Author Archives: Thomas

The return of Radio London on 1206 kHz (July 29 – August 14, 2023)

Many thanks to SWLing Post contributor, WD3C, who shares the following announcement:

RADIO PIRATE: The return of Big L Radio London on 1206 kHz, 24 hours a day, from July 29th to August 14th. Back with, in my pocket, a temporary license issued by OFCOM. This time Big L will be broadcasting not from a ship but from studios in a double decker red bus installed in Felixstowe’s Spa Pavilion car park on the seafront. This is an initiative of Ray Anderson, RadioFab and the Spa. Radio Caroline will no longer be the only pirate to have boarded for the 17 days of this special broadcast which will also broadcast all the hits of the years “Pirate Radio” with many famous DJs of the past!

You can tune in to 1206 kHz or find out more at www.biglradiolondon.co.uk ( RadioFab.com Facebook)

On August 12th, catch “Roger “Twiggy” Day’s Pirate Radio Hits Show” on stage at the Spa
Pavilion Felixstowe with Dave Berry, Vanity Fare and Chris Farlowe.

Many former DJ’s from pirate station are participating in the event. August 14 marks the 56th anniversary of the adoption of the “Maritime Offenses Act”. This will be, once again, the last day of broadcast of this ephemeral radio on 1206 khz.

Online and more info at www.biglradiolondon.co.uk
Subscribe to Radio Magazine it’s free!

Thank you for the tip!

Radio Waves: RTI Test Broadcast Today, Messages to North Korea, Exploring Space Weather Book, Vintage Radios at Auction, and WMLK

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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 Dennis Dura, Sten Odenwald, Paul Walker, and David Iurescia for the following tips:

RTI test broadcast July 1, 2023

Many thanks to David Iurescia who shares the following announcement (translated from French):

Dear listener,

The French service of Radio Taiwan International is pleased to inform you that during the month of August 2023, we will be broadcasting directly from the Tamsui transmission center in northern Taiwan to Europe and South Africa. north.

In order to better prepare for this radio activity in French, a test broadcast will be carried out on Saturday July 1 on short waves, at the following times and frequencies:

- Frequency 11995 kHz (325°), 5:00 p.m.-5:10 p.m. then 5:30-5:40 p.m., universal time
- Frequency 9545 kHz (315°), 6:00 p.m.-6:10 p.m., universal time
- Frequency 7240 kHz (315°), 6:20 p.m.-6:30 p.m., universal time
- Frequency 7250 kHz (315°), 6:40 p.m.-6:50 p.m., universal time

Your listening reports on these 10-minute segment tests will help us identify the two optimal frequencies for August’s “Live from Tamsui” broadcast under the best possible listening conditions.

Thank you for your valued input!

A special QSL card is produced for all the listening reports that you will send us by post, email to the French service or via the stations’s online form, both for the test broadcast and during the August broadcast.

Thank you for listening and for your loyalty.

Cordially,

French Service, RTI

[email protected]

Abductees’ relatives record radio messages for broadcast to North Korea (NHK)

Family members of Japanese nationals abducted by North Korea have recorded encouraging messages for a radio broadcast aimed at the country.

The messages were recorded in Tokyo for Free North Korea Radio, a shortwave broadcaster. Its daily radio program is run by a group of people who defected from the North to South Korea.

The abductees’ relatives called on their loved ones never to give up until they are rescued.

The leader of the relatives’ group, Yokota Takuya, is a younger brother of Yokota Megumi, who was abducted in 1977 at the age of 13. He asked his sister how she is doing. He also said he is sorry that she has had to spend a long time in North Korea without freedom.

He added that the relatives will never give up until they achieve the return of all the abductees.

His twin brother, Yokota Tetsuya, told his sister about their parents. He said that their father, who died three years ago, thought about rescuing his daughter every day.

He added that their 87-year-old mother often falls over, but is doing well. He vowed to get back his sister and asked her to stay healthy until she can be reunited with her mother.

Japanese Prime Minister Kishida Fumio said last month that he wants to start high-level talks under his direct control to hold a summit with North Korea at an early date.

Yokota Takuya said after the recording that he wants the Japanese government to continue its steady diplomatic efforts until all the abductees are returned.

He expressed hope that a Japan-North Korea summit can be held and that North Korean leader Kim Jong Un will decide to hand over all the abductees. [Read the full story and watch the video here…]

New Book: Exploring Space Weather with DIY Magnetometers (Amazon)

Many thanks to SWLing Post contributor, Sten Odenwald, who writes:

Hi Thomas!

Thanks so much for your contribution to the History of Space Weather book I published several years ago!

I have just published a new book I think you might be interested in. It’s called Exploring Space Weather with DIY Magnetometers, and it’s now available at amazon.com (see below). It provides step-by-step designs for building six sensitive instruments for under $60.00 that can measure real-time changes in Earth’s magnetic field.

If you are interested in such a building project, or you know of a family member, teacher, or even a student looking for a science fair project, this book will show you how to build these instruments. I also provide examples of storm events that were actually detected by each design so you can see what typical data looks like. For additional examples and updates, visit my blog page at http://sten.astronomycafe.net/diy-magnetometers/

Thanks again for your help!
Sten Odenwald
Astronomer

Click here to check out this book on Amazon.com (SWLing Post affiliate link).

Schulman Auction Radios

Many thanks to SWLing Post contributor, Dennis Dura, who notes that a number of vintage and late model radios are up for auction at Schulman’s:

WMLK on the air (Paul Walker)

Many thanks to SWLing Post contributor, Paul Walker, who shares the following tip:

It appears they are now operating at US night times now. For the longest time, as you may be aware, they were only on 9275 kHz during the day.

Sometime around mid last week, they were being reported on 15150 kHz as well.

And I finally logged them too.. nice signal on 15150 kHz here just after 0400!!

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Netflix shares trailer for “All the Light We Cannot See”

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Many thanks to a number of SWLing Post readers who have noted that Netflix has now published a trailer for “All the Light We Cannot See.”

Click here to view on YouTube.

All the Light We Cannot See is a book written by Anthony Doerr a favorite read among radio enthusiasts who also love a little WWII historical fiction. If you haven’t read this book, I can highly recommend it. Click here to read Greg’s book review.

The movie appears to have a star-studded cast and I do hope it does this amazing book justice! You’ve got a few months to read the book before the movie starts streaming on Netflix in November 2023.

Underground Sounds Worldwide: A New Shortwave Music Program Broadcasting on WRMI

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Many thanks to SWLing Post contributor, Kelsie, who writes:

Hi Thomas,

We have just launched a new bi-weekly music show on WRMI. Underground Sounds will be playing the freshest tracks by new and established independent artists from all around the world, together with the latest music news, exclusive performances, and interviews. The first show went out on June 25th, with the next due to go out on Sunday July 9th, with new shows occurring every other Sunday at 2100 UTC on 15770 kHz.

Thanks

DJ KEL / Underground Sounds Worldwide
https://undergroundsoundsworldwide.com
15770 kHz WRMI Radio Miami International

Thank you, Kelsie! We look forward to tuning in Underground Sounds! I’m putting you in my listening schedule.

July 2023 Program Schedule for Texas Radio Shortwave

Cycle 25 may peak sooner than expected

Solar Cycle 25 May Peak Much Sooner Than Expected

“In April 2019, the Solar Cycle 25 Prediction Panel, which is made up of dozens of scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA), released its forecast for Solar Cycle 25, suggesting that the solar maximum would likely begin sometime in 2025 and would be comparable in size to the maximum of Solar Cycle 24, which peaked unusually late between mid-2014 and early 2016 and was quite weak compared with past solar maximums.

But from the beginning, the forecast seemed off. For instance, the number of observed sunspots has been much higher than predicted.”

TomL notes:

To read the rest of the article go to web site link here:
https://www.livescience.com/space/the-sun/solar-maximum-could-hit-us-harder-and-sooner-than-we-thought-how-dangerous-will-the-suns-chaotic-peak-be

Not mentioned in the article are implications for a sooner-than-expected Peak may mean that the Peak will be about the same strength as Cycle 24 but with a shorter duration. It may also mean that the future Cycle 26 may be weaker than both 24 or 25, but that remains to be seen.

Guest Post: Here Come the Lithiums

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Many thanks to SWLing Post contributor, Bob Colegrove, who shares the following:

Power Play – Here Come the Lithiums

by Bob Colegrove

I have belonged to several radio-oriented user groups in recent years and can’t help noticing how often the subject of batteries comes up. It’s almost a sub-hobby within the hobby. There are a couple of reasons for this, first is the unending quest for the ultimate cost-effective, everlasting battery, and second, it’s a rare opportunity for most of us to tinker in an increasingly complex world of technology.

Lithium batteries offer a sustainable voltage output well into their discharge cycle and can deliver a higher rate of current than alkaline batteries. They are somewhat lighter in weight than alkaline batteries – 2.5 oz. versus 5 oz. for D-cells.

Considering the fast pace of technology, lithium batteries have been with us for a comparatively long time, this in the form of cell phone and camera power, not to mention a host of electric appliances. Most of these batteries have limited purpose, that is they have been developed and packaged for just a few applications, thus resulting in an incredible variety of sizes and shapes, and no doubt a host of frustrations due to obsolescence. It’s somewhat reminiscent of the early days of transistor radios which ran on a wide array of zinc-carbon batteries.

Perhaps I have been asleep at the wheel, but it has only come to my attention recently that lithium chemistry has begun to backfill the standard battery sizes we have long been familiar with, namely AAA, AA, C, D, and even the PP3 standard 9 volt.

I have been running along quite successfully for more than 10 years on AA NiMH technology on several portable radios. Although these run at a slightly lower cell voltage of 1.25 Vdc, the one-for-one substitution of these for alkaline chemistry has seldom been a problem in terms of performance. In most cases, newer radios are provided with an alkaline/NiMH-NiCad setting to compensate for the difference in voltage. Even the venerable Sony ICF SW7600GR, for which alkaline batteries are assumed, seems to operate equally well either way.

My problem has always been the larger power consumers running on D-cells – the Sony ICF 2010 and Grundig Satellit 800 to cite two examples. A fresh set of NiMH batteries put the 2010 on the cusp of poor performance. Lithium batteries having a sustainable single-cell voltage of 1.5 Vdc now provide a possible alternative to a steady diet of costly alkaline cells. Even more attractive, some are equipped with a USB-C connector and can be recharged without a dedicated charger.

In the figure above, a set of four lithium D cells are connected simultaneously through a 4-lead USB-C harness and USB charger (not shown). Many of the brands include the harness with a set of batteries. I have added a USB multimeter, which I find very useful to monitor the progress of the charge, but this is not necessary. This particular meter can also show accumulated capacity. However, it should be noted that, unless batteries are charged one at a time, charging rate and capacity will show the total values for the number of batteries being charged. I would also recommend that the USB charger be rated at least 3 amps. In the figure below, one of the USB-C leads is connected at the top of the battery. The built-in LED flashes during charge and remains on when the charge is complete.

Cost is an equally important consideration. There is a lot of hype in the marketing department about how many times these batteries can be recharged. The key compound preposition here is “up to,” and as long as they use those words, they can make the number anything they want to. That said, it simply won’t take more than a few cycles for the cost-benefit cusp to be reached in favor of lithium batteries.

I am just getting started with this. Although the batteries came highly recommended for the portable radio application, I can make no judgment at this time as to their ultimate quality or convenience. It just seems like the next logical way to go.

There are some things to remember when choosing lithium batteries. Not all lithium batteries are rechargeable, particularly smaller sizes. Some do not come with the built-in USB-C charging jack, so a separate charger intended for lithium batteries will be required. D size batteries are also available at 3.6 Vdc/cell. There may be other options, so watch out. Be sure to thoroughly check the features of any batteries you consider.

I would close by warning that lithium batteries come with safety caveats regarding their transport, handling, use, charging, and disposal. These precautions are all well stated in the literature, which should be followed with an abundance of caution. Of note is the fact that not all chargers support lithium batteries, and their capability should be checked as well.

Click here to check out these Lithium D Cells on Amazon.com (SWLing Post affiliate link), or explore other brands.