Digital audio broadcasting (DAB+) and internet radio have largely replaced traditional FM radio in Switzerland, with digital radio holding an 81% share of use in spring 2023. Due to the high costs of maintaining FM transmitters and declining financial resources, Switzerland plans to fully transition to digital radio by the end of 2026, phasing out FM broadcasting completely. From a report: DAB+ and the internet offer better quality and a larger program selection, are more energy and cost efficient, and can provide additional information in text and images, it said. To receive DAB+ requires a corresponding device or adapter, and new cars have been equipped with digital technology as standard for several years. In addition, the Federal Roads Office (FEDRO) will upgrade all tunnels on the national road network for digital radio reception by the end of the year and switch off FM transmitters.

FM was originally expected to be switched off throughout Switzerland by the end of 2024. The government extended FM licenses for the radio industry for the last time in October 2023 to the end of 2026, after which radio stations in Switzerland will no longer be able to broadcast via FM, only digitally. OFCOM announced at the time that the final extension would give the radio industry the flexibility to complete the transition process from analogue to digital radio.

Apple has quietly added a Thread radio to nearly all of its newest iPads, MacBooks, and iMacs. The Verge reports: While the company doesn't list Thread on the specs of any of these products, FCC reports indicate that many of Apple's latest devices have had Thread radios tested for compliance. Generally, you don't test a radio that's not there. We found evidence of Thread testing in the following models: iPad Pro 13-inch (M4) (Wi-Fi + Cellular), iPad Pro 11-inch (M4) (Wi-Fi + Cellular), iPad Pro 11-inch (M4) (Wi-Fi), iPad Air 11-inch (M2) (Wi-Fi + Cellular), iPad Air 13-inch (M2) Wi-Fi, MacBook Air 15-inch (M3), MacBook Pro 14-inch (M3), MacBook Pro 14-inch (M3 Pro or M3 Max), MacBook Pro 16-inch (M3 Pro or M3 Max), iMac (M3, two ports), and iMac (M3, four ports).

The FCC requires manufacturers to list every radio contained in a device and to test them in every possible scenario to make sure they comply with its transmission regulations. Tom Sciorilli, director of certification for Thread Group, told The Verge that the FCC reports reference FCC 15.247, "which confirms the device will essentially 'stay in its lane' and not interfere with other radios when operating." The reports we found are tests of the IEEE 802.15.4 transmitter functionality -- 802.15.4 is the radio standard Thread runs on. While it supports a number of technologies, the reports mention Thread explicitly.

Thread is the primary wireless protocol for the new smart home standard Matter, which Apple helped develop and that is now the underlying architecture for its Apple Home smart home platform. A low-power, low-bandwidth, mesh networking protocol specifically designed for IoT devices, Thread is shown to be faster than Bluetooth and offers better range, making it ideal for connecting products like smart lights, locks, thermostats, and sensors. [...] So why is it there? The Apple Home app runs on Macs and iPads, and Thread radios could allow them to communicate directly with smart home devices and act as Thread border routers. It's possible Apple is planning to turn your Mac or iPad into a home hub, but iPads used to be home hubs, and the company discontinued that capability for its new Apple Home architecture. Those iPads didn't have Thread radios, though.

An anonymous reader quotes a report from Ars Technica: A controversial bill that would require all new cars to be fitted with AM radios looks set to become a law in the near future. Yesterday, Senator Edward Markey (D-Mass) revealed that the "AM Radio for Every Vehicle Act" now has the support of 60 US Senators, as well as 246 co-sponsors in the House of Representatives, making its passage an almost sure thing. Should that happen, the National Highway Traffic Safety Administration would be required to ensure that all new cars sold in the US had AM radios at no extra cost. "Democrats and Republicans are tuning in to the millions of listeners, thousands of broadcasters, and countless emergency management officials who depend on AM radio in their vehicles. AM radio is a lifeline for people in every corner of the United States to get news, sports, and local updates in times of emergencies. Our commonsense bill makes sure this fundamental, essential tool doesn't get lost on the dial. With a filibuster-proof supermajority in the Senate, Congress should quickly take it up and pass it," said Sen. Markey and his co-sponsor Sen. Ted Cruz (R-Texas).

About 82 million people still listen to AM radio, according to the National Association of Broadcasters, which as you can imagine was rather pleased with the congressional support for its industry. "Broadcasters are grateful for the overwhelming bipartisan support for the AM Radio for Every Vehicle Act in both chambers of Congress," said NAB president and CEO Curtis LeGeyt. "This majority endorsement reaffirms lawmakers' recognition of the essential service AM radio provides to the American people, particularly in emergency situations. NAB thanks the 307 members of Congress who are reinforcing the importance of maintaining universal access to this crucial public communications medium." "Requiring the installation of analog AM radios in automobiles is an unnecessary action that would impact EV range, efficiency and affordability at a critical moment of accelerating adoption," said Albert Gore, executive director of ZETA, a clean vehicle advocacy group that opposes the AM radio requirement. "Mandating AM radio would do little to expand drivers' ability to receive emergency alerts. At a time when we are more connected than ever, we encourage Congress to allow manufacturers to innovate and produce designs that meet consumer preference, rather than pushing a specific communications technology," Gore said in a statement.

Jason Rainbow reports via SpaceNews: SpaceX has secured conditional approval to use extremely high-frequency E-band radio waves to improve the capacity of its low Earth orbit Starlink broadband constellation. The Federal Communications Commission said March 8 it is allowing SpaceX to use E-band frequencies between second-generation Starlink satellites and gateways on the ground, alongside already approved spectrum in the Ka and Ku bands. Specifically, SpaceX is now also permitted to communicate between 71 and 76 gigahertz from space to Earth, and 81-86 GHz Earth-to-space, using the up to 7,500 Gen2 satellites SpaceX is allowed to deploy.

SpaceX has plans for 30,000 Gen2 satellites, on top of the 4,400 Gen1 satellites already authorized by the FCC. However, the FCC deferred action in December 2022 on whether to allow SpaceX to deploy the other three-quarters of its Gen2 constellation, which includes spacecraft closer to Earth to improve broadband speeds. The regulator also deferred action at the time on SpaceX's plans to use E-band frequencies, citing a need to first establish ground rules for using them in space. In a March 8 regulatory filing, the FCC said it found "SpaceX's proposed operations in the E-band present no new or increased frequency conflicts with other satellite operations." But the order comes with multiple conditions, including potentially forcing SpaceX to modify operations if another satellite operator also seeks to use the radio waves.

A group of radio enthusiasts known as the "radio squirrels" are keeping the legacy of Morse code alive at KPH Maritime Radio, the last operational Morse code radio station in North America. Located in Point Reyes National Seashore, north of San Francisco, the station transmits maritime news and weather reports every Saturday, using vintage equipment dating back to World War II, reads a fast-paced story on The Atlantic. Despite the obsolescence of Morse code, the radio squirrels, along with a 17-year-old newcomer, are determined to preserve this unique form of communication.

A radio station in Alabama has been forced to temporarily shut down after thieves stole a 200ft radio tower. The Guardian reports: WJLX, a station in Jasper, Alabama, was ordered to go off air by the Federal Communications Commission (FCC) after thieves took the station's AM tower last week, the Guardian first learned. "In all my years of being in the business, around the business, everything like that, I have never seen anything like this," WJLX's general manager, Brett Elmore, told the Guardian. "You don't hear of a 200ft tower being stolen," he added.

Elmore said the theft was first discovered last week by a landscaping crew that regularly manages the area nearby the tower, WBRC reported. "They called me and said the tower was gone. And I said, 'What do you mean, the tower is gone?'" Elmore said. The radio tower was previously located in a wooded area, behind a local poultry plant. Elmore said that thieves had cut the tower's wires and somehow removed it. Thieves also stole the station's AM transmitter from a nearby building.

For the small radio station, the theft has had a significant impact. Elmore said the station's property was not insured. Replacing the tower could cost the station anywhere between $100,000 to $150,000, which is "more money than we have," Elmore said. The FCC also notified WJLX on Thursday morning that the station would have to go off the air because of the theft. While WJLX still has its FM transmitter and tower, it is not allowed to operate its FM transmitter while the AM station is off the air. "I had a guy from Virginia call yesterday and say, 'You know, I think a helicopter grabbed [the tower],'" Elmore said. He's hoping that surveillance video from the nearby poultry plant or witnesses nearby can help figure out who stole the station's tower.

An anonymous reader quotes a report from Phys.Org: A NASA telescope has captured the biggest solar flare in years, which temporarily knocked out radio communication on Earth. The sun spit out the huge flare on Thursday, resulting in two hours of radio interference in parts of the U.S. and other sunlit parts of the world. Scientists said it was the biggest flare since 2017. Multiple pilots reported communication disruptions, with the impact felt across the country, said the government's Space Weather Prediction Center.

Scientists are now monitoring this sunspot region and analyzing for a possible outburst of plasma from the sun, also known as a coronal mass ejection, directed at Earth. The eruption occurred in the far northwest section of the sun, according to the center. NASA's Solar Dynamics Observatory caught the action in extreme ultraviolet light, recording the powerful surge of energy as a huge, bright flash. Launched in 2010, the spacecraft is in an extremely high orbit around Earth, where it constantly monitors the sun. The sun is nearing the peak of its 11-year or so solar cycle. Maximum sunspot activity is predicted for 2025.

Long-time Slashdot reader sandbagger shares a report from the Canadian Broadcasting Corporation (CBC): CBC and Radio-Canada have announced they'll no longer carry the National Research Council (NRC) time signal. Monday marked the last time it was broadcast, ending the longest running segment on CBC Radio. In a statement, spokesperson Emma Iannetta described the signal as a "wonderful partnership," but confirmed it's being dropped. Given the range of CBC platforms from traditional over-the-air radio, to satellite and the internet, the long dash undergoes a range of delays by the time it's heard, leading to accuracy concerns from the NRC, she wrote. Iannetta added that nowadays most people use their phones to get the time, though many CBC listeners have a "fondness" for the signal.

For many, the relationship with the time signal goes far beyond fondness. It's allowed sailors to set their instruments for navigation, kept railway companies running on time and helped Canadians stay punctual. In a 2019 interview with Day 6 on the occasion of the signal's 80th birthday, Laurence Wall, one of its current voices, reflected on its origin and importance. His memories include taxi drivers recognizing his voice from daily announcements and hearing from a young man living in Hong Kong who would stay up past midnight just to hear the time signal because it reminded him of home. Beyond emotional connections, the signal has a practical history too. Wall said when it started out, timekeeping was relatively primitive, with watches and clocks that needed to be regularly set in order to stay accurate.

On Tuesday, Apple unveiled the iPhone 15 Pro and Pro Max featuring USB-C ports, titanium bodies, and Action Buttons. They're also the first smartphones to support the open-source smart home protocol Thread. The Verge's Jennifer Pattison Tuohy explains how Apple might deploy this wireless connectivity protocol in its ecosystem: The obvious use for Thread in the iPhone is as a Thread border router for the slew of new Apple Home and Matter-enabled Thread smart home devices from companies like Eve, Nanoleaf, and Belkin WeMo. This would mean you wouldn't have to have a HomePod Mini, Apple TV 4K, or other Thread border router to use Thread smart home gadgets with your iPhone. ... [Jonathan Hui, VP of technology at the Thread Group and a software engineer at Google] says that Thread connectivity in a smartphone will allow it to communicate directly with a Thread device. "Compared to existing smartphones without Thread, a smartphone with Thread can communicate directly with a Thread device, without relying on a separate Thread border router or any other communication technology," he said.

Another possibility with direct control is some type of trigger or presence detection. Your Thread devices could know you're home as soon as you walk into the house and respond appropriately. However, presence detection -- something the smart home sorely needs -- would be easier to do with the UWB chips already in most iPhones and HomePods (and is already being done to some extent). As an IP-based mesh protocol, Thread could be a more reliable way to connect multiple such devices to your phone while also having multiple "parent" devices within the same home (such as your iPad, MacBook, or other family member's iPhones). Its IP characteristic makes it easier to maintain a persistent data connection directly to the device, says Moneta. Additionally, Thread being mesh means your device doesn't have to be in range of the controller (iPhone/iPad etc.), as it would with Bluetooth. This could apply to Apple accessories such as the Apple Watch and third-party devices that use Bluetooth, like camera accessories and medical devices. Of course, all of those would need a Thread radio in, too, so that's not going to happen anytime soon. [...]

A popular theory in my X (formerly Twitter) feed after the Apple event was that Thread is in the iPhone 15 Pro line more or less as a freebie. It's plausible that the Wi-Fi / Bluetooth chip Apple is using in its highest-end phones comes as a sort of three-for-one: you pay for Wi-Fi and Bluetooth, and you get your Thread for free! Given that Apple itself doesn't seem to have a clear idea or any concrete examples of what the Thread capabilities will add (beyond a vague "opening up future opportunities for Home app integrations" statement in the iPhone 15 press release), this does seem to be the most likely reason -- for now. Although, Apple rarely does anything without some purpose in mind.

An anonymous reader quotes a report from Reuters: The U.S. Senate Commerce Committee approved legislation on Thursday to bar automakers from eliminating AM broadcast radio in new vehicles and require companies like Ticketmaster to put total ticket prices including fees in marketing materials. The AM radio bill and the ticket-pricing bill both had strong bipartisan support and both have companion measures in the House of Representatives. The AM radio bill would direct the Transportation Department to issue regulations mandating AM radio in new vehicles without additional charge. Senators said this year that at least seven automakers have removed AM broadcast radio from their electric vehicles, including Tesla, BMW, and Volkswagen. Ford reversed course in May under pressure from Congress. Lawmakers say losing AM radio undermines a federal system for delivering key public safety information to the public. The National Association of Broadcasters said the bill "will ensure that the tens of millions of AM radio listeners across the country retain access to local news, diverse community programming and emergency information." The Alliance for Automotive Innovation, a trade group representing major automakers, opposed the measure: "This is simply a bill to prop up and give preference to a particular technology that's now competing with other communications options and adapting to changing listenership."

The U.S. Senate Commerce Committee also approved two bills aimed at tightening privacy protections for children online.

Ford is reversing course on AM radio. From a report: In a tweet today, CEO Jim Farley announced the company was backing off its decision to release new vehicles without AM radio broadcast capabilities. Instead, all 2024 Ford and Lincoln models will be able to tune in to AM radio. And for the two electric vehicles released without AM radio capabilities, a software update would be pushed to restore it. The announcement came after Farley said he spoke with policy leaders on the "importance of AM broadcast radio as a part of the emergency alert system." A bipartisan group of lawmakers introduced legislation in Washington last week that would require automakers to keep AM radio in all their vehicles. The bill was proposed in response to an increasing number of vehicles coming out without the first-generation radio broadcast technology.

A bipartisan group of lawmakers wants to make it illegal for carmakers to eliminate AM radio from their cars, arguing public safety is at risk. From the report: AM radio is one key way that government officials communicate with the public during natural disasters and other emergencies. Officials worry that if drivers don't have access, they might miss important safety alerts. Some manufacturers are eliminating AM radio from their electric vehicles (EVs) because of interference from the electric motors that creates annoying buzzing noises and faded signals.

They argue that car owners can still access AM radio content through digital streaming packages or smartphone apps (though such services sometimes require a subscription). While AM might seem like a relic of the past, nearly 50 million people still listen to it, according to Nielsen figures provided by the National Association of Broadcasters. The proposed legislation, to be introduced today by Senators Edward J. Markey (D-Mass.), Ted Cruz (R-Tex.) and others, would require all new vehicles to include AM radio at no additional charge. In the case of EV models that have already eliminated AM radio (from BMW, Ford, Mazda, Polestar, Rivian, Tesla, Volkswagen and Volvo), carmakers would be required to disclose the lack of AM access to consumers. The law would also direct the Government Accountability Office to study whether alternative communication systems are as effective in reaching the public during emergencies. Further reading: Saving AM Radio - the Case For and Against.

An anonymous reader quotes a report from Motherboard: The Federal Communications Commission (FCC) is using a new law to fine a pirate radio station operating in New York City for more than $2 million. For 15 years, Impacto 2, which has been operated by two brothers, has broadcast Ecuadorian news, culture, sports, and talk-radio on 105.5 FM in Queens. The feds have tried to shut it down repeatedly, but have never succeeded. The FCC announced the fine in a press release (PDF) last week. "The Commission proposed the maximum penalty allowable, $2,316,034, against brothers Cesar Ayora and Luis Angel Ayora for pirate radio broadcasting in Queens, New York," the release said. The FCC also said it was trying to seize $80,000 in equipment from a man broadcasting pirate radio in Eastern Oregon.

The FCC closely polices radio spectrums around the country, and provides licenses to companies who apply for specific frequencies. On the one hand, this makes sense, because use of radio frequencies are limited by physics and, without licenses, radio would be a free-for-all. Currently, the FCC is not providing any new FM or AM radio frequencies, according to its website. At the same time, pirate radio has a long history of providing access to the airwaves for independent broadcasters. In this case, the targets of the fine are a pair of brothers who were providing a vital community resource. In court documents about the fine, the FCC detailed its history with the Ayoras and Impacto 2. [...]

According to the FCC, the Ayoras have admitted to operating the radio station several times during interviews. The feds even went to the trouble of totaling every day it could prove the pair had run the radio station and detailed what it would like to charge them for it. "Based on the severity of the facts underlying these factors, we propose the maximum penalty of $115,80265 for each day of the 184 days during which the Ayoras operated their pirate radio station in 2022 for a total penalty of $21,307,568," the FCC's court documents said. That is, however, not possible under the new PIRATE Act. "We reduce the proposed penalty from $21,307,568 to $2,316,034 based on the statutory limits imposed by section 511(a) of the Act," it said in court documents.

The new 2024 Ford Mustang is losing its AM radio receiver, reports The Drive. A Ford spokesperson confirmed the feature's deletion, citing that "countries and automakers globally are modernizing radio by offering internet streaming through mobile apps, FM, or digital." From the report: The availability of AM radio in new cars has declined over the last decade with shifts in media consumption habits, with AM radio's audience evaporating in Europe and accounting for only a small minority of the U.S. population. [...] It's a trend of concern to current and former U.S. emergency officials, who recently wrote the Secretary of Transportation a letter advising action on AM radio's disappearance. AM radio is a crucial component of the U.S.'s national alert network, with just 75 stations reaching more than 90 percent of the country's population. Officials are concerned that AM receivers' decreasing availability in new cars could compromise their ability to reach citizens during emergencies.

The BBC is celebrating the centenary of its first official broadcast - a news bulletin that included a court report from the Old Bailey, details of London fog disruption, and billiards scores. From a report: It was broadcast by London station 2LO, but new research shows many early BBC moments came from northern England. Manchester station 2ZY aired the first children's show and introduced the first regular weather forecast. Birmingham's 5IT station broadcast the first "official concert" The BBC that began broadcasting at 6pm on 14 November 1922 was not the British Broadcasting Corporation of today. It was in fact the British Broadcasting Company and was made up of separate stations around the country operated by different companies. London 2LO was run by the Marconi company. Manchester's station was operated by Metropolitan-Vickers. However, in these early days few records were kept of what was broadcast.

But new research on the BBC's very early days has been carried out by Steve Arnold, a self-confessed Radio Times obsessive. His tricky task was to try to piece together the BBC's schedules before the Radio Times - so named as it listed the times that the new medium's shows were being broadcast - was first published in September 1923. He explained he found information in "gossip columns [in regional newspapers] mainly, people saying we listened to this last night and this is the only record of some of these things". Now, using sources from archive documents and newspapers, Steve has begun to piece together a picture of what the early BBC was doing. He says the Manchester station, which operated out of Trafford Park, seems to have been the best organised. "It looks as though the Manchester station is probably the origins of the BBC as much as the Marconi 2LO station (in London)," he said. "They seem to have had a far more professional approach. There's a lot more documentation and it seems they knew their onions. I'd love to know more."

Longtime Slashdot reader and tech historian, Kay Savetz, shares a blog post about the Internet Archive's efforts to build a library of amateur radio broadcasts. Here's an excerpt from the report: Internet Archive has begun gathering content for the Digital Library of Amateur Radio and Communications (DLARC), which will be a massive online library of materials and collections related to amateur radio and early digital communications. The DLARC is funded by a significant grant from the Amateur Radio Digital Communications Foundation (ARDC) to create a digital library that documents, preserves, and provides open access to the history of this community. The library will be a free online resource that combines archived digitized print materials, born-digital content, websites, oral histories, personal collections, and other related records and publications. The goals of the DLARC are to document the history of amateur radio and to provide freely available educational resources for researchers, students, and the general public. [...]

The DLARC project is looking for partners and contributors with troves of ham radio, amateur radio, and early digital communications related books, magazines, documents, catalogs, manuals, videos, software, personal archives, and other historical records collections, no matter how big or small. In addition to physical material to digitize, we are looking for podcasts, newsletters, video channels, and other digital content that can enrich the DLARC collections. Internet Archive will work directly with groups, publishers, clubs, individuals, and others to ensure the archiving and perpetual access of contributed collections, their physical preservation, their digitization, and their online availability and promotion for use in research, education, and historical documentation. All collections in this digital library will be universally accessible to any user and there will be a customized access and discovery portal with special features for research and educational uses.

Some carmakers are leaving AM radios out of their new cars. They say it's because of audio quality, but it isn't that simple. James Gilboy writes via The Drive. From the report: BMW and Volvo told me it was due to audio quality problems rooted in electromagnetic interference, of which EVs' drivetrains produce a significant amount. Cars' engines and other complex electronics have always made EM interference, but low-wattage static is relatively easy to shield against. It's not as simple with EVs that may pull hundreds of watts from their batteries, generating far more interference, reducing audio quality to a level both BMW and Volvo told me they consider insufficient. But it's hard to take them at their word when EVs are built with AM radios and in no small numbers. Detroit's Three -- Ford, General Motors, and Stellantis -- have produced or currently make EVs that include AM radio, even on flagship models. That goes for the Ford F-150 Lightning and Mustang Mach-E, GM EVs from the Cadillac Lyriq to the Chevy Bolt EUV and GMC Hummer EV, and even Stellantis's almost-forgotten Fiat 500e. Clearly, some carmakers don't think EM interference is a problem, and some EV owners agree. One user of an EV forum user said that AM radio "works fine" in their 500e and older Chevy Bolt.

We contacted all three of Detroit's giants for why they continue to include AM radios when some European makes have phased them out, but the answer establishes itself across those very same lines. AM radio has fallen out of favor in Europe, with Radio Info reporting in 2015 that stations were shutting down en masse from France to the Netherlands and Russia. The frequency has largely been superseded by the DAB format, which is a more advanced form of radio broadcasting with better audio quality and choice of stations. AM radio stations and their listeners are all but gone in Europe, so European carmakers may not need to include technology that many of its customers can't use.

In the U.S., on the other hand, radio remains a must for car buyers, with 89 percent of responders in a 2021 survey stating radio should be standard in new cars. That makes radio even more important to U.S. car buyers than USB ports, which only 84 percent said were necessary. AM audiences were in rapid decline as of a 2017 report by Inside Radio, but not to enough a degree for American carmakers to leave AM radios out of their products. It's not hard to figure out why AM's holding on here, either: AM signals travel further than FM broadcasts do and are cheaper to transmit, allowing them to cater to audiences in sparsely populated areas. Audio quality can't compare, but that's secondary to having anything to listen to at all in some parts of the continental United States.

The Federal Aviation Administration (FAA) will meet Wednesday with telecom and airline industry officials on a push to retrofit and ultimately replace some airplane radio altimeters that could face interference from C-Band 5G wireless service. Reuters reports: The altimeters give data on a plane's height above the ground and are crucial for bad-weather landings, but airline concerns about wireless interference from a planned 5G rollout led to disruptions at some U.S. airports earlier this year. The FAA wants to use the meeting to establish "an achievable timeframe to retrofit/replace radar altimeters in the U.S. fleet," according to a previously unreported letter from the FAA's top aviation safety official Chris Rocheleau reviewed by Reuters. It also asked aviation representatives "to offer options and commit to actions necessary to meet these objectives."

The planned three-and-a-half hour roundtable meeting will also include a discussion on prioritizing retrofits with antenna filters, which mitigate potential interference from 5G. Antenna filters are currently in production, officials said. A key question is how to determine which planes are most at risk of interference and should therefore get retrofitted first. The meeting will also look at what is set to happen after July 5 and outline "changes to U.S. national airspace operating environment as a result of future 5G C-band deployment in the coming months."

An anonymous reader shares an excerpt from a report by Gizmodo, written by Isaac Schultz: The Dark Matter Radio project is attempting to detect hidden photons in a specific frequency range by methodically turning the dial, in what amounts to a patient, sweeping search of the wavelengths where such a particle could sound off. Later generations of the radio will hunt axions. [...] The current Dark Matter Radio experiment is the prototype, or Pathfinder, for larger projects down the line. It consists of a liter-volume cylinder made of superconducting niobium metal, around which is tightly wound niobium wire. It looks a bit like someone wound guitar string on a spool's vertical axis instead of its horizontal axis. That's the Pathfinder's inductor. If a hidden photon resonating at the frequency the Pathfinder was tuned to passed through it, the change in magnetic field would induce a voltage around the contraption's inductor. "The null hypothesis is that there shouldn't be any radio waves inside of that box unless, in this case, hidden photons, which are our particular flavor of dark matter," said Stephen Kuenstner, a physicist at Stanford University and a member of the DM Radio team. Hidden photons "can pass through the box and they have some probability of interacting with the circuit in the same way that a radio wave would," Kuenstner said.

To amplify any signal the Pathfinder picks up, there's a hexagonal shield of niobium plates sheathing the aforesaid components that acts as a capacitor. That amplified signal is then transported to a quantum sensor called a SQUID (a Superconducting QUantum Interference Device), a technology invented by the Ford Motor Company in the 1960s. The SQUID lives on the bottom of the radio and measures and records any signals picked up. The smaller the expected mass for the axion becomes, the more elusive the particle is, as its interactions with ordinary matter are proportional to its mass. So it's important that the next generation of DM Radio becomes more sensitive. The way the experiment is set up, "the frequency on the dial is the mass of the axion," [said Kent Irwin, a physicist at Stanford University and SLAC and the principal investigator of Dark Matter Radio]. Convenient! The mass of these particles doesn't even compare to the smallest things you might think of, like atoms or quarks. These particles would be somewhere between a trillionth and a millionth of an electronvolt, and an electronvolt is about a billionth of a proton's mass.

The helium Pathfinder uses is gaseous, and remains a relatively warm 4 kelvin (in other words, four degrees above absolute zero), but the next experiment -- Dark Matter Radio 50L -- will use liquified helium, cooled to less than one degree above absolute zero. All the better for hearing dark matter with. DM Radio 50L sits in the corner of a large room in the Hansen Experimental Physics Lab at Stanford. The room looks a little bit like the TV room in Willy Wonka's factory; it has high ceilings, lots of inscrutable equipment, and is glaringly white. Two 6-foot-tall dilution refrigerators on one side, abutting a deep closet, are the radio. The two machines are fed gaseous helium sitting in tanks in the next room, which they then cool down into liquid helium of a frigid 2 kelvin. Magnets inside gold-plated copper and aluminum sheathes will do the job of converting any detected axions into radio waves for physicists to interpret. "The particle physics community is -- the analogy is often said -- just like a battleship. It takes a while to turn and it has a lot of momentum," Irwin said. "So even though I think that there's a lot of reasons to believe that these radio-like dark matter signals are more attractive -- the axionic signals -- than [Weakly Interactinv Massive Particles (WIMPs)], there's still a lot of giant experiments searching for little things, which is good." The team behind the Dark Matter Radio is "currently working with the Department of Energy on a next-next-generation experiment that will look for axions in a cubic meter, hence its name of DM Radio-m3," adds Gizmodo. "In the more distant future, Irwin and his team have aspirations for a project called DM Radio-GUT, which would be closer to the scale of some of the largest physics experiments on the planet."

"All told, Irwin said, the favored area for axion mass could be searched in the next couple of decades using larger experiments -- though the team could simply find an axion before then, potentially ending the hunt for dark matter in its entirety. With enough listening, we might have an entirely new particle for the textbooks. Or maybe there'll be radio silence."

fahrbot-bot shares a report from Live Science: Astronomers have detected a strange, repeating radio signal near the center of the Milky Way, and it's unlike any other energy signature ever studied. According to a new paper accepted for publication in The Astrophysical Journal and posted on the preprint server arXiv, the energy source is extremely finicky, appearing bright in the radio spectrum for weeks at a time and then completely vanishing within a day. This behavior doesn't quite fit the profile of any known type of celestial body, the researchers wrote in their study, and thus may represent "a new class of objects being discovered through radio imaging."

The radio source -- known as ASKAP J173608.2321635 -- was detected with the Australian Square Kilometer Array Pathfinder (ASKAP) radio telescope, situated in the remote Australian outback. In an ASKAP survey taken between April 2019 and August 2020, the strange signal appeared 13 times, never lasting in the sky for more than a few weeks, the researchers wrote. This radio source is highly variable, appearing and disappearing with no predictable schedule, and doesn't seem to appear in any other radio telescope data prior to the ASKAP survey.

When the researchers tried to match the energy source with observations from other telescopes -- including the Chandra X-ray Observatory and the Neil Gehrels Swift Observatory, as well as the Visible and Infrared Survey Telescope for Astronomy in Chile, which can pick up near-infrared wavelengths -- the signal disappeared entirely. With no apparent emissions in any other part of the electromagnetic spectrum, ASKAP J173608.2-321635 is a radio ghost that seems to defy explanation. Prior surveys have detected low-mass stars that periodically flare up with radio energy, but those flaring stars typically have X-ray counterparts, the researchers wrote. That makes a stellar source unlikely here. Dead stars, like pulsars and magnetars (two types of ultradense, collapsed stars), are also unlikely explanations, the team wrote. The report goes on to say that the closest match is a mysterious class of object known as a galactic center radio transient (GCRT), a rapidly glowing radio source that brightens and decays near the Milky Way's center, usually over the course of a few hours. "So far, only three GCRTs have been confirmed, and all of them appear and disappear much more quickly than this new ASKAP object does," reports Live Science. "However, the few known GCRTs do shine with a similar brightness as the mysterious signal, and their radio flare-ups are never accompanied by X-rays."

An anonymous reader quotes a report from The Verge: It's rare that apps come back from the dead, but it seems like that may be what's happening with Turntable.fm, a site that let users create their own radio stations and DJ sets with music they curated before it got shuttered in 2014. Even rarer, it seems like there are two versions involved in the revival: the original Turntable.fm site is back up and running (with the involvement of its original founder, Billy Chasen), but there's also Turntable.org, which will reportedly be launching in beta this April.

The two sites seem to be taking different directions: Turntable.org, the new version, mentions there will be a subscription fee, while the original seems to be largely unchanged from the one that shut down in 2014. While the original founder has confirmed he's involved with the .fm version, the .org version also has OGs working on it: the Our Team section mentions an original Turntable founding member as well as the artist who designed the original avatars in 2011.

The original app, and the current Turntable.fm, lets you create a virtual room, then select what music you want to play for anyone listening. At the moment, the song selection seems to be limited to what's available on YouTube, so you probably won't be able to sneakily slide in your mixtape. There appears to be a SoundCloud integration that's not working yet. Also, the whole site seems to be phasing in and out of existence, perhaps due to word of its return getting around. Assuming you can find your way in, the audience can chat about your great (or awful) song selections. You can also co-DJ with collaborators, if you feel like riffing off a friend, or co-worker.

A new quantum sensor can analyze the full spectrum of radio frequency and real-world signals, unleashing new potentials for soldier communications, spectrum awareness and electronic warfare. Phys.Org reports: Army researchers built the quantum sensor, which can sample the radio-frequency spectrum -- from zero frequency up to 20 GHz -- and detect AM and FM radio, Bluetooth, Wi-Fi and other communication signals. The Rydberg sensor uses laser beams to create highly-excited Rydberg atoms directly above a microwave circuit, to boost and hone in on the portion of the spectrum being measured. The Rydberg atoms are sensitive to the circuit's voltage, enabling the device to be used as a sensitive probe for the wide range of signals in the RF spectrum.

The Rydberg spectrum analyzer has the potential to surpass fundamental limitations of traditional electronics in sensitivity, bandwidth and frequency range. Because of this, the lab's Rydberg spectrum analyzer and other quantum sensors have the potential to unlock a new frontier of Army sensors for spectrum awareness, electronic warfare, sensing and communications -- part of the Army's modernization strategy. The peer-reviewed journal Physical Review Applied published the researchers' findings, Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GigaHerz, co-authored by Army researchers Drs. David Meyer, Paul Kunz, and Kevin Cox.

New submitter SirKveldulv shares a report from Nikkei Asia: Livestreaming platforms now must limit the amount of money a user can give hosts as a tip. Users must register their real names to buy the virtual gifts, in addition to the ban on teens giving such gifts. The [National Radio and Television Administration, China's media watchdog] also asked the platforms to strengthen training for employees who screen content and encouraged the companies to hire more censors, who also will need to register with regulators.

The media regulator will create a blacklist of hosts who frequently violate the rules, and ban them from hosting livestreaming programs on any platform. "The livestreaming platforms should prioritize social benefits and spread the positive energy," the notification said. The administration also asked the platforms to strengthen training for employees who screen content and encouraged the companies to hire more censors, who also will need to register with regulators. The media regulator will create a blacklist of hosts who frequently violate the rules, and ban them from hosting livestreaming programs on any platform. "The livestreaming platforms should prioritize social benefits and spread the positive energy," the notification said.

The giant, aging cables that support one of the world's largest single-dish radio telescopes are slowly unraveling in this U.S. territory, pushing an observatory renowned for its key role in astronomical discoveries to the brink of collapse. The Associated Press reports: The Arecibo Observatory, which is tethered above a sinkhole in Puerto Rico's lush mountain region, boasts a 1,000-foot-wide (305-meter-wide) dish featured in the Jodie Foster film "Contact" and the James Bond movie "GoldenEye." The dish and a dome suspended above it have been used to track asteroids headed toward Earth, conduct research that led to a Nobel Prize and helped scientists trying to determine if a planet is habitable. Last week, one of the telescope's main steel cables that was capable of sustaining 1.2 million pounds (544,000 kilograms) snapped under only 624,000 pounds (283,000 kilograms). That failure further mangled the reflector dish after an auxiliary cable broke in August, tearing a 100-foot hole and damaging the dome above it.

Officials said they were surprised because they had evaluated the structure in August and believed it could handle the shift in weight based on previous inspections. It's a blow for the telescope that more than 250 scientists around the world were using. The facility is also one of Puerto Rico's main tourist attractions, drawing some 90,000 visitors a year. Research has been suspended since August, including a project aiding scientists in their search for nearby galaxies. Some new cables are scheduled to arrive next month, but officials said funding for repairs has not been worked out with federal agencies. Scientists warn that time is running out. Only a handful of cables now support the 900-ton platform. The observatory estimates the damage at more than $12 million and is seeking money from the National Science Foundation, an independent federal agency that owns the observatory. The report notes that the observatory is considered crucial for the study of pulsars, which are the remains of stars that can be used to detect gravitational waves. It's also used to search for natural hydrogen, which can reveal how certain cosmic structures are formed.

The first detection of a fast radio burst inside the Milky Way leads scientists back to a magnetar, partially solving a long-standing mystery. CNET reports: Sifting through a trove of radio telescope data in 2007, Duncan Lorimer, an astrophysicist at West Virginia University, spotted something unusual. Data obtained six years earlier showed a brief, energetic burst, lasting no more than 5 milliseconds. Others had seen the blip and looked past it, but Lorimer and his team calculated that it was an entirely new phenomenon: a signal emanating from somewhere far outside the Milky Way. The team had no idea what had caused it but they published their results in Science. The mysterious signal became known as a "fast radio burst," or FRB. In the 13 years since Lorimer's discovery, dozens of FRBs have been discovered outside of the Milky Way -- some repeating and others ephemeral, single chirps. Astrophysicists have been able to pinpoint their home galaxies, but they've struggled to identify the cosmic culprit, putting forth all sorts of theories, from exotic physics to alien civilizations.

On Wednesday, a trio of studies in the journal Nature describes the source of the first FRB discovered within the Milky Way, revealing the mechanism behind at least some of the highly energetic radio blasts. The newly described burst, dubbed FRB 200428, was discovered and located after it pinged radio antennas in the US and Canada on April 28, 2020. A hurried hunt followed, with teams of researchers around the globe focused on studying the FRB across the electromagnetic spectrum. It was quickly determined that FRB 200428 is the most energetic radio pulse ever detected in our home galaxy.

In the suite of new papers, astrophysicists outline their detective work and breakthrough observations from a handful of ground- and space-based telescopes. Linking together concordant observations, researchers pin FRB 200428 on one of the most unusual wonders of the cosmos: a magnetar, the hypermagnetic remains of a dead supergiant star. It's the first time astrophysicists have been able to finger a culprit in the intergalactic whodunit -- but this is just the beginning. "There really is a lot more to be learned going forward," says Amanda Weltman, an astrophysicist at the University of Cape Town and author of a Nature news article accompanying the discovery. "This is just the first exciting step."

A new large-scale survey of the sky looked into the dark forest of the cosmos, examining over 10 million stars, but failed to turn up any evidence of alien technologies. CNET reports: The study, published in Publications of the Astronomical Society of Australia on Monday, details a search for extraterrestrial intelligence (SETI) using the Murchison Widefield Array (MWA), a collection of 4096 antennas planted in the red soil of Western Australia that detects radio signals from space. "They are little spider-like antennas that sit on the ground," explains Chenoa Tremblay, co-author on the study and astrophysicist with CSIRO, an Australian government scientific research organization.

Tremblay and co-author Stephen Tingay, from the International Centre for Radio Astronomy Research, used the MWA to listen out for "technosignatures," or evidence of alien technology, in a portion of the sky around the Vela constellation. Tremblay explains this region is scientifically interesting because a large number of stars have exploded and died, creating ideal conditions for new stars to form. The search for extraterrestrial life "piggy-backs" on other work studying this region to understand the life cycle of stars. [...] After listening to the Vela region for 17 hours, no unknown signals were detected. While the survey was able to capture over 10.3 million stellar sources and contained six known exoplanets (likely many more exist in the region), the team notes it was like trying to find something in an ocean, but only studying "a volume of water equivalent to a large backyard swimming pool." And there's another big caveat. "Looking for technosignatures is assuming that the civilization have technology similar to our own," says Tremblay.

According to a new report from Pew Research, U.S. adults who get their news largely from social media platforms tend to fllow the news less closely and end up less informed on several key subjects when compared to those who use other sources, like TV, radio, and news publications. TechCrunch reports: The firm first asked people how they most commonly get their news. About one-in-five (18%) said they mostly use social media to stay current. That's close the percentages of those who say they use local TV (16%) or cable TV (16%) news, but fewer than those who say they go directly to a news website or app (25%). Another 13% said they use network TV and only 3% said they read a newspaper. To be clear, any study that asks users to self-report how they do something isn't going to be as useful as those that collect hard data on what the consumers actually do. In other words, people who think they're getting most of their news from TV may be, in reality, undercounting the time they spent on social media â" or vice versa.

That said, among this group of "primarily" social media news consumers, only 8% said they were following the key news story of the 2020 U.S. election "every closely," compared with 37% of cable TV viewers who said the same, or the 33% of print users who also said this. The social media group, on this topic, was closer to the local TV group (11%). On the topic of the coronavirus outbreak, only around a quarter (23%) of the primarily social media news consumers said they were following news of COVID-19 "very closely." All other groups again reported a higher percentage, including those who primarily used cable TV (50%), national network TV (50%), news websites and apps (44%), and local TV (32%) for news.

Related to this finding, the survey respondents were also asked 29 different fact-based questions about news topics from recent days, including those on Trump's impeachment, the COVID-19 outbreak, and others. Those who scored the lowest on these topics were the consumers who said they primarily used social media to get their news. Across 9 questions related to foundational political knowledge, only 17% of primarily social media news consumers scored "high political knowledge," meaning they got 8 to 9 of the questions right. 27% scored "middle political knowledge" (6-7 right) and 57% scored "low political knowledge" (5 or fewer right.) The only group that did worse were those who primarily relied on local TV. 45% of who got their news from news primarily via websites and apps, meanwhile, had "high political knowledge," compared with 42% for radio, 41% for print, 35% for cable TV, and 29% for network TV. The social media group of news consumers was also more exposed to fringe conspiracies, like the idea that the pandemic was intentionally planned.

Julianne Pepitone from IEEE Spectrum writes about the uncertain future of ham radio. An anonymous reader shares an excerpt: Will the amateur airwaves fall silent? Since the dawn of radio, amateur operators -- hams -- have transmitted on tenaciously guarded slices of spectrum. Electronic engineering has benefited tremendously from their activity, from the level of the individual engineer to the entire field. But the rise of the Internet in the 1990s, with its ability to easily connect billions of people, captured the attention of many potential hams. Now, with time taking its toll on the ranks of operators, new technologies offer opportunities to revitalize amateur radio, even if in a form that previous generations might not recognize. The number of U.S. amateur licenses has held at an anemic 1 percent annual growth for the past few years, with about 7,000 new licensees added every year for a total of 755,430 in 2018. The U.S. Federal Communications Commission doesn't track demographic data of operators, but anecdotally, white men in their 60s and 70s make up much of the population. As these baby boomers age out, the fear is that there are too few young people to sustain the hobby.

This question of how to attract younger operators also reveals deep divides in the ham community about the future of amateur radio. Like any large population, ham enthusiasts are no monolith; their opinions and outlooks on the decades to come vary widely. And emerging digital technologies are exacerbating these divides: Some hams see them as the future of amateur radio, while others grouse that they are eviscerating some of the best things about it. No matter where they land on these battle lines, however, everyone understands one fact. The world is changing; the amount of spectrum is not. And it will be hard to argue that spectrum reserved for amateur use and experimentation should not be sold off to commercial users if hardly any amateurs are taking advantage of it. One of the key debates in ham radio is its main function in the future: Is it a social hobby? A utility to deliver data traffic? And who gets to decide? "Those questions have no definitive or immediate answers, but they cut to the core of the future of ham radio," writes Pepitone. "Loring Kutchins, president of the Amateur Radio Safety Foundation, Inc. (ARSFi) -- which funds and guides the 'global radio email' system Winlink -- says the divide between hobbyists and utilitarians seems to come down to age."

"Younger people who have come along tend to see amateur radio as a service, as it's defined by FCC rules, which outline the purpose of amateur radio -- especially as it relates to emergency operations," Kutchins (W3QA) told Spectrum last year. Kutchins, 68, expanded on the theme in a recent interview: "The people of my era will be gone -- the people who got into it when it was magic to tune into Radio Moscow. But Grandpa's ham radio set isn't that big a deal compared to today's technology. That doesn't have to be sad. That's normal."

"Ham radio is really a social hobby, or it has been a very social hobby -- the rag-chewing has historically been the big part of it," says Martin F. Jue (K5FLU), founder of radio accessories maker MFJ Enterprises, in Starkville, Miss. "Here in Mississippi, you get to 5 or 6 o' clock and you have a big network going on and on -- some of them are half-drunk chattin' with you. It's a social group, and they won't even talk to you unless you're in the group."

Tilley, an amateur radio operator living in Canada, found a "zombie" military satellite that was supposed to shut down in 1972. NPR reports: Recently, Tilley got interested in a communications satellite he thought might still be alive -- or at least among the living dead. LES-5, built by the Massachusetts Institute of Technology's Lincoln Laboratory, was launched in 1967. Tilley was inspired by another amateur who in 2016 had found LES-1, an earlier satellite built by the same lab. What was intriguing to him about LES-5 was that if it was still working, it might be the oldest functioning satellite still in geostationary orbit. By scouring the Internet, he found a paper describing the radio frequency that LES-5, an experimental military UHF communications satellite, should be operating on -- if it was still alive. So he decided to have a look.

"This required the building of an antenna, erecting a new structure to support it. Pre-amps, filters, stuff that takes time to gather and put all together," he says. "When you have a family and a busy business, you don't really have a lot of time for that," he says. But then came the COVID-19 pandemic. British Columbia, where Tilley lives, was on lockdown. Like many of us, suddenly Tilley had time on his hands. He used it to look for LES-5, and on March 24, he hit the ham radio equivalent of pay dirt. While Tilley thinks it may be possible to send commands to the satellite, the MIT lab that built LES-5 didn't comment on the matter when NPR inquired.

Sonos launched its first audio service Tuesday, called Sonos Radio. It promises free and exclusive music programming across a few dozen stations. From a report: Many of these stations will be supported by advertising -- a new business for Sonos, which the company is entering at a time when the ad business is feeling the pressure of an evolving economic downturn. However, for Sonos, the radio service also represents a new opportunity to lean more heavily into product partnerships like its existing relationship with Ikea, and expand to new product categories, including automotive. As such, it's an interesting example for a consumer electronics company using services not only to generate revenue but also as a way to expand its core business.

Satellite radio giant SiriusXM announced today it's made its 300-plus channel streaming service available for free in North America starting today through May 15.

People staying at home due to the coronavirus pandemic appear to be listening to more radio rather than music apps, figures suggest. The BBC reports: Global, which owns Capital FM and talk station LBC, said online radio listening had risen by 15%. The BBC said streaming of its radio stations had risen 18% since last week. Meanwhile, data from two US analytics companies suggested use of music-streaming apps such as Spotify had dipped by about 8%.

According to trusted music industry monitor BuzzAngle, US music streaming between 13-19 March fell by 8.8% compared with the previous week. Rolling Stone magazine, which uses a different data provider, Alpha Data, said streams were down 7.8%. But not all services are equally affected. Classical music site Primephonic said streaming had gone up by about 20% since isolation measures had been introduced in Europe. "There are likely to be multiple causes," said BBC News music reporter Mark Savage. "Fewer people are commuting to work or going to the gym and shops that use Spotify for their in-store music are closing their doors. People who stream music in the office also seem to be turning off and watching Netflix instead and there's a big rise in radio listening - suggesting we're seeking companionship alongside our music."

An anonymous reader quotes a report from IEEE Spectrum: A test by Penumbra Brands to measure how much radiofrequency energy an iPhone 11 Pro gives off found that the phone emits more than twice the amount allowable by the U.S. Federal Communications Commission. The FCC measures exposure to RF energy as the amount of wireless power a person absorbs for each kilogram of their body. The agency calls this the specific absorption rate, or SAR. For a cellphone, the FCC's threshold of safe exposure is 1.6 watts per kilogram. Penumbra's test found that an iPhone 11 Pro emitted 3.8 W/kg.

Ryan McCaughey, Penumbra's chief technology officer, said the test was a follow up to an investigation conducted by the Chicago Tribune last year. The Tribune tested several generations of Apple, Samsung, and Motorola phones, and found that many exceeded the FCC's limit. Penumbra used RF Exposure Labs, an independent, accredited SAR testing lab for the tests (The Tribune also used the San Diego-based lab for its investigation). Penumbra was conducting the test, which also included testing an iPhone 7, to study its Alara phone cases, which the company says are designed to reduce RF exposure in a person. It's worth noting that when the FCC conducted a follow-up investigation they did not find evidence that any of the phones exceed SAR limits. "That said, while the Tribune and Penumbra both used off-the-shelf phones, the FCC largely tested phones supplied by the manufacturers, including Apple," adds IEEE Spectrum.

Joel Moskowitz, a researcher at UC Berkeley, says that could be because there's a systematic problem with RF Exposure Lab's testing methods, or Apple rigged the software in the provided test phones to ensure they didn't put out enough power to exceed the SAR limit. Either way, both McCaughey and Moskowitz agree that the FCC's RF exposure testing is woefully out of date, as the limits reflect what the FCC deemed safe 25 years ago.

An anonymous reader quotes a report from TechCrunch: An amateur radio rig exposed to the internet and discovered by a security researcher was collecting real-time medical data and health information broadcast by hospitals and ambulances across U.K. towns and cities. The rig, operated out of a house in North London, was picking up radio waves from over the air and translating them into readable text. The hobbyist's computer display was filling up with messages about real-time medical emergencies from across the region. For some reason, the hobbyist had set up an internet-connected webcam pointed at the display. But because there was no password on the webcam, anyone who knew where to look could also see what was on the rig's computer display.

Daley Borda, a security researcher and bug bounty hunter, stumbled upon the exposed webcam. The live stream was grainy, and the quality of the images so poor that it was just possible to make out the text on the display. "You can see details of calls coming in -- their name, address, and injury," he told TechCrunch. TechCrunch verified his findings. Messages spilling across the screen appeared to direct nearby ambulances where to go following calls to the 999 emergency services. One message said a 98-year-old man had fallen at his home address. A few moments later, another message said a 49-year-old male was complaining of chest pains at a nearby residence. One after the other, messages were flooding in, describing accidents, incidents and medical emergencies, often including their home addresses. "The hobbyist was picking up and decoding pager communications from a nearby regional National Health Service trust," adds TechCrunch. These devices remain a fixture in UK hospitals and "allow anyone to send messages to one or many pagers at once by calling a dedicated phone number, often manned by an operator, which are then broadcast as radio waves over the pager network."

While the NHS still uses about 130,000 pagers, according to the UK government, it's not clear how many trusts are exposing medical information -- if at all.

An anonymous reader quotes a report from Fast Company: Motorola Solutions (not to be confused with Motorola Mobility, which makes the smartphones you know), the biggest global player in these LMR walkies, is releasing what appears to be the most advanced walkie-talkie ever. Called the APX Next, it's a chunky black brick with a thick antenna and a giant push-to-talk button on its side. Much like an iPhone, it also features a touchscreen on its front -- but don't be distracted by that. Its real innovation was born from 2,000 hours of interviews and testing with more than 50 emergency service agencies, including SWAT teams and detectives. It's a voice-recognition system that can operate in extremely loud environments, with artificial intelligence software that can look up 95 of the most common things a police officer or firefighter would call into dispatch -- like a driver's license, or license plate -- without any human operator on the other end of the line. But its ultimate promise is simply to free up the user's hands as much as possible, ensuring that someone is as safe and capable as possible during an emergency.

APX Next is a walkie-talkie and a cellphone combined. It has both the high-powered radio chip for land communications and a low-powered 4G/LTE chip for cell-tower data. These two chips can work at the same time, which is an engineering challenge, especially because the walkie-radio has 25 times the wattage of the 4G chip. The core buttons, including the large talk button, are all designed as you'd expect, to ensure they can be used without looking, and purely by muscle memory in stressful situations. Four separate microphones capture your voice, with programming designed specifically to cancel out exceptionally loud noises. But it isn't always listening for a wake word like the Echo or Google Home. You need to hit a button to cue the assistant. The company says it's using unnamed third parties to handle the natural language processing in the cloud. "What Motorola did was train the model specifically to handle things like ten-codes and even regionally specific dialects across the U.S," the report says.

"Once a question is sent to the cloud, the AI is able to scour a city or force's database for the same private information a dispatcher would be looking up." What's also neat is that the AI won't automatically read sensitive information out loud. Instead, the radio will beep when it has an answer, and the user can get to a private place, if they wish, before hitting a button to hear the results.

IEEE Spectrum describes how the U.S. Defense Advanced Research Projects Agency (DARPA) partnered with Pivot Technology Services to help them relocate their massive radio-frequency emulation testbed, called "Colosseum." The testbed was built for the agency's Spectrum Collaboration Challenge (SC2) -- a three-year competition to demonstrate the validity of using AI to work together in order to use wireless spectrum more efficiently than operating on pre-allocated bands. Slashdot reader Wave723 shares an excerpt from the report: Colosseum was originally built and housed at Johns Hopkins University Applied Physics Laboratory. That changed at the beginning of October, when the testbed was dismantled and later trucked to Los Angeles for the competition's finale, scheduled to begin at 3:30pm PDT today at MWC Los Angeles. [...] There may have been some molehills during the checks, but moving Colosseum definitely qualifies as a mountain. The testbed uses 3 Peta-Ops per second of computing power and 52 terabytes per second of data to emulate 65,000 channel operations between 256 wireless devices. It can draw up to 92 kilowatts of power and requires 200 gallons of water per minute to cycle through its cooling system to keep it from overheating.

Colosseum is housed within a space twice of the size of a cargo container -- in fact, its housing is literally built from two converted cargo containers put side by side. The halves arrived at the Los Angeles Convention Center during the set-up for MWC Los Angeles, and were hauled into the building and onto the convention floor by two 18-wheelers. We're going to move right past the crazy fact that DARPA and its hired logistics companies drove two semi-trucks into the Los Angeles Convention Center, because it gets better. To actually lower Colosseum's halves onto the ground, the next step involved something that both Tilghman and Gabel referred to as a "forklift ballet." As it turned out, the convention center didn't have a forklift strong enough to lift either half, so everyone improvised and used four smaller forklifts simultaneously by carefully arranging them around each half of Colosseum. It worked, but Gabel, in showing me a video of the forklift ballet, pointed out a moment where one of the forklift's rear wheels lifted off the ground as the machine and its operator grappled with Colosseum's weight...

Physicists at Stockholm University and the Max Planck Institute of Physics have proposed a novel design for an "axion radio" that employs cold plasmas (gases or liquids of charged particles) to "listen" for dark matter. Their paper has been published in the journal Physical Review Letters. Ars Technica reports: "Finding the axion is a bit like tuning a radio: you have to tune your antenna until you pick up the right frequency," said co-author Alexander Millar, a postdoc at Stockholm University. "Rather than music, experimentalists would be rewarded with 'hearing' the dark matter that the Earth is traveling through." [...] According to quantum mechanics, particles can exhibit wavelike behavior as well as particle characteristics. So an axion would behave more like a wave (or wave packet) than a particle, and the size of the wave packets is inversely proportional to their mass. That means these very light particles don't necessarily need to be tiny. The downside is that they interact even more weakly with regular matter than [weakly interacting massive particles], or WIMPS, so they cannot be produced in large colliders -- one current method for detecting WIMPs.

Physicists don't know what the axion's mass might be, so there's a broad parameter space in which to search, and no single instrument can cover all of it, according to co-author Matthew Lawson, also a postdoc at Stockholm University. That's why physicists have been developing all kinds of smaller experiments for detecting axions, from atomic clocks and resonating bars, to shining lasers at walls on the off-chance a bit of dark matter seeps through the other side. Yet most instruments to date are capable of detecting axions only within a very limited mass range. [...] Lawson et al. have come up with an innovative design for a tunable plasma-based haloscope. Their proposed instrument exploits the fact that axions inside a strong magnetic field will generate their own small electric field. This in turn drives oscillations in the plasma, amplifying the signal. [...] At the moment, Lawson et al.'s design is theoretical, but several experimental groups are actively working on building prototypes. "The fact that the experimental community has latched onto this idea so quickly is very exciting and promising for building a full-scale experiment," said Millar.

Japan's sole pager provider, Tokyo Telemessage Inc, will shut down radio signals for its services Tuesday, ending support for the device first introduced in the country half a century ago. Japan Today reports: In recent years, the device had been favored mainly by those working in hospitals, where cellphone use was once discouraged because of concerns over the effect of electromagnetic waves on medical devices and where cellphone reception can sometimes be poor. Beeper services in Japan began in 1968 with the predecessor of Nippon Telegraph and Telephone Corp. Users would call a specific number via a landline, causing the device to emit a beeping sound. But from the late 1980s onward, the popularity of pagers grew as they could be used to send messages combining numbers and text characters.

The number of pager users exceeded 10 million in 1996, with the device becoming one of the defining symbols of a subculture among female high school students along with "loose socks" and taking photos in puri-kura photo booths. However, beeper services declined with the introduction of mobile phones. The number of pager users further decreased as e-mailing, texting as well as taking and sending pictures by phone became standard.

An anonymous reader quotes a report from Motherboard: Meet AdBlock Radio, an adblocker for live radio streams and podcasts. Its creator, Alexandre Storelli, told Motherboard he hopes to help companies "develop alternative business models for radio and podcast lovers that do not want ads." "Ads exploit the weaknesses of many defenseless souls," Storelli told Motherboard. "Ads dishonestly tempt people, steal their time and promise them a higher social status. Blocking them will be a relieving experience for many."

Most audio ads exploit "auditory artifacts" to produce an ad that can't be ignored or tuned out because it feels louder than it actually is -- this has gotten so bad that there has actually been a "sonic arms race" where ads have been made increasingly louder over the years. "Adblock Radio detects audio ads with machine-learning and Shazam-like techniques," Storelli wrote about the project. He said he's been working on it for more than three years and that it uses techniques such as speech recognition, acoustic fingerprinting, and machine learning to detect known ad formats. It uses a crowdsourced database of ads and "acoustic fingerprinting," which converts audio features into a series of numbers that can be combed by an algorithm. Storelli has made Adblock Radio open-source and given detailed instructions on how to build on it, integrate it into user devices, and deploy it in a way that pressures radio stations (and podcasts) to self-regulate the quality of their ads.

Newer Guy writes: Entercom Communications, one of the USA's largest radio broadcasting companies, has been hit with a ransomware-like incident. It apparently came in from a computer in the programming department and has taken out the company's email system and servers. All their radio stations across the country have been affected. The ransomware people demanded half a million dollars to restore things; Entercom refused to pay.

Longtime Slashdot reader ole writes: GNOME Internet Radio Locator 1.6.0 is now freely available for GNOME systems. The 1.6.0 release is a stable release with Internet radio stations from Norway, Sweden, Denmark, England, Scotland, France and Belgium, as well as U.S.A., Canada, Mexico and Guatemala, mapped for GNOME Maps and city text search interface with auto-completion for 76 world cities that are featured in this release. You may download the 1.6.0 release of GNOME Internet Radio Locator here and download packages for Fedora 28 and 29 on x86_64 here

WFMU's Free Music Archive -- a digital library of high-quality and legal downloads that users could listen to, remix, and share -- is shutting down due to funding shortages. The Verge reports: "The future is uncertain, has been my mantra lately," says Cheyenne Hohman, who's been the director of the Free Music Archive since 2014. The shutdown date was initially the 9th, but has since been pushed back to November 16th because the FMA is in early talks with four different organizations that are interested in taking the project over. "The site may stay up a little bit longer to ensure, at the very least, that our collections are backed up on archive.org and the Wayback Machine." Even so, it's not a perfect solution. "If it just goes into archive.org, it's going to be there in perpetuity, but it's not going to be changing at all," Hohman says. "It's not going to be the same thing, that sort of community and project that it was for ... almost 10 years."

Sirius XM has agreed to buy online-music service Pandora for $3.5 billion, as the satellite-radio company looks to add streaming services in the increasingly competitive fight for listeners. From a report: According to the announcement, the deal will create "the world's largest audio-entertainment company," with more than $7 billion in projected revenue in 2018 and more than 100 million monthly listeners, combining SiriusXM's 36 million subscribers and Pandora's 70 million-plus monthly active users. It also moves SiriusXM and its parent company, Liberty Media, aggressively into the streaming market. The transaction is expected to close in the first quarter of 2019 and is subject to approval by Pandora stockholders; expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act and certain competition laws of foreign jurisdictions; and other customary closing conditions. On a call with analysts, Jim Meyer, Sirius XM's chief executive, said that the acquisition would enable Sirius to try to keep listeners who did not want to pay for music by diverting them toward Pandora's free ads-based model.

T-Mobile and Ericsson have signed a multi-year $3.5 billion agreement to build out T-Mobile's 5G infrastructure. The telecommunications company "will deploy Ericsson's Radio System portfolio, including 5G New Radio and NR hardware and software compliant with 3GPP standards," reports ZDNet. From the report: According to the companies, the contract also encompasses Ericsson's digital services solutions, including dynamic orchestration, business support systems or BSS, and Ericsson Cloud Core. Meanwhile, T-Mobile's already installed base of Ericsson Radio System radios will be able to run 5G NR technology via remote software installation. T-Mobile and Ericsson rival Nokia also announced a $3.5 billion 5G deal back in July. Add it up and T-Mobile is investing $7 billion in 5G between the two companies. As part the Nokia agreement, T-Mobile said it would use Nokia's 5G network technology including software, services and hardware. The carrier also said Nokia would help make its "600 MHz and 28 GHz millimeter wave 5G capabilities compliant with 3GPP 5G New Radio (NR) standards" -- echoing its current plans with Ericsson. In other 5G-related news, Verizon will begin offering installation of its 5G home broadband in select markets on October 1st. "Customers [in Houston, Indianapolis, Los Angeles, and Sacramento] will be able to begin ordering service once the installation is complete, with pricing set at $50 for Verizon Wireless customers and $70 for non-VZW customers," reports PhoneDog. Network speeds are expected to be around 300Mbps, with peak speeds nearing 1Gbps. There will also be no data caps.

An anonymous reader quotes a report from MIT Technology Review: David Anderson at Rydberg Technologies in Ann Arbor, Michigan, and a couple of colleagues, have reinvented the antenna from scratch. Their new device works in an entirely different way from conventional antennas, using a laser to measure the way radio signals interact with certain types of atoms. The secret sauce in the new device is Rydberg atoms. These are cesium atoms in which the outer electrons are so excited that they orbit the nucleus at great distance. At these distances, the electrons' potential energy levels are extremely closely spaced, and this gives them special properties. Indeed, any small electric field can nudge them from one level to another. Radio waves consist of alternating electric fields that readily interact with any Rydberg atoms they come across. This makes them potential sensors.

But how to detect this interaction? A gas made of Rydberg atoms has another property that turns out to be useful -- it can be made transparent by a laser tuned to a specific frequency. This laser essentially saturates the gas's ability to absorb light, allowing another laser beam to pass through it. However, the critical frequency at which this happens depends crucially on the properties of the Rydberg atoms in the gas. When these atoms interact with radio waves, the critical frequency changes in response. That's the basis of the radio detection. Anderson and co create a gas of cesium atoms excited into Rydberg states. They then use a laser tuned to a specific frequency to make the gas transparent. Finally, they shine a second laser through the gas and measure how much light is absorbed, to see how the transparency varies with ambient radio waves. The signal from a simple light-sensitive photodiode then reveals the way the radio signals are frequency modulated or amplitude modulated. The atomic radio can detect a huge range of signals -- over four octaves from the C band to the Q band, or wavelengths from 2.5 to 15 centimeters. It also should be less insensitive to electromagnetic interference due to its lack of conventional radio circuitry. "The atomic radio wave receiver operates by direct real-time optical detection of the atomic response to AM and FM baseband signals, precluding the need for traditional de-modulation and signal-conditioning electronics," say Anderson and co.

New submitter SteveSgt writes: A forum thread on QRZ.com indicates that the shortwave time broadcasts by the National Institute of Standards and Technology (NIST) from stations WWV (Colorado) and WWVH (Hawaii) may be slashed in budget year 2019. [One of the proposed reductions includes "$6.3 million supporting fundamental measurement dissemination, including the shutdown of NIST radio stations in Colorado and Hawaii."] While the WWV broadcasts may seem like an anachronism to some Slashdotters, they remain a crucial component in many unexpected services, from over-the-air broadcasters and traffic signals, to medical devices, wall clocks, and wrist watches. The signals serve as standard beacons for radio propagation, and as a frequency reference for alignment of a broad range of communications equipment. It's easy to imagine that not even the NIST knows every service and device that could be impacted by this decision.

The merger that once seemed all but inevitable has fallen apart. According to The Wall Street Journal, Tribune Media has terminated its merger agreement with rival TV station-owner Sinclair Broadcast Group (Warning: source may be paywalled; alternative source). The company is also suing Sinclair for failing to make sufficient efforts to get their $3.9 billion deal approved by regulators. From the report: The suit, filed in Delaware Chancery Court, alleges that Sinclair breached the merger agreement by engaging in "unnecessarily aggressive and protracted negotiations" with regulators over their requirement that Sinclair divest stations in certain markets to obtain approval, Tribune said in a statement. The deal structures Sinclair proposed, which Tribune said were done to allow it to maintain control over stations, created risks for the deal in violation of the merger agreement. Tribune is seeking financial damages.

The collapse of the deal and lawsuit mark a stunning turn of events for a deal that when it was announced in April of 2016 seemed certain to receive regulatory approval. "Our merger cannot be completed within an acceptable time frame, if ever, Tribune Media Chief Executive Peter Kern said in a statement. "This uncertainty and delay would be detrimental to our company and our shareholders. Accordingly, we have exercised our right to terminate the merger agreement, and, by way of our lawsuit, intend to hold Sinclair accountable." The merger hit the rocks last month when FCC commissioners voted to send the proposed sale to a judge. "FCC chairman Ajit Pai raised 'serious concerns' about Sinclair's selloff of 21 stations it had proposed in order to remain under station ownership limits post-merger," Engadget reported last month. "Had Sinclair declined to sell off some stations, its 173 broadcast stations in 81 markets, combined with Tribune's 42 stations in 33 markets would reach 72 percent of U.S. TV households."

T-Mobile has entered into a $3.5 billion multi-year agreement with Nokia to build out its 5G network. Nokia will supply T-Mobile with its end-to-end 5G technology, software, and services, including commercial AirScale radio platforms and cloud-native core, AirFrame hardware, CloudBand software, SON, and 5G Acceleration Services," reports PhoneDog. From the report: Nokia will help T-Mobile build a nationwide 5G network that'll use both 600MHz and 28GHz millimeter wave (mmWave) spectrum that'll be compliant with 3GPP 5G New Radio (NR) standards. T-Mobile has said that it'll deploy its 5G coverage in 30 cities in 2018, including New York City, Dallas, Los Angeles, and Las Vegas. The carrier's first 5G-capable smartphones are expected to arrive in early 2019. The T-Mobile announcement can be viewed here.

Last year, when Donald Trump appointed Ajit Pai chairman of the F.C.C., Pai promised to "take aggressive action" to stamp out pirates. In early May, the Preventing Illegal Radio Abuse Through Enforcement, or PIRATE, Act was introduced in Congress; it would increase fines from a maximum of a hundred and forty-four thousand dollars to two million dollars. But the stations aren't going away, The New Yorker reports. From the article: Transmission equipment has only become cheaper and more sophisticated. "The problem, as I see it, is that the technology has gone beyond what the law has been able to do," said David Goren, a local resident who works as a producer on licensed radio shows. Between 87.9 and 92.1 FM, Goren counted eleven illegal stations, whose hosts mainly spoke Creole or accented English. Pirates, he said, "offer a kind of programming that their audiences depend on. Spiritual sustenance, news, immigration information, music created at home or in the new home, here."

CaptainDork shares a report from Bleeping Computer: Starting yesterday, there have been numerous reports of people's Windows computers being infected with something called "All-Radio 4.27 Portable." After researching this heavily today, it has been determined that seeing this program is a symptom of a much bigger problem on your computer. If your computer is suddenly displaying the above program, then your computer is infected with malware that installs rootkits, miners, information-stealing Trojans, and a program that is using your computer to send send out spam.

Unfortunately, while some security programs are able to remove parts of the infection, the rootkit component needs manual removal help. Due to this, if you are infected with this malware, I strongly suggest that you create a malware removal help topic in our Virus Removal forum in order to receive one-on-one help in cleaning your computer. Some of the VirusTotal scans associated with this infection have also indicated that an information stealing Trojan could have been installed by this malware bundle as well. Therefore, it is strongly suggested that you change your passwords using a clean machine if you had logged into any accounts while infected. 6/29/18: The story has been updated to specify that this malware campaign is targeting Windows computers.