Category Archives: Guest Posts

Whatever the weather

Hi to all of the SWLing community worldwide. Imaginary Stations are at it again transmitting over those airwaves this week with a couple of programmes for your listening pleasure. The first is on Saturday 19th April 2025 at 1100 hrs UTC on 6160 kHz and on Sunday 20th April 2025 at 0900/1300 hrs UTC on 6160 kHz and at 2000 UTC on 3975 kHz and 6160 kHz.

The programme (weather permitting of course), features the joys of meteorology. We have all our weather stations at the ready for our transmission that will bring you tunes about the weather, a bit of sunshine and rain and other atmospheric phenomena. So have your weathervane wired up as your antenna and keep a look out for strange cloud formations. If you love the weather, you’ll love The Weather Channel.

On Wednesday 23rd April 2025 at our new time of 0200 UTC via WRMI  we hoist the sails on the pirate ship MV Skybird again and bring you another audio voyage in the Free Radio Skybird series. Tune in and enjoy some “Music, speech and atmospheric effects”.

More on the Weather Channel here:

For more information on all our shows, please write to [email protected] and check out our old shows at our Mix cloud page here.

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Jim’s travelling on a flying carpet this week

A big hello to the SWLing community far and wide. Here’s what Imaginary Stations are transmitting over the airwaves this weekend. The first is on Saturday 12th April 2025 at 1100 hrs UTC on 6160 kHz and on Sunday 13th April 2025 at 0900/1300 hrs UTC on 6160 kHz and at 2000 UTC on 3975 kHz and 6160 kHz. It’s another James, Jamie, Jimi, Jimmie, Jimmy, Jimbo and Jacob special. Tune in at the allotted time and enjoy KJIM 2.

On Wednesday 16th April 2025 at our new time of 0200 UTC via WRMI  we bring you Flying Carpet Radio. The show is an exotic journey through the skies on what looks like a common floor covering made from thick woven fabric or even on a flying raft made from a collection of carpet tiles (depending on how fast you want to travel). Expect all sorts of exotica and underlaid with some good vibes as ever.

For more information on all our shows, please write to [email protected] and check out our old shows at our Mix cloud page here.

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Bob’s Radio Corner: Buttons, Knobs, and Switches

Source: The Great International Math on Keys Book, Texas Instruments Inc., Dallas, Texas, p. 4-7, 1976.

Pressing Buttons. Twirling Knobs and Throwing Switches

By Bob Colegrove

Move along.  Nothing informative to read here, just the wandering of an idle mind scheming with meandering fingers on a keyboard.  On the other hand, if your curiosity can’t be controlled, consider that a significant amount of enjoyment in this hobby is the mere operation of the radio – seeing what all the buttons, knobs, and switches do, both separately and in combination.  It’s always been this way.  Beginning in the Amplifiozoic Epoch there was continual rotation of the knobs.  This occurred before the discovery of ganged capacitors, when each circuit had to be tuned independently to resonate at the proper frequency.  Otherwise, nothing.

It could be quite confounding for a non-radiofile trying to break into the sport.  Just getting some sound out of a two-knob radio could be a challenge.  My late mother solved this problem on all our radios by painting a dab of red nail polish at the points on the dial where each local station came in.

The Complexities of Shortwave

Later, with the humble entry-level shortwave “set” there was conundrum in the way the bandspread interacted with the main tuning control, and the curious effect of the BFO switch.  Even the venerable Hallicrafters Company, which catered to the hams and SWLs of the time, recognized the problem. They tried to solve this by prescribing a default setting in installation and operating procedures for model S-40 receiver, The Hallicrafters Company, Chicago, USA, p. 4, 1946:

“NOTE. – Some of the control markings are in RED. This is an added feature incorporated for the convenience of the listener who is not familiar with radio terminology as an aid in setting the controls most used for the reception of standard broadcast stations.”

That was the nice way of saying it.  After many years, I still chuckle to myself thinking of an old ham radio mentor of mine who insensitively explained that the purpose of these markings was for certain members of the household who could not otherwise make the radio work.  On my S-40B, the “convenience” markings are white dots.

Modern Radios

Modern radios have many buttons, which can work in different ways.  A short press will do one thing while a long press will do something else.  Some buttons do one thing with the radio turned off and another thing with the radio turned on.  On many radios you can lock the buttons and knobs, in which case they won’t do anything.  You must get it right.

Hidden Features

Today, the possibilities with all these variables are boundless, even beyond the control of the manufacturers who incorporate the complex TEF6686 30-pin IC chips in their designs.  Qodosen has set the bar high by making a plethora of user-adjustable functions available on the DX-286.  An uncommonly informative 40-page manual has been included with each radio and is highly recommended as an essential tool to assist with its operation.

In recent years, Tecsun has capitalized on this by incorporating “hidden features” in some of their models; that is, their operation and even their very existence are not revealed in the manual.  In computer gaming parlance, these features are called “Easter eggs” for which one must hunt.  Originally, the inclusion of hidden features may not have been intentional, but with the introduction of the PL-880 in 2013 they became a veritable sensation, as testified by the countless owner postings on the PL-880 Yahoo users’ group of that time.  A prize of unbounded esteem and self-satisfaction went to the intrepid listener who discovered and solved a hidden feature.  This interest went on for several months as Tecsun tweaked the firmware and the “features” migrated somewhat.  But unfortunately, a spoiler has been introduced.  Hidden feature data sheets are now packaged with current models.  In case you are missing any, here is a sampling.

For the Tecsun PL-368 see https://swling.com/blog/2021/08/troys-tecsun-pl-368-hidden-features-quick-reference-sheet/

For the Tecsun PL-990 see https://swling.com/blog/2020/10/johns-pl-990-hidden-features-quick-reference-sheet/

For the Tecsun PL-880 see https://swling.com/blog/2019/10/40072/

For the Tecsun S-8800 see https://swling.com/blog/2018/08/bill-discovers-a-number-of-tecsun-s-8800-hidden-features/

SDR

The complexity of radio operation is compounded still further by the advent of SDR, wherein combinations of various hardware and software components result in a host of possibilities.  Features and their placement seem endless as they are distributed on multiple menus.  As my personal experience is limited to WebSDR, I leave the pursuit of this point to others.

Manual Power Generation

Finally, the inclusion of some elementary form of leverage and dexterity is present in some radios.  Isn’t the hand-powered crank on today’s emergency radio akin to the vintage treadle-operated transcription machine pictured at the beginning of this posting?  Perhaps we have come full circle.

Conclusion

Today’s radios are a sort of Rubik’s cube which can continually be manipulated to provide many hours of discovery and complement the listening and DXing experiences.  So, the next time you crawl underneath the headset and unconsciously tune to the object frequency, zero beat on the necessary sideband, and adjust the proper bandwidth and volume, reflect on all the time and practice it took you to develop this useful skill.

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What’s the recipe today Jim?

A big hello to all the SWLing community everywhere. Imaginary Stations have a couple of interesting programmes going out over the airwaves this week. The first is on Saturday 5th April 2025 at 1100 hrs UTC on 6160 kHz and also on Sunday 6th April 2025 at 0900/1300 hrs UTC on 6160 kHz and at 2000 UTC on 3975 kHz and 6160 kHz. It’s called KJIM and it’s a programme dedicated to all people called James, Jamie, Jimi, Jimmie, Jimmy, Jimbo and Jacob. Tune in at the alloted time and enjoy the Jim inspired show.

On Wednesday 9th April 2025 at our new time of 0200 UTC via WRMI  we bring you KFOG. We’re talking about a radio programme from out of the mist and from the depths of the sea. Tune in and enjoy the misty type vibes.

For more information on all our shows, please write to [email protected] and check out our old shows at our Mixcloud page here.

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Mysteries about the weather

A big hello to all the SWLing community. Imaginary Stations have a couple of great programmes going out on air this week. The first is on Saturday 29th March 2025 at 1100 hrs UTC on 6160 kHz and also on Sunday 30th March 2025 at 0900/1300 hrs UTC on 6160 kHz and at 2000 UTC on 3975 kHz and 6160 kHz. It’s WMMR – Mystery Mix Radio and it’s one of those “Guess what the theme is?’ specials. Once the show’s over, you send us what you think the theme of the show was and the nearest to the correct answer wins a special eQSL. Tune in and enjoy!

On Wednesday 2nd April 2025 at the new time of 0200 UTC via WRMI  we bring you a meteorology special with The Weather Channel. Expect some areas of low and high pressure on the show, all sorts of weather related tunes and the odd isobar thrown in for good measure. Also if goes well they’ll be a live set from the “weather-rock” pioneers Cirrocumulus. So get that barometer and thermometer at the ready and keep an umbrella at hand just in case and tune in for some forecasting fun.

For more information on all our shows, please write to [email protected] and check out our old shows at our Mixcloud page here.

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More keeping on from Radio Skybird and Radio Ace

Greetings to all the SWLing community, hope things are well, wherever you are. This week coming, Imaginary Stations hoist the sails on the pirate ship Skybird again and brings you another audio voyage in the Free Radio Skybird series and it’s the third and final planned broadcast of the station this year.

Tune in on Saturday 22nd March 2025 at 1200 hrs UTC on 6160 kHz and also on Sunday 23rd March 2025 at 1000/1400 hrs UTC on 6160 kHz and at 2100 UTC on 3975 kHz. As with last week’s show, expect some great tunes, onshore and offshore classics and lots of interesting bits and pieces as usual.

On Wednesday 26th March 2025 at the new time of 0200 UTC via WRMI  we bring you possibly what could be the finale of Radio Ace. Tune in for what may be the last time we hear from the great DJ Flash Frisbone. It may have a sad or a happy ending but Flash will be missed, tune in and find out what actually happens.

For more information on all our shows, please write to [email protected] and check out our old shows at our Mixcloud page here.

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Don Moore’s Photo Album:  Guatemala (Part Four) – To the Western Highlands

Many thanks to SWLing Post contributor Don Moore–noted author, traveler, and DXer–for the latest installment of his Photo Album guest post series:


Lago de Atitlán con el pueblo de Panajachel de fondo (Photo by Larissa Gomez via Wikimedia Commons)

Don Moore’s Photo Album:
Guatemala (Part Four) – To the Western Highlands

More of Don’s traveling DX stories can be found in his book Tales of a Vagabond DXer [SWLing Post affiliate link]. If you’ve already read his book and enjoyed it, do Don a favor and leave a review on Amazon.

If anyone deserves recognition as the first tourists to visit western Guatemala it would be the American John Lloyd Stephens and Englishman Frederick Catherwood. In the 1820s and 1830s, Stephens traveled extensively in Europe and the Middle East and published several books about his journeys. On one of those trips he met Catherwood, an accomplished artist who traveled around the Mediterranean making drawings of archaeological sites.

The pair decided to visit Central America after coming across accounts of ruins in the region by the Honduran explorer Juan Galindo. Their trip received official support when U.S. President Martin van Buren appointed Stephens as a special ambassador to Central America.  The two men wandered the region for several months in 1839-40 visiting known Mayan sites and rediscovering many others. Stephens wrote two books about their travels, Incidents of Travel in Central America, Chiapas and Yucatán and Incidents of Travel in Yucatán while Catherwood published a book of his drawings, Views of Ancient Monuments in Central America, Chiapas and Yucatan. All three books became immediate bestsellers.

Frederick Catherwood’s 1840 lithograph of the central plaza in Quetzaltenango, Guatemala. 

The three books introduced the Mayan civilization to the rest of the world for the first time, bringing new visitors to the region. Some came to do serious research. Others were just curious adventurers. But the numbers that came were small as only a few wealthy people had the time and money to journey to exotic places.

Then the 1960s brought a new kind of tourist – the hippie. Many young people in Europe and North America saw flaws in the materialism of their own societies and became interested in experiencing non-western cultures. The Mayan region of Guatemala was a perfect destination. It was exotic, relatively easy to get to, and cheap.

That qualification of cheap was especially important. The hippies weren’t big spenders staying in classy hotels and eating at pricey restaurants. They found rooms in basic hospedajes and ate everyday local food cooked by indigenous women at roadside comedores. In many ways that was better. The money went directly to local working people instead of to the wealthy owners of fancy establishments.

The 1960s and 1970s became the era of hippie tourism in Guatemala. Most of visitors went to the area around Lake Atitlán, drawn by the lake’s natural beauty and the region’s year-round springlike climate. The epicenter of it all was the little lakeshore village of Panajachel.

Clouds of War

To anyone wandering the shoreline of Lake Atitlán in the mid-1970s, Guatemala seemed to be a peaceful place. In reality, a guerilla war was raging just a hundred kilometers away. In 1954, a CIA-sponsored coup overthrew Guatemala’s elected government and ushered in a long period of repressive military regimes. With the military showing no signs of relinquishing power, around 1965 a few leftist activists went into the remote mountains of northern Huehuetenango and Quiché departments with hopes of repeating Fidel Castro’s success in Cuba.

By all appearances, this should have been a minor footnote in Guatemala’s history. The would-be revolutionaries, after all, were city people without the skills to survive in the remote mountain highlands. But they recruited a few Mayans to their movement and then a few more until the Mayans dominated the guerilla movement. Yet the Mayans were never guided by ideology. The guerilla movement was a way of fighting back against centuries of repression, discrimination, and poverty. As one observer put it, “They’re Communists because of their stomachs, not because of their heads.”

As the guerilla movement grew the combat zone gradually moved south and into other regions. And the war became less a political revolution than an ethnic conflict. The military was dominated by Spanish-speaking ladinos who knew nothing of Mayan culture or the Mayan languages. All Mayans were seen as potential enemies, as was anyone who attempted to improve the Mayans’ lives. That lead to the formation of military-run death squads which targeted small town mayors, teachers, social workers, church leaders, and anyone else who dared to speak up. By 1981 over two hundred non-combatants were being kidnapped, killed, and dumped by the side of the road every month.

In 1976 the Lake Atitlán region had been seen as a peaceful place. A few years later the combination of active military death squads in the villages along the lake and a widening guerilla war elsewhere had put an end to that image. The era of hippie tourism in Guatemala was over. Continue reading

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