Monthly Archives: September 2023

A review of the outdoor Planespotter antenna prototype

Many thanks to SWLing Post contributor, Zach R., who shares the following guest post:


A review of the outdoor Planespotter antenna prototype

When it comes to airband monitoring, the stock whip antennas that ship with desktop and portable scanners are not the greatest. They’re fine if you’re at an airport and only interested in communications specific to your immediate area, but if you are someone like me who lives well out from any major airport, quality listening in can be impossible without some help in the antenna department.

Ideally, you want something like a discone or similar for omnidirectional listening, mounted as high as possible. This is not always possible or practical, however. SWLing Post contributor Ron recently reviewed the indoor Planespotter antenna, and I have one as well that works better than any rubber ducky, and can be easily hidden away when company comes.

Recently, the creator has come out with a prototype outdoor model. It’s the same design as the indoor unit, but with a longer run (25 feet) of coax, terminating in a BNC connector.

Besides the longer cable, the only other obvious change is the antenna is house in a skinnier PVC tube from the indoor model. It’s also sealed at the bottom so moisture won’t get in.

It has the same small metal hook on top, suitable from hanging from various mounts. I’d like more mounting options, but the hook does make for quick installation and removal. The half-wave length isn’t ungainly to handle and if painted it could easily be mounted on the side of a home without many people noticing.

The indoor version definitely works best on the VHF air band and seems to roll off aggressively above and below that band. The outdoor version, in side-by-side tests, seemed to perform the same on the air band but notably better on the VHF public safety band. It also pulled in more UHF air band traffic than the indoor model, despite being basically the same design.

The new outdoor version is a good choice for someone looking for a simple, already assembled antenna that’s suitable for temporary use or stealth mounting.

Disclosure: The outdoor prototype was supplied to me for free in exchange for a review. While taking more photos of the antenna I noticed the weatherproofing had come undone from the bottom. Hopefully this issue can be addressed before the antenna goes into production.

[Zach R. is the owner and editor of the Alabama Broadcast Media Page.]

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Alan Roe’s A23 season guide to music on shortwave (version 6.0)

Many thanks to SWLing Post contributor, Alan Roe, who shares his A-23 (version 6.0) season guide to music on shortwave. Alan provides this amazing resource as a free PDF download:

Click here to download Music on Shortwave A-23 v6 (PDF)

As always, thank you for sharing your excellent guide, Alan!

This dedicated page will always have the latest version of Alan’s guide available for download.

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Transmitting through those short waves

Hi SWLing Post Community, FastRadioBurst 23 bringing you news of this week’s Imaginary Stations related broadcasts this Sunday 17th September 2023. At 2000 hrs UTC on 3975 & 6160 kHz we have DJ Frederick’s Shortwave Music Library where he picks out some choice classics and rarities not usually aired heard over the wireless. Expect all sorts of eclectic stuff.

Talking of wireless, at 2200 hrs UTC on 9395 kHz  via WRMI the Imaginary Stations crew bring you WTAB. A trip back in time where trebly voices and music flowed through horn type loudspeakers and when it got too loud a spare sock would dampen the sound. The days when radio stations always kept a box of rose thorns as back up needles for their gramophones too! Expect some old tunes from way back in the day!

For more information on the shows please email [email protected] and check out our old shows here.

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Radio Waves: Polish Trains Radio Hacked, Flawed Code, Radio Quiet Boxes, and EAS Reminder

Radio Waves:  Stories Making Waves in the World of Radio

Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors NT and Dennis Dura for the following tips:


Poland’s Railways Halted by a Simple Radio Hack (Gizmodo)

he Polish Railway’s radio system was hacked on Friday and Saturday, bringing 20 freight and passenger trains to an unprecedented standstill. The hack, believed to be carried out by Russia, took advantage of a critical flaw in the railway’s radio security system, with the issue reportedly restored within hours.

An investigation into the cyberattack is underway, and the Polish Press Agency (PAP) reported that the radio signals sent to stop the trains were interspersed with a recording of Russia’s national anthem and a speech by Russian President Vladimir Putin.

Poland is an important transportation hub that brings much-needed weapons supplied by Western countries and other aid to Ukraine amid the Russian invasion, and Senior Security Official Stanislaw Zaryn told PAP: “For the moment, we are ruling nothing out.” He continued: “We know that for some months there have been attempts to destabilize the Polish state. Such attempts have been undertaken by the Russian Federation in conjunction with Belarus.”

Train services were reportedly restored within hours and the Polish State Railways said in a statement that “there is no threat to rail passengers” and the cyberattack only caused “difficulties in the running of trains.” [Continue reading…]

Code Kept Secret for Years Reveals Its Flaw—a Backdoor (Wired)

A secret encryption cipher baked into radio systems used by critical infrastructure workers, police, and others around the world is finally seeing sunlight. Researchers say it isn’t pretty.

FOR MORE THAN 25 years, a technology used for critical data and voice radio communications around the world has been shrouded in secrecy to prevent anyone from closely scrutinizing its security properties for vulnerabilities. But now it’s finally getting a public airing thanks to a small group of researchers in the Netherlands who got their hands on its viscera and found serious flaws, including a deliberate backdoor.

The backdoor, known for years by vendors that sold the technology but not necessarily by customers, exists in an encryption algorithm baked into radios sold for commercial use in critical infrastructure. It’s used to transmit encrypted data and commands in pipelines, railways, the electric grid, mass transit, and freight trains. It would allow someone to snoop on communications to learn how a system works, then potentially send commands to the radios that could trigger blackouts, halt gas pipeline flows, or reroute trains.

Researchers found a second vulnerability in a different part of the same radio technology that is used in more specialized systems sold exclusively to police forces, prison personnel, military, intelligence agencies, and emergency services, such as the C2000 communication system used by Dutch police, fire brigades, ambulance services, and Ministry of Defense for mission-critical voice and data communications. The flaw would let someone decrypt encrypted voice and data communications and send fraudulent messages to spread misinformation or redirect personnel and forces during critical times. [Continue reading…]

‘Radio quiet’ boxes will now power world’s largest telescope (Interesting Engineering)

Engineers have designed and built the first set of 24 Small Modular Aggregation RFoF Trunk, or SMART boxes.

Radio telescopes detect faint radio signals arriving from distant cosmic sources.

As a result, it is critical that the site is as silent as possible, meaning that it should be devoid of noise caused by any gadgets, such as Wi-Fi, mobile phones, telescope machines, and other electronic equipment, in and around the radio facility.

Noise interference of any kind can distort or block out these signals, making astronomical studies extremely difficult.

This is one of the primary issues a multidisciplinary team of experts recently tackled by designing an advanced “SMART box” to electrically power the Square Kilometre Array Low Frequency (SKA-Low) telescope in Western Australia.

SKA-Low is part of the upcoming world’s largest ground-based astronomy facility that includes one other telescope, which has been constructed in South Africa.

“The SKA-Low telescope will receive exquisitely faint signals that have traveled across the universe for billions of years. To detect them, the SKA-Low telescope is being built in a pristine radio quiet zone far from the interference created by modern technology,” said Tom Booler, Program Lead for Engineering and Operations at the International Centre for Radio Astronomy Research (ICRAR) of the Curtin University.

“It’s so radio quiet at the observatory site that the biggest potential source of interference is the electronics like ours, due to the proximity to the antennas. That meant our project had to meet the strictest radio emission requirements across the entire Australian SKA site,” Booler added in the official release. [Continue reading…]

FCC Reminds Stations to Check EAS Readiness (Radio World)

The FCC is reminding U.S. radio stations and other EAS participants to make sure the upcoming national EAS test is accessible.

As we’ve reported, FEMA will transmit the nationwide test at 2:20 pm EDT on Oct. 4 using IPAWS, the Integrated Public Alert and Warning System.

To make sure it reaches the most people, the FCC’s Public Safety and Homeland Security Bureau has issued a reminder asking participants to make sure they’ve upgraded their EAS equipment software and firmware to the most recent version; ensured that their equipment can receive and process the National Periodic Test code and “six zeroes” national location code; and otherwise complied with FCC rules.

Here is the text of the planned EAS message:

“This is a nationwide test of the Emergency Alert System, issued by the Federal Emergency Management Agency, covering the United States from 14:20 to 14:50 hours ET. This is only a test. No action is required by the public.” [Continue reading…]


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New shortwave contest in November 2023

Many thanks to SWLing Post contributor, Frank, who shares the following information about an SWL contest he is sponsoring in November 2023.

Frank writes:

Hello, Congratulation for your great web site.

I you can you share this SWL contest on your web site ?

https://icomjapan.blogspot.com/2023/09/international-swl-contest-in-november.html

 Thank you

73 de Frank SWL F14368

Readers: Check out this link for more information or if you have questions about the contest. Thanks, Frank!

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Yoruba Nation Radio/TV: New Clandestine Station on HF

Many thanks to SWLing Post contributor, Paul Walker, who notes that a new clandestine station called Yoruba Nation Radio has been broadcasting on shortwave since August 5, 2023.

Here’s one of their first announcements about the broadcasts:

On the 5th of August 2023, Yoruba Nation Shortwave Radio will start broadcasting live. Share this page with Yoruba citizens both Home and Diaspora. Listen to us every Saturday and Sunday from 20.00pm to 21.00pm Nigeria time on (Shortwave Radio) Frequency 17735 kHz. Also, listen to our online Radio 24/7.

Yoruba Nation Radio/TV has a Facebook page and plans to have a home website as well (at time of posting, their domain name is parked). 

Paul notes that he’s been logging them 1900-2000 UTC every Saturday and Sunday via Wooferton UK to Nigeria.

Thanks for the tip, Paul!

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Can you identify the radios in “In Harm’s Way”–?

Many thanks to SWLing Post contributor, Dan Robinson, who writes:

From the 1965 classic In Harm’s Way about the U.S. Navy after the Pearl Harbor attack. In this scene, Patricia Neal is listening to a Tokyo Rose broadcast, and speaking to John Wayne. Neal asks Wayne “why can’t they jam that broadcast?” Can anyone identify the beautiful rig she’s listening to?

Other noteworthy actors in this great movie: Carroll O’Connor, Burgess Meredith, Kirk Douglas, Slim Pickens, Paula Prentiss, Henry Fonda, Larry Hagman, George Kennedy, Christopher George.

Here are two other receivers shown in same movie:

If you can identify the radios above, please comment!

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