Build a $20k Military-Grade Router for $106 Using a Raspberry Pi www.geeky-gadgets.com April 18, 2026, 10:02 a.m.
Extensive testing demonstrates that this system delivers impressive performance. With an 8 MHz channel width, it achieves data rates of up to 15 Mbps, supporting tasks such as video streaming and internet access. The network maintains functionality at ranges of up to 2,000 feet, making it suitable for both short- and long-range communication needs.
OpenMANET openmanet.net April 18, 2026, 9:43 a.m.
OpenMANET is an open-source project for building Raspberry Pi–based MANET radios on Wi-Fi HaLow (915 MHz) using Morse Micro chipsets. A MANET (Mobile Ad-Hoc Network) is a self-forming wireless mesh where each node connects directly without centralized infrastructure. This technology is especially useful in the civilian space for search and rescue, disaster response, airsoft events, and any disconnected communications scenario. Designed to be budget-friendly with excellent long-range performance. The build is designed to integrate with ATAK over multicast, but works equally well over standard IP and internet links.
Meshmerize Partners for Wireless Mesh Networking in Drone Swarms www.unmannedsystemstechnology.com April 18, 2026, 9:42 a.m.
Meshmerize, a specialist in software wireless Mobile Ad hoc NETwork (MANET), is collaborating with 8devices, an EU-based manufacturer of compact wireless modules and a Qualcomm Authorized Design Centre (ADC). The partnership will integrate Meshmerize’s advanced mesh networking technology with 8devices’ wireless modules to address the need for high-capacity, multi-hop communication in dynamic, high-density autonomous system environments.
Back to the Future: We Need to Save Voice... Again sebastianbarros.substack.com April 18, 2026, 8:55 a.m.
The industry has been on a 15-year treadmill to nowhere, and the numbers are brutal, with zero net growth. While we were busy burning billions trying to be “anything but a Telco”, buying aging media studios, chasing ad-tech pipe dreams, and praying for IoT pennies, we left our most lethal weapon out in the rain. Voice. We let it become a commoditized, free, unlimited background utility. Big mistake.We lost the first wave to Skype (a trillion-dollar topline crater). We lost the second to WhatsApp (a $386 billion scalp). Now, the Agentic Bypass is coming for the final $15 billion. Why? Because the biggest breakthrough in human history isn’t that AI can write a poem, it’s that it can finally hear, understand, and act on the human voice. The “software middleman” is dying. Natural language is the new OS, and the Telco owns the only trusted entry point left on the planet.
Does Amazon Leo Have Any Chance Against Starlink? sebastianbarros.substack.com April 16, 2026, 1:28 p.m.
By 2029, the LEO market will have officially split into two fundamentally different business models. SpaceX is doubling down on its role as the ultimate Global Telco Utility. With a network designed for massive, best-effort consumer volume, Starlink is focusing on the “unconnected” and the “unhappily connected.” Their success relies on a brute-force infrastructure play: high density, low latency, and a direct-to-consumer relationship that cuts out the middleman. They are effectively becoming the “water company” of the digital age, focused on delivering the most bits to the most people at the lowest cost.
Amazon’s $11B Globalstar Casino Gamble: Genius or Desperation? sebastianbarros.substack.com April 15, 2026, 5:07 p.m.
The genius of Bezos gamble and the controversy of it lies in Globalstar’s S-band spectrum (2.4 GHz). In the telecom world, spectrum is the “land” upon which digital cities are built. While Starlink relies on high-frequency Ku and Ka bands (perfect for high-speed home internet but terrible for penetrating walls or connecting to small antennas), the S-band is the “Goldilocks” frequency. It is globally harmonized, meaning a device using it can work in London just as easily as in Tokyo without changing hardware. More importantly, it is the precise frequency needed for Direct-to-Device (D2D) connectivity.
The US Supply Chain Shakeup After Tariffs, in Five Charts  www.library.hbs.edu April 14, 2026, 1:12 p.m.
Last year’s US-imposed tariffs sped up significant trade shifts—toward Mexico and away from China—that began years earlier and have diversified American imports among top partners.While the Trump administration’s major tariff announcement on April 2, 2025, was billed as “Liberation Day,” research by Harvard Business School’s Laura Alfaro suggests that companies were already positioned to adjust to the levies. The recalibration of supply chains has been so profound that US imports from China have returned to near-2001 levels, when the country entered the World Trade Organization.
Lidl Retail MVNO: A 50 Million Subscribers play? sebastianbarros.substack.com April 14, 2026, 1:06 p.m.
A few weeks ago, I wrote about Walmart becoming the world's largest MVNO. Now, one of the largest pan-European retailers is making a massive regional play to become a telco as well. Schwarz Group, the parent company of Lidl, recently invested $80 million to take a near10 % stake in the eSIM platform 1Global, with plans to scale its Lidl Connect MVNO across 30 markets and more than 150 million unique visitors to its stores.The initial reaction is to view this as a repeat of the 2010s, when supermarkets launched low-margin MVNOs to compete on price. This is a fundamental misreading of modern retail economics. Retailers like Lidl could not care less about running a profitable standalone telecommunications operation. They are using wholesale connectivity as a behavioral lever to drive their core business, boosting physical-store footfall, deepening loyalty ecosystems, and opening new digital distribution channels. Connectivity is no longer a product to be sold but a programmable incentive to capture high-frequency consumer behavior.
10 cases for 5G Uplink monetization sebastianbarros.substack.com April 13, 2026, 4:20 p.m.
For years, our networks were crippled on the uplink by design. We were trapped in Non-Standalone purgatory. In NSA, no matter how wide your 5G mid-band channel was, your control plane and your uplink were essentially anchored to the legacy LTE leg. We were trying to push next-gen, machine-heavy use cases through a legacy straw, forever shackled to an archaic 10:1 Downlink-to-Uplink design philosophy. We were uplink-starved by default, constantly fighting physics just to keep a decent connection alive at the cell edge. 5G SA finally cuts the LTE anchor.By removing that crutch, we unlock the actual plumbing required to do interesting things. We are talking about true Uplink Carrier Aggregation. We are talking about dynamic Tx switching that allows a device to seamlessly flip its transmission power between a capacity-heavy TDD mid-band and a coverage-heavy FDD low-band in milliseconds. Add in Supplementary Uplink, and suddenly you aren’t just dropping packets the second a device moves indoors or hits the cell edge.For the first time, we actually have the fat, dedicated pipes necessary to shift from a human-centric network to a machine-centric one. We now have the architectural bandwidth to support a reality in which devices aren’t just passively consuming data but are aggressively pushing high-fidelity, real-time context to the network.
Is 6G ISAC Dead on Arrival? sebastianbarros.substack.com April 12, 2026, 3:44 p.m.
6G is still searching for a reason to exist. Stuck by this 15-year-old obsession with finding a “killer app,” the telecom industry has decided its next great revolution is Integrated Sensing and Communication (ISAC), or essentially turning cell sites into radars. Frankly, pitching this as a breakthrough is a bit stupid. Radar is a 120-year-old, highly mature technology already operating perfectly in the 8 to 81 GHz bands using FMCW. Telcos suddenly “discovering” that radio waves bounce off objects, ignore a century of established science.Predictably, the ecosystem is now rushing out whitepapers on drone detection, conveniently ignoring the brutal technical reality. To achieve high-detail sensing, you must use mmWave frequencies in heavily densified grids, a spectrum we already know is a commercial failure, largely relegated to sports stadiums. The proposition that operators will densify networks solely to sell a use case already mastered by the advanced defense industry, in the hope of moving the needle in a $1.3 trillion global market, is mathematically absurd.
Are We Overproducing AI Tokens? sebastianbarros.substack.com April 10, 2026, 10:45 a.m.
Every infrastructure wave starts the same way. Railroads, electricity, fiber, mobile. Massive capital, aggressive build, everyone racing to lay the foundation before demand fully exists. AI is following the same pattern, but at a different order of magnitude. One-gigawatt data centers are being deployed at the scale of small cities. Hundreds of billions are flowing into compute, models, and energy. Telcos are now looking at the last mile of this system, positioning themselves as distributors of intelligence, not just connectivity. But what happens if supply runs ahead of demand?Inference costs are already collapsing. Token prices are compressing before the market has fully formed. Enterprise adoption is real, and consumer usage is exploding, but the slope of demand remains uncertain relative to the scale of supply coming online. Telcos face a narrow window: Enter too late, and the value is gone. Enter too early, and they risk building into oversupply. The only way through is to understand whether this is the next infrastructure boom or the next overbuild cycle.
AI on Edge: Are you believer? sebastianbarros.substack.com April 9, 2026, 8:15 a.m.
The network edge is suddenly a very valuable real estate in the digital economy. And right on cue, the telecom industry has fractured into a bitter, trillion-dollar civil war over what the “edge” actually means, where it lives, and who will pay for it.On one side of the battlefield, we have the “Believers.” Fueled by the relentless ambition of silicon giant Nvidia and championed by operators like T-Mobile and SoftBank, this camp views the base of every cell tower as a potential goldmine. They are pushing “AI-RAN”, a controversial architecture that seeks to drop heavy-duty GPUs at the absolute far edge of the network to handle wireless processing and enterprise AI simultaneously.On the other side stand the “Doubters.” Led companies such as AT&T and Verizon, and was quietly supported by vendors like Ericsson. This camp views the far edge (understood as Radio) as an economically ruinous CapEx trap. Grounded in the laws of thermodynamics, silicon efficiency, and optical physics, they argue that throwing expensive hardware at a cell site and praying for enterprise customers to materialize is commercial suicide.
The Telecom Brandolini Law sebastianbarros.substack.com April 7, 2026, 1:15 p.m.
Brandolini’s Law says that the amount of energy required to refute bullshit is orders of magnitude higher than the energy required to produce it.Take WeWork. It took Adam Neumann minutes to drop “community-adjusted EBITDA” into a pitch deck and claim a commercial subleasing operation was a global tech platform. It took an aborted IPO, armies of Wall Street analysts, and billions in destroyed US dollars to systematically prove they were just renting out desks. The fiction was cheap. The reality check was incredibly expensive.Telecom operates entirely on this dynamic. We spend way too much time and capital proving bullshit wrong. Every investment cycle introduces a frictionless new narrative, 5G enterprise monetization, edge computing, AI RAN, that instantly absorbs attention, R&D, and capex. Organizations align their entire strategy around ideas that rarely translate into actual yield. Meanwhile, the financial fundamentals barely move. Top-line revenue remains flat, and value continues shifting to players above the network.The real cost here is not just being wrong on a technology cycle. It is the massive opportunity cost of everything the industry fails to build while chasing narratives that were never economically solid to begin with.
The G Model Is Obsolete sebastianbarros.substack.com April 6, 2026, 10:49 a.m.
I was reading an interview with Yigal Elbaz, and he said something that by now is an open secret: “We need to completely decouple the ‘Gs’ or the cycle of the ‘Gs’ from our ability to innovate.”He’s calling for continuous innovation and progress instead of these arbitrary ten-year blocks. No hard feelings with Gs, but just the reality of running a modern network. If you’re actually in the trenches of telecom operations today, you already know the old model is broken. Not long ago, I was working with a Tier One vendor on a RAN software upgrade plan. Ten years back, a nationwide upgrade was a massive, high-stakes event you’d do once a year if you were feeling brave, and everyone was nervous. Today, you can push software to 20,000 radio sites in a matter of days. We’re talking staged rollouts, automated health checks, and rollback logic if something breaks, all running like a standard cloud pipeline. It’s an IT stack now. The network and all the surrounding technology are evolving every week, but the industry is still trying to talk in decade-long cycles. That gap is getting impossible to justify.
How to prepare for the Telecom Drought? sebastianbarros.substack.com April 4, 2026, 4:39 p.m.
The wireless telecom vendor machine is built to binge and starve. For 30 years, the industry has run on a ruthless, predictable cycle: a new ‘G’ drops, triggering a three- to four-year capex bender that washes over $1 trillion across the global supply chain. Because building networks is mostly an exercise in hanging heavy iron on towers, the Radio Access Network eats 80% of that cash. Once nationwide coverage hits, the hangover begins. Capital intensity plummets, capex compresses by up to 40%, and the industry enters a brutal 5 to 7 year drought.Right on schedule, the 5G money hose has been shut off, and Vendors are running their standard survival playbook, slashing headcount, defending margins, and waiting for the 6G rain to save them.
The RAN Semiconductor War: Ericsson vs Intel vs NVIDIA vs The Rest sebastianbarros.substack.com April 3, 2026, 4:35 p.m.
There is a brutal, silent war happening at the atomic level of the Telco´s network, and it is not about 5G speeds or 6G hype cycles.It is a battle for the “math layer” or the specific silicon architecture that converts radio waves into money. While the global Radio Access Network is a $35 billion market, it acts as the high-stakes “butterfly effect” for a $1.3 trillion industry. A single decision made today about a DU chipset could dictate the power consumption of entire nations and decide whether the future of telecom is a specialized machine, a cloud workload, or a distributed NVIDIA-powered AI factory.For decades, this war was latent, tucked away in the proprietary “black boxes” of a few Scandinavian and Chinese giants. But the arrival of NVIDIA reframing the base station as a micro-AI factory, Intel’s gravity-well grip on virtualized RAN, and the ideological chaos of Open RAN have finally rocked the boat.
SpaceX IPO at $1.75 Trillion... Can It Be Justified? sebastianbarros.substack.com April 2, 2026, 5:43 p.m.
There is a concept in astrophysics known as the Roche limit, the invisible boundary at which the gravitational pull of a massive body becomes so strong that it shatters any smaller object that dares to get too close. The global financial markets are about to test their own. With SpaceX reportedly eyeing an IPO targeting a staggering $1.75 trillion enterprise valuation, the sheer gravitational pull of this offering threatens to warp the broader market.To justify this number, investors are being asked to underwrite a sovereign space state. The global space economy is forecast to reach $1.8 trillion by 2035. By demanding a $1.75 trillion valuation today, Elon Musk is effectively claiming that Starlink will consume 97% of the entire industry’s future value. He is not pitching a market leader but telling Wall Street that Starlink is the market, and everyone else will simply pay rent.
AT&T One Step Closer to Ambient Connectivity sebastianbarros.substack.com April 1, 2026, 4:31 p.m.
Nerds like me are obsessed with RAN, FWA, WiFi, copper, fiber, and satellite. But the 99% of People who live normal, happier lives just want to be connected all the time. That is it.They could not care less if it is WiFi, 5G FWA, or a satellite over their heads, as long as their laptop, phone, TV, washing machine, and whatever comes next just works.I call this ambient connectivity. Historically, telecom has been built in the opposite direction for decades, with silos everywhere. Bring a cellular engineer and a WiFi guy into a bar, and you will understand in five minutes. That is why this new AT&T plan is relevant. They just made a real step in that direction with this new plan. But there is a lot more to build before this becomes a true ambient connectivity experience.
Anyway, What Does AI-RAN Even Mean? sebastianbarros.substack.com March 31, 2026, 3:03 p.m.
Despite the crazy hype, there is no definition for AI-RAN. Today it is at best a vibe, a dangerous reality for an industry that moves on strict standards that are currently completely absent.
Starlink Is Taking Revenues Telcos Couldn’t Capture sebastianbarros.substack.com March 29, 2026, 2 p.m.
Telcos still frame Starlink as a niche solution for rural broadband, aviation, or maritime. That idea breaks the moment you look at the market potential.In fact, the demand has always been there, but the challenge has been the Telco's cost structure. Extending fiber into low-density areas costs $3,000 to $10,000 per home passed, and often exceeds $20,000 in remote terrain, while monthly home broadband revenue in those same areas is $40 to $80 at best. The return profile does not close, so the investment never scaled beyond minimum coverage.