Shortwave radio has a charm all its own: part history, part mystery, and a whole lot of tech nostalgia. The Hallicrafters S-53A is a prime example of mid-century engineering, but when you get your hands on one, chances are it won’t be in mint condition. Which was exactly the case for this restoration project by [Ken’s Lab], where the biggest challenge wasn’t fried capacitors or burned-out tubes, but a stubborn band selector switch that refused to budge.

What made it come to this point? The answer is: time, oxidation, and old-school metal tolerances. Instead of forcing it (and risking a very bad day), [Ken]’s repair involved careful disassembly, a strategic application of lubricant, and a bit of patience. As the switch started to free up, another pleasant surprise emerged: all the tubes were original Hallicrafters stock. A rare find, and a solid reason to get this radio working without unnecessary modifications. Because some day, owning a shortwave radio could be a good decision.

Once powered up, the receiver sprang to life, picking up shortwave stations loud and clear. Hallicrafters’ legendary durability proved itself once before, in this fix that we covered last year. It’s a reminder that sometimes, the best repairs aren’t about drastic changes, but small, well-placed fixes.

What golden oldie did you manage to fix up?

Making a multi-band amateur radio transceiver has always been a somewhat challenging project, and making one that also supported different modes would for many years have been of almost impossible complexity best reserved for expensive commercial projects. [Bob W7PUA] has tackled both in the form of a portable 10-band multi-mode unit, and we can honestly say he’s done a very good job indeed.

As you might expect in 2025 it’s a software defined radio (SDR), but to show how powerful the silicon available today is, it’s all implemented on a microcontroller. There’s a Teensy 4 with an audio codec board that does all the signal processing heavy lifting, and an RF board that takes care of the I/Q mixing and the analogue stuff.

Band switching is handled using a technique from the past; interchangeable plug-in coil and filter units, that do an effective job. The result is a modestly-powered but extremely portable rig that doesn’t look to have broken the bank, and since the write-up goes into detail on the software side we hope it might inform other SDR projects too. We might have gone for old-school embossed Dymo labels on that brushed aluminium case just for retro appeal, but we can’t fault it.

It’s not the first time we’ve looked at a small multi-band SDR here, but we think this one ups the game somewhat.

Thanks [Pete] for the tip!

We hear a lot about how ham radio isn’t what it used to be. But what was it like? Well, the ARRL’s film “The Ham’s Wide World” shows a snapshot of the radio hobby in the 1960s, which you can watch below. The narrator is no other than the famous ham [Arthur Godfrey] and also features fellow ham and U.S. Senator [Barry Goldwater]. But the real stars of the show are all the vintage gear: Heathkit, Swan, and a very oddly placed Drake.

The story starts with a QSO between a Mexican grocer and a U.S. teenager. But it quickly turns to a Field Day event. Since the film is from the ARRL, the terminology and explanations make sense. You’ll hear real Morse code and accurate ham lingo.

Is ham radio really different today? Truthfully, not so much. Hams still talk to people worldwide and set up mobile and portable stations. Sure, hams use different modes in addition to voice. There are many options that weren’t available to the hams of the 1960s, but many people still work with old gear and older modes and enjoy newer things like microwave communications, satellite work, and even merging radio with the Internet.

In a case of history repeating itself, there is an example of hams providing communications during a California wildfire. Hams still provide emergency communication in quite a few situations. It is hard to remember that before the advent of cell phones, a significant thing hams like [Barry Goldwater] did was to connect servicemen and scientists overseas to their families via a “phone patch.” Not much of that is happening today, of course, but you can still listen in to ham radio contacts that are partially over the Internet right in your web browser.

Just when you thought the saga of the Bitcoin wallet lost in a Welsh landfill was over, another chapter of the story appears to be starting. Regular readers will recall the years-long efforts of Bitcoin early adopter James Howells to recover a hard drive tossed out by his ex back in 2013. The disk, which contains a wallet holding about 8,000 Bitcoin, is presumed to be in a landfill overseen by the city council of Newport, which denied every request by Howells to gain access to the dump. The matter looked well and truly settled (last item) once a High Court judge weighed in. But the announcement that the Newport Council plans to cap and close the landfill this fiscal year and turn part of it into a solar farm has rekindled his efforts.

Howells and his investment partners have expressed interest in buying the property as-is, in the hopes of recovering the $780 million-ish fortune. We don’t think much of their odds, especially given the consistently negative responses he’s gotten over the last twelve years. Howells apparently doesn’t fancy his odds much either, since the Council’s argument that closing the landfill to allow him to search would cause harm to the people of Newport was seemingly made while they were actively planning the closure. It sure seems like something foul is afoot, aside from the trove of dirty diapers Howells seeks to acquire, of course.

When all else fails, blame the monkey. The entire nation of Sri Lanka suffered a blackout last Sunday, with a hapless monkey being fingered as the guilty party. The outage began when a transformer at a substation south of the capital city of Colombo went offline. Unconfirmed reports are that a troop of monkeys was fighting, as monkeys do, and unadvisedly brought their tussle over the fence and into the substation yard. At some point, one of the warring animals sought the high ground on top of a transformer, with predictable results. How turning one monkey into air pollution managed to bring down an entire country’s grid is another question entirely.

From the enshittification files comes this horrifying story of in-dashboard ads. Stellantis, maker of Jeep, Dodge, Chrysler, and other brands that can reliably be counted upon to be littered with bad grounds, has decided to start putting full-screen pop-up advertisements on infotainment systems. As if that’s not atrocious enough, the ads will run not just when the car is first started, but every time the vehicle comes to a stop in traffic. The ads will hawk things like extended warranties, at least initially, but we predict it won’t be long before other upsell attempts are made. It would be pretty easy to pull in other data to customize ads, such as an offer to unlock heated seats if the outside temperature gets a little chilly, or even flog a pumpkin spice latte when the GPS shows you’re near a Starbucks. The possibilities are endless, and endlessly revolting, because if one car company does it, the rest will quickly follow. Ad-blocking wizards, this may be your next big target.

And finally, calling all hams, or at least those of us with an interest in digital modes. Our own Al Williams will be making an appearance on the DMR Tech Net to talk about his Hackaday recent article on Digital Mobile Radio. The discussion will be on Monday, February 17 at 00:30 UTC (19:30 EST), on Brandmeister talk group 31266. If you’ve got a DMR-capable radio, DMR Tech Net has a handy guide to getting the talk group into your code plug. If none of that makes any sense, relax — you can still tune in online using this link and the Player button in the upper right. Or, if ham radio isn’t your thing, Al will be making a second appearance the next night but on a Zoom call to discuss “How to Become Rich and (almost) Famous on Hackaday,” which is his collection of tips and tricks for getting your project to catch a Hackaday writer’s eye.

January 9 ended up being a very expensive day for a Culver City, California man after he pleaded guilty to recklessly operating a drone during the height of the Pacific Palisades wildfire. We covered this story a bit when it happened (second item), which resulted in the drone striking and damaging the leading edge of a Canadian “Super Scooper” plane that was trying to fight the fire. Peter Tripp Akemann, 56, admitted to taking the opportunity to go to the top of a parking garage in Santa Monica and launching his drone to get a better view of the action to the northwest. Unfortunately, the drone got about 2,500 meters away, far beyond visual range and, as it turns out, directly in the path of the planes refilling their tanks by skimming along the waters off Malibu. The agreement between Akemann and federal prosecutors calls for a guilty plea along with full restitution to the government of Quebec, which owns the damaged plane, plus the costs of repair. Akemann needs to write a check for $65,169 plus perform 150 hours of community service related to the relief effort for the fire’s victims. Expensive, yes, but probably better than the year in federal prison such an offense could have earned him.

Another story we’ve been following for a while is the United States government’s effort to mandate that every car sold here comes equipped with an AM radio. The argument is that broadcasters, at the government’s behest, have devoted a massive amount of time and money to bulletproofing AM radio, up to and including providing apocalypse-proof bunkers for selected stations, making AM radio a vital part of the emergency communications infrastructure. Car manufacturers, however, have been routinely deleting AM receivers from their infotainment products, arguing that nobody but boomers listen to AM radio in the car anymore. This resulted in the “AM Radio for Every Vehicle Act,” which enjoyed some support the first time it was introduced but still failed to pass. The bill has been reintroduced and appears to be on a fast track to approval, both in the Senate and the House, where a companion bill was introduced this week. As for the “AM is dead” argument, the Geerling boys put the lie to that by noting that the Arbitron ratings for AM stations around Los Angeles spiked dramatically during the recent wildfires. AM might not be the first choice for entertainment anymore, but while things start getting real, people know where to go.

Most of us are probably familiar with the concept of a honeypot, which is a system set up to entice black hat hackers with the promise of juicy information but instead traps them. It’s a time-honored security tactic, but one that relies on human traits like greed and laziness to work. Protecting yourself against non-human attacks, like those coming from bots trying to train large language models on your content, is a different story. That’s where you might want to look at something like Nepenthes, a tarpit service intended to slow down and confuse the hell out of LLM bots. Named after a genus of carnivorous pitcher plants, Nepenthes traps bots with a two-pronged attack. First, the service generates a randomized but deterministic wall of text that almost but not quite reads like sensible English. It also populates a bunch of links for the bots to follow, all of which point right back to the same service, generating another page of nonsense text and self-referential links. Ingeniously devious; use with caution, of course.

When was the last time you actually read a Terms of Service document? If you’re like most of us, the closest you’ve ever come is the few occasions where you’ve got to scroll to the bottom of a text window before the “Accept Terms” button is enabled. We all know it’s not good to agree to something legally binding without reading it, but who has time to trawl through all that legalese? Nobody we know, which is where ToS; DR comes in. “Terms of Service; Didn’t Read” does the heavy lifting of ToS and EULAs for you, providing a summary of what you’re agreeing to as well as an overall grade from A to E, with E being the lowest. Refreshingly, the summaries and ratings are not performed by some LLM but rather by volunteer reviewers, who pore over the details so you don’t have to. Talk about taking one for the team.

And finally, how many continents do you think there are? Most of us were taught that there are seven, which would probably come as a surprise to an impartial extraterrestrial, who would probably say there’s a huge continent in one hemisphere, a smaller one with a really skinny section in the other hemisphere, the snowy one at the bottom, and a bunch of big islands. That’s not how geologists see things, though, and new research into plate tectonics suggests that the real number might be six continents. So which continent is getting the Pluto treatment? Geologists previously believed that the European plate fully separated from the North American plate 52 million years ago, but recent undersea observations in the arc connecting Greenland, Iceland, and the Faroe Islands suggest that the plate is still pulling apart. That would make Europe and North America one massive continent, at least tectonically. This is far from a done deal, of course; more measurements will reveal if the crust under the ocean is still stretching out, which would support the hypothesis. In the meantime, Europe, enjoy your continental status while you still can.

When the first artificial satellite, Sputnik, was put into orbit around Earth, anyone in the path of the satellite could receive the beeps transmitted by the satellite provided they had some simple radio equipment. Of course, there was no two-way communication with this satellite, and it only lasted a few weeks before its batteries died. Here in the future, though, there are many more satellites in orbit and a few are specifically meant for ham radio operators. And, like the ’50s, it doesn’t take too much specialized equipment to communicate with them, although now that communication can be two-way.

The first step in this guide by [W2PAK] is to know where these satellites are in the sky. The simplest way to do that is to use a smartphone app called GoSatWatch and, when configured for a specific location, shows the satellites currently overhead. After that it’s time to break out the radio gear, which can be surprisingly inexpensive. A dual-band handheld is required since satellite uplink and downlink can be on different bands, and the antenna can be made from simple parts as well as [W2PAK] demonstrates in a separate video. Combined, this can easily be done for less than $100. [W2PAK] also goes over the proper format and etiquette for a satellite contact as well, so a new operator can pick it up quickly.

Using satellites as repeaters opens up a lot of capabilities when compared to terrestrial communications. Especially for operators with entry-level licenses who are restricted to mostly VHF and UHF, it adds a challenge as well as significantly increased range compared to ground-based repeaters and line-of-sight communications. There are plenty of activities around satellites that don’t require a license at all, too, like this project which downloads weather imagery from weather satellites.