lot of ISPs that own rural fiber. Some rural network owners have been successful in providing fiber to cell sites near their networks over the last decade. A few sell directly to a cellular carrier, but most of these connections are sold to an intermediate carrier that bundles together cellular connections across a large geographic area. more
In 2019, I wrote that Amazon would be a formidable satellite-ISP competitor. I still think so, but I didn't expect it would be over four years until they launched the first test satellites. In the meantime, SpaceX has put over 5,000 satellites in orbit and has over two million Starlink customers. Amazon has permission to launch 3,236 satellites. more