An anonymous reader quotes a report from Digital Trends: The Swedish government wants to make it impossible to be caught off guard by a speeding ambulance. Sure, their sirens are loud -- but soon they'll be able to take over your car's radio. Swedish students at the KTH Royal Institute of Technology in Stockholm have developed a way for emergency vehicles to transit radio signals to warn other vehicles of an approaching truck. It's called the EVAM System, according to Phys.org, and it's designed to send a signal over a specific FM radio band that'll interrupt music or radio and display a test message over the system's tuner display -- so long as the car is equipped with a Radio Data System (RDS). The number of crashes caused by muted sirens is on the rise, Florian Curinga, one of the students working on the project, said. That's because of improved sound insulation in cars. Emergency vehicles in Stockholm will begin testing the system this year. The EVAM System can also predict how far in advance the message needs to be broadcast, depending on traffic speed, according to Phys.org. It may also be helpful in warning drivers about upcoming accidents, the students added. EVAM will work on two-thirds of all vehicles on the road, Curinga said. All drivers need to do is have their radio systems turned on. If a message is broadcast then, they'll see it -- and hear it -- from the tuner.
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Longtime Slashdot reader Bruce Perens writes: David Rowe VK5DGR has been working on ultra-low-bandwidth digital voice codecs for years, and his latest quest has been to come up with a digital codec that would compete well with single-sideband modulation used by ham contesters to score the longest-distance communications using HF radio. A new codec records clear, but not hi-fi, voice in 700 bits per second -- that's 88 bytes per second. Connected to an already-existing Open Source digital modem, it might beat SSB. Obviously there are other uses for recording voice at ultra-low-bandwidth. Many smartphones could record your voice for your entire life using their existing storage. A single IP packet could carry 15 seconds of speech. Ultra-low-bandwidth codecs don't help conventional VoIP, though. The payload size for low-latency voice is only a few bytes, and the packet overhead will be at least 10 times that size.
Norway is set to become the first country to switch off its FM radio network next week, as it takes the unpopular leap to digital technology. Reuters reports: Critics say the government is rushing the move and many people may miss warnings on emergencies that have until now been broadcast via the radio. Of particular concern are the 2 million cars on Norway's roads that are not equipped with Digital Audio Broadcasting (DAB) receivers, they say. Sixty-six percent of Norwegians oppose switching off FM, with just 17 percent in favor and the rest undecided, according to an opinion poll published by the daily Dagbladet last month. Nevertheless, parliament gave the final go-ahead for the move last month, swayed by the fact that digital networks can carry more radio channels. By the end of the year, all national FM broadcasts will be closed in favor of DAB, which backers say carries less hiss and clearer sound throughout the large nation of 5 million people cut by fjords and mountains. Torvmark said cars were the "biggest challenge" - a good digital adapter for an FM car radio costs 1,500 Norwegian crowns ($174.70), he said. For the same cost, digital radio in Norway allows eight times more radio stations than FM. The current system of parallel FM and digital networks, each of which cost about 250 million crowns ($29 million), saps investments in programs.
New submitter Netdoctor writes: Fast Radio Bursts (FRB) are massively powerful short-lived radio bursts from far-away sources, and so far a number of theories exist on what generates them. Recently several were detected in the same general location, which adds to the mystery, as any of these pulses would be powerful enough to destroy a source. Since this group of FRBs were detected with single radio telescope dishes, the exact location was difficult to pinpoint. BBC reports here with results from the Very Large Array in New Mexico being trained on the source. From the report: "Outlining their work at a major conference, astronomers say they have now traced the source of one of these bursts to a different galaxy. Dr Chatterjee, from Cornell University, New York, and colleagues used a multi-antenna radio telescope called the Very Large Array (VLA), which had sufficient resolution to precisely determine the location of a flash known as FRB 121102. In 83 hours of observing time over six months in 2016, the VLA detected nine bursts from FRB 121102. In addition to detecting the bright bursts from FRB 121102, the team's observations also revealed an ongoing, persistent source of weaker radio emission in the same region. The flashes and the persistent source must be within 100 light-years of each other, and scientists think they are likely to be either the same object or physically associated with one another. He said some features of the radio source resembled those associated with large black holes. But he said these were typically found only in large galaxies."
Gandalf_the_Beardy quotes a report from The Register: The Register reports on the story of Jim Giercyk, an amateur radio enthusiast who had his copy of the popular Ham Radio Deluxe (HRD) software revoked after posting a negative review. Other radio hams have followed up with us regarding claims that this was not an isolated incident and others may have had their license keys blacklisted for being publicly critical of the company. And just to be clear: by blackballing keys, installed copies of the software stop working. Giercyk, a professional musician in South Carolina, U.S., says that after his dealings with HRD Software (which has since reinstated his software key) and the statement made by the developer's co-owner Dr Michael Carper, he takes issue with claims made by the company. Giercyk, aka N2SUB, told us on Tuesday: "The issue is not the refusal of service, the issue is that HRD disabled my software, and then offered to enable it in exchange for the removal of an online review of their product. It's extortion, not refusal of service." Giercyk also said that since he went public about his blacklisting last week, he has received messages from other users who have stories of their software keys being revoked by HRD without their knowledge for speaking up about having a bad support experience. A number of other readers pointed out a collection of bad reviews posted on hobbyist site eHam by customers who had their license keys blacklisted. HRD told us some of those users could have written their assessments after requesting a refund and deactivating their software, thus their licenses will appear revoked. Meanwhile, Reddit threads and follow-up discussions to Giercyk's catalyst forum post reveal similar stories of keys being revoked after critical comments about Ham Radio Deluxe have appeared online. Other sources allege some amateur radio forums have in the past deleted posts critical of HRD.
Georg Szalai, reporting for Hollywood Reporter: "The BBC makes the best radio in the world," says director general Tony Hall. British public broadcaster BBC plans to launch a "Netflix of the spoken word" to take its radio content beyond the U.K. Director general Tony Hall in a London speech on Wednesday said that the BBC plans to offer all of its audio content, in addition to its BBC World Service programming to people in foreign markets. He didn't immediately provide further details, including about whether the BBC would charge international users. The BBC is funded via a license fee covered by British taxpayers. "With our world-class content, we could use our current output and the richness of our archive to create a Netflix of the spoken word," the BBC quoted Hall as saying. "The BBC makes the best radio in the world. It is one of our crown jewels, and we have an extraordinary wealth of audio riches at our disposal." He added: "It's one of the things that will help the BBC carry the full weight of Britain's culture and values, knowledge and know-how to the world in the years ahead, and say something really important about modern Britain."
Microsoft has partnered with networking equipment manufacturer D-Link to deliver speedier Wi-Fi to rural communities around the world. From a report on ZDNet:Dubbed "Super Wi-Fi", the wireless infrastructure is set to be based on the 802.11af protocol, and will take advantage of unused bandwidth in the lower-frequency white spaces between television channel frequencies where signals travel further than at higher frequencies. A pilot of the first phase is commencing in an unnamed American state, with trials also slated to run in three other countries. "D-Link sees ourselves at the very heart of this kind of technical innovation and development. We also acknowledge that we have a role to play in helping all countries and future generations better connect," said Sydney-based D-Link managing director for ANZ Graeme Reardon. "Our goal is to use all of our 30 years' experience and expertise and our global footprint to help deliver Super Wi-Fi as a technological platform for growth to the world's underdeveloped regions."
An anonymous reader writes: Facebook's Connectivity Lab has announced that it has achieved data transmission rates of 20Gbps over the millimetre-wave (MMW) section of the radio spectrum; however, the transceiving stations need to be incredibly tightly calibrated to each other, with the team describing the margin for error as equivalent to 'a baseball pitcher aiming for a strike zone the size of a quarter'.
Let's face it, tracking down a lost bag at the airport is a pain-in-the-ass. While airlines will often compensate you with money and new clothes for your troubles, the experience is certainly not pleasant. Delta is now attempting to further reduce the number of lost bags through its real-time luggage tracker in the latest version of its mobile app. The Next Web reports: The feature apparently cost $50 million to build. It allows you to see where your stuff is -- provided that it's at one of the 84 airports that support Delta's new tracking tech. Here's how it works. All bags will get a Radio Frequency Identification (RFID) tag. This allows Delta to track them in real-time using radio waves. Scanners positioned throughout the baggage system will allow Delta to monitor where the bag is, and relay that information to the passenger. Delta has traditionally been one of the best airlines when it comes to handling baggage. During 2012, it lost only 200,000 bags. That sounds like a lot, but bear in mind it carried 98 million passengers during the same period. You can try the feature on your next Delta flight by grabbing the app from Google Play and the App Store.
An anonymous reader quotes a report from CNNMoney: Researchers at the MIT Computer Science and Artificial Intelligence Laboratory have developed a device that uses radio waves to detect whether someone is happy, sad, angry or excited. The breakthrough makes it easier to accomplish what scientists have tried to do for years with machines: sense human emotions. The researchers believe tracking a person's feelings is a step toward improving their overall emotional well-being. The technology isn't invasive; it works in the background without a person having to do anything, like wearing a device. The device called EQ-Radio, which was detailed in a paper published online Tuesday, resembles a shoebox, as of now. It works by bouncing wireless signals off a person. These signals are impacted by motion, such as breathing and heartbeats. When the heart pumps blood, a force is exerted onto our bodies, and the skin vibrates ever so slightly. After the radio waves are impacted by these vibrations, they return to the device. A computer then analyzes the signals to identify changes in heartbeat and breathing. The researchers demonstrated their system detects emotions on par with an electrocardiogram (EKG), a common wearable device medical professionals use to monitor the human heart. The machine's analysis of the radio waves relies on artificial intelligence, which learns how various heartbeats indicate certain emotions. As a part of the testing, the machine bounced radio waves off actors who recreated a range of emotions. The more emotions the machine experienced, the better it identified what signals, such as a fast heartbeat, gave away their true feelings. By monitoring radio waves reflected off people who are happy, the machine is exposed to certain signs -- such as heart rate or a type of breathing -- associated with being in good spirits.
An anonymous reader writes: Reportedly, in a national campaign aided by more than 30,000 airwave monitors, in over past six months, more than 500 sets of equipment for making unauthorised radio broadcasts were seized in China. The campaign, launched on February 15 by the State Council, resulted in 1,796 cases related to illegal radio stations, after 301,840 hours of monitoring from February to July, according to an online statement by the Ministry of Industry and Information Technology. The number of incidents was down by 50 per cent from April to August, the China Daily quoted the statement as saying. So-called pirate radios have appeared in most parts of China since 2015 and this "has been a channel for criminals to defraud and promote aphrodisiacs, along with counterfeit and poor-quality medicine," according to the Ministry of Public Security's Criminal Investigation Department. The operating cost of a pirate radio is low, but profit can be high. A pirate radio station that broadcasts advertisements for aphrodisiacs can pocket more than 70,000 yuan ($10,500) a month, with an overhead cost of no more than 10,000 yuan, investigators said in a post on Sina Weibo. It said most spare parts for broadcasting equipment can be bought on the internet.
An anonymous reader quotes a report from New Scientist: [The U.S. Air Force has plans to improve radio communication over long distances by detonating plasma bombs in the upper atmosphere using a fleet of micro satellites. It's not the first time we've tried to improve radio communication by tinkering with the ionosphere. HAARP, the High Frequency Active Auroral Research Program in Alaska, stimulates the ionosphere with radiation from ground-based antennas to produce radio-reflecting plasma.] Now the USAF wants to do this more efficiently, with tiny satellites -- such as CubeSats -- carrying large volumes of ionized gas directly into the ionosphere. As well as increasing the range of radio signals, the USAF says it wants to smooth out the effects of solar winds, which can knock out GPS, and also investigate the possibility of blocking communication from enemy satellites. [There are at least two major challenges. One is building a plasma generator small enough to fit on a CubeSat -- roughly 10 centimeters cubed. Then there's the problem of controlling exactly how the plasma will disperse once it is released. The USAF has awarded three contracts to teams who are sketching out ways to tackle the approach. The best proposal will be selected for a second phase in which plasma generators will be tested in vacuum chambers and exploratory space flights.]
mspohr writes: A few years ago, a Kickstarter was set up to develop a locator tag powered by free radio frequency (RF) energy harvested from the environment. This was called a scam here on Slashdot and was shut down before it was funded on Kickstarter. However, it now appears that the concept is not as far-fetched as some predicted. A UK company CleanSpace has developed a carbon monoxide (CO) sensor which is powered by free RF. A review of the product has been posted on YouTube. It uses Freevolt technology to keep a battery charged and the CO sensor running. Since they have several thousand of these devices collecting data, they do appear to work and it seems to be in the 'not a scam' department.
An anonymous reader writes: Astronomers at Cornell University predict based off estimates that alien contact is unlikely for another 1,500 years. MSN reports: "According to the astronomers, signals from Earth would need to reach half of all the solar systems in the Milky Way in order to be picked up by an intelligent life form. Given that signals from TV and radio were first sent into space as a byproduct of broadcasting 80 years ago, it will take around 1,500 more years for aliens to receive, decode and respond to the signals." A co-author of the paper who will present it at the American Astronomical Society's meeting on June 16, Evan Solomonides, said, "We haven't heard from aliens yet, as space is a big place -- but that doesn't mean no one is out there. It's possible to hear any time at all, but it becomes likely we will have heard around 1,500 years from now. Until then, it is possible that we appear to be alone -- even if we are not. But if we stop listening or looking, we may miss the signals. So we should keep looking." Stephen Hawking and Russian entrepreneur Yuri Milner announced a $100 million research program in April to send robotic probes the size of postage stamps to nearby stars within a generation.