Category Archives: Guest Posts

Carlos Visits the Studios of UFRGS Radio

Visiting the studios of the University Radio of Rio Grande do Sul, Porto Alegre, Brazil

by Carlos Latuff

On the morning of Thursday, February 27, 2025, I visited the studios of the radio station of the Federal University of Rio Grande do Sul (UFRGS in Portuguese) in Porto Alegre, Brazil. Founded in 1950, it’s the first broadcaster in Brazil operated by a university, which currently broadcasts on medium wave (AM) and over the Internet (streaming): https://www.ufrgs.br/radio/ao-vivo/

Headquarters of the UFRGS radio studios in Porto Alegre, Brazil.

The programming focuses mainly on classical music, but it also has programs of other musical styles. Despite the technical, bureaucratic and financial difficulties (a typical scenario of state radio stations in Brazil), the UFRGS Radio has been operating thanks to the efforts of its team. One of the things that catches my attention at this station is the news bulletin, broadcast on weekdays at 12:00 p.m. local time, presented by Mrs. Claudia Rocca.

News bulletin from UFRGS Radio, voiced by Mrs. Cláudia Rocca.

The bulletin is 10 minutes long and brings local, national and international news, some of which are suitable for my already traditional illustrated radio listening.

According to the station’s director, Mr. Claudio Roberto Dornelles Remião, the UFRGS radio station, like most AM radio stations in Brazil, will migrate to FM, but there’s still no set deadline.

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Is that whistling I hear, my dear?

We at Imaginary Stations have another whistling and in gainful employment combination show coming out over the airwaves this weekend. It’s called WSTL—WORK 2 of course. It’s on Saturday 1st March 2025 at 1200 hrs UTC on 6160 kHz and also on Sunday 2nd March 2025 at 1000/1400 hrs UTC on 6160 kHz and at 2100 UTC on 3975 kHz brought to you via Shortwave Gold

We hope in your part of the world you will get a “clean as a whistle” signal so you can enjoy our show which is a cracker if we say so ourselves. So change into your overalls/coveralls or even an interview whistle (AKA whistle and flute in cockney rhyming slang), put on those eye and ear protectors and slip into some soft steel toe-capped boots and listen in at the alloted time and enjoy some fine tunes that will bring a smile to your face.

Then on Wednesday 5th March 2025 at 0300 UTC via WRMI we bring you WRBW the station that has the motto “Where rainbows connect us all”. Expect music containing all the colours of the rainbow and tunes from the colour swatch book of hits. If all goes well they’ll be an interview with Roy G. Biv himself. Tune in and enjoy the Kaleidoscopic vibes.

For more information on all our shows, please write to imaginarystations@gmail.com and check out our old shows at our Mixcloud page here.

FastRadioBurst 23

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Whistling on the shortwaves

Do you enjoy whistling while you’re at work? We at Imaginary Stations do too and our next programme is the combo show called WSTL—WORK, brought to you by the powers of shortwave radio via Shortwave Gold. The show goes out on Saturday 22nd February 2025 at 1200 hrs UTC on 6160 kHz and also on Sunday 23rd February 2025 at 1000/1400 hrs UTC on 6160 kHz and at 2100 UTC on 3975 kHz.

Expect lots of whistling tunes to keep you going through those shifts at work, ones to keep the Robin in your garden amused if you have the radio on while maintaining the flower beds and songs to make you feel like the wandering whistler (if you’re tuned in whilst on a treadmill). And as we have just read, “People whistle to communicate feelings which cannot be readily expressed in words.” Tune in and receive those (shortwave) feelings.

We also have another episode of Radio Ace featuring the fantastic adventures of the ground/rule breaking DJ Flash Frisbone alongside all sorts of interesting stuff on Wednesday 26th February 2025 at 0300 UTC via WRMI. Tune in as Radio is Ace!

Also we need your help again to cover our production and transmission costs. Even if you can only spare a couple of dollars it still helps to bring our shows to the shortwaves. So please donate to paypal.me/DJFrederick. A heartfelt thanks from all at Imaginary Stations goes out to all the folks who have sent us generous donations in the past!

For more information on all our shows, please write to imaginarystations@gmail.com and check out our old shows at our Mixcloud page here.

FastRadioBurst 23

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Don Moore’s Photo Album:  Guatemala (Part Two) – Guatemala City

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


Image Source: Wikimedia Commons

Don Moore’s Photo Album:  Guatemala (Part Two) – Guatemala City

by Don Moore

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.

Guatemala City, the country’s capital, is the political, economic, and social hub of the country. The next largest city, Quetzaltenango, is less than a fifth as big. Guatemala City also forms a pivot point dividing the country. The departments to the west and the Verapaz region to the north are heavily indigenous. Quiché department is named after the country’s largest Mayan group. The Pacific departments to the south and those to the east are mostly populated by Spanish-speaking ladinos, which is what mestizos of mixed Spanish and indigenous heritage are called in Guatemala. It’s the ladinos and Guatemala’s small European-descended upper class who rule the country. Although the Mayans and a few smaller groups represent half of Guatemala’s population, the country has never had an indigenous president. That’s not where the power lies.

While I was working in Honduras, all of my visits to Guatemala included a few days in Guatemala City. It wouldn’t make anyone’s lists of Latin America’s best capitals but I always enjoyed returning. It felt like a city. Honduras’ capital of Tegucigalpa felt like an overgrown small town.

Guatemala City had a very diverse radio scene with stations programming for all the segments of the population. You could tune in everything from Guatemalan marimba music to English-language rock to Spanish-language romantic pop to Mexican ranchera to Argentine tango. There was even a commercial classical music station on medium wave. Several of the stations – Radio Nuevo Mundo comes to mind – had very professional news departments. And three of Guatemala City’s radio stations broadcast on shortwave.

But for me the best part of visiting Guatemala City wasn’t the shopping or the museums or even visiting the radio stations. It was getting to see my friends in the Guatemala DX Club.

Guatemala DX Club

In early 1983 I connected with the Guatemala DX Club through Radio Netherlands’ Spanish language DX program, Radio Enlace.  I first got together with them on my second visit to Guatemala in June 1983 and then made a point of visiting them every time I came to the city. The GDXC had several dozen members, mostly in Guatemala City. Only about eight or ten regularly participated in club events and those are the ones I met. The club had occasional meetings, sometimes organized visits to radio stations, and published an annual newsletter. They also produced a weekly fifteen-minute DX program on La Voz de Guatemala.

This photo was taken during my last visit in December 1987. In the back row are Carlos Zipfel Valencia, Jorge Luis Álvarez, and Edgar Oliva. Me and Ralf Gruner are seated in front.

Edgar was an official monitor for Deutsche Welle and had a beautiful huge Grundig receiver that the station had gifted to him. It had been sent by diplomatic pouch to the West German embassy where he had picked it up in person.

Carlos’ father, Carlos Zipfel y García, was a well-known Guatemalan writer but Carlos was more interested in the spoken word of radio. After getting a communications degree he received professional training through programs run by Radio Netherlands and Deutsche Welle and pursued a career in broadcast journalism and management. At different times he’s served as a producer for La Voz de Guatemala, director of Radio Universidad de San Carlos, and in various roles for several public and non-government organizations such as the Federation of Guatemalan Radio Schools.

I’ve always liked the GDXC pennant. It was intentionally designed to point left so that it would easily fit on the wall between the usual right-pointing radio station pennants. Only a DXer would think of doing that! The design features Guatemala’s national bird, the quetzal, which is known for its long tail feathers.

La Voz de Guatemala

During my first visit with the club, Carlos used his day off to take me to visit the radio station he was working at plus several more medium wave and FM stations. He already had many professional contacts so I had some very memorable station tours. Carlos also used his press credentials to get me a private tour of part of the Palacio Verde, or presidential palace.

The station I was most interested in seeing was the official government radio station, TGW La Voz de Guatemala, also sometimes called Radio Nacional de Guatemala. I had a very long visit there as Carlos, of course, had connections. It was he who produced the club’s weekly DX program on TGW.

The Estudio Maya was a spacious room where live marimba music concerts were broadcast each week. The station even had its own handmade marimba. The use of the name Estudio Maya is interesting. Guatemala embraces the historical image and importance of the Mayans while at the same time ignoring the present-day Mayan population. Half of Guatemala’s population speak Mayan languages but the national radio station only broadcast in Spanish.

Visiting radio stations usually includes collecting souvenirs and TGW didn’t disappoint. Here are several items from the station’s 50th anniversary in 1980. I also picked up several QSLs signed and sealed not just by the head station producer but also by Carlos on behalf of the Guatemala DX Club.

TGW La Voz de Guatemala, 640 kHz, as recorded in Guatemala City in June 1983:

Audio Player

A Musical Interlude

The marimba is Guatemala’s national musical instrument and if you ever heard one of Guatemala’s shortwave stations you surely heard the music. Like the banjo, the marimba is an instrument that always sounds happy. It’s impossible to play a sad song on one. The instrument is like a xylophone but is made of wood. Although smaller ones do exist, a true marimba requires seven musicians playing in unison. A live concert is an amazing sight. Continue reading

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Bigfoot seen in the local supermarket twice

Good day all SWLing Post community! FastRadioBurst 23 here with this week’s Imaginary Stations transmissions.

On Saturday 15th February 2025 at 1200 hrs UTC on 6160 kHz and also on Sunday 16th February 2025 at 1000/1400 hrs UTC on 6160 kHz and at 2100 UTC on 3975 kHz via Shortwave Gold we’ll be bringing you another Beatles to Bigfoot. It’s a mixture of Lennon & McCartney, songs about Sasquatch and aliens if you remember the show from last week. We bring you more of the same!

Then on Wednesday 19th February 2025 at 0300 UTC via WRMI we bring you KMRT, your official shortwave supermarket station. Expect short-term discounts that are indicated by a flashing blue light, a book at bedtime (if it is bedtime when you’re tuning in) from the thriller called “A chance meeting in the Middle Aisle”, tips from an ex-shelf stacker and much much more. Tune in and bag yourself a bargain!

Also we need your help again to cover our production and transmission costs. Even if you can only spare a couple of dollars it still helps to bring our shows to the shortwaves. So please donate to paypal.me/DJFrederick. A heartfelt thanks from all at Imaginary Stations goes out to all the folks who have sent us generous donations in the past!

For more information on all our shows, please write to imaginarystations@gmail.com and check out our old shows at our Mixcloud page here.

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Carlos Explores the Sony ICR-N20: A Unique Radio Nikkei Experience from Brazil

Many thanks to SWLing Post contributor, Carlos Latuff, who shares the following guest post:


SONY ICR-N20 Quick Review

by Carlos Latuff

In the last century, several Japanese electronics manufacturers such as Sony, National-Panasonic, Hitachi, and Sanyo produced radio receivers aimed at the Japanese public and which had a peculiar characteristic: they came with crystal lock, preset frequencies from Radio Nikkei, which in the past was known by the acronym NSB (Nihon Shortwave Broadcasting) or “Radio Tampa”. For more information about this station, check out this post.

One of these models is the Sony ICR-N20, which, based on the date of the instruction manual I found on the Internet, must have been produced in the late 1990s. The device measures 150 mm × 75 mm × 36 mm and weighs 400 grams (with batteries). It has a 6.6 cm speaker (8 ohms) and a headphone output.

This device is analog and operates on the following frequencies:

Shortwave:

  • NSB1 3.925 MHz, 6.055 MHz, 9.595 MHz
  • NSB2 3.945 MHz, 6.115 MHz, 9.760 MHz
  • MW: 530 kHz ? 1.605 kHz

Currently, Radio Nikkei only broadcasts on two frequencies: 6.055 and 6.115 MHz.

It has a 7-segment telescopic antenna. No input for an external antenna.

It works on electrical power (DC 4.5 V) or 3 AA batteries.

As it’s primarily intended for the Japanese market, the buttons and dial panel are written in Japanese.

I have no complaints about the selectivity and sensitivity of the Sony ICR-N20 when it comes to medium waves. At night, in Porto Alegre (in the extreme south of Brazil), it was possible to receive (indoor) stations from Uruguay, Paraguay and Argentina, but due to its proximity to these countries, this is not such a difficult task. It’s not a receiver for the most ardent DX fan, but it does a good job of being a radio for regular, everyday listening.

In the case of shortwave, I was able to receive the signal from Radio Nikkei 1 and 2 close to the Guaiba waterfront. The signal from active frequencies is weak, but audible. With favorable propagation, the reception is sometimes surprising. Following the instructions in the instruction manual, I used a long wire antenna for better reception.

In my region, the most favorable propagation window is between 08:45 and 09:15 (UTC), and yesterday, for example, February 7, 2025, the signal reached well until 10:00 (UTC). On other frequencies, it is even possible to hear other stations, such as China Radio International, and even amateur radio interference. Remember that this is not a radio receiver with all shortwave frequency bands, but only those in which Nikkei Radio 1 and 2 operate.

Here are some of the listenings made with this receiver.

Radio Nikkei 1: February 7, 2025

Radio Nikkei 1: February 7, 2025

Radio Nikkei 1: February 4, 2025

Listening Session Video

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What’s in the Box? Bob Colegrove Investigates the Forgotten Extras of Your Radio

What’s in the Box?

Itemized by Bob Colegrove

Not one to throw anything away, I tend to save ‘the box it came in’ for many new purchases.  The other day I decided to organize all my radio boxes.  Besides the radios themselves, they usually contain a selection of “goodies,” which can include, cases, power adapters, USB cables, batteries, earbuds, antennas, manuals, and so forth.

I generally do not use much that is included in the box.  Over time, however, some of the paraphernalia has gotten scattered around, and my recent effort was intended to corral and sort the accessories.  My experience is itemized below.

Cases

The cases are invariably the largest accessories in the box.  These are sometimes firm, faux-leather enclosures with a zipper around the edges.  I prefer the soft, pliable pouches which seem to function more easily and take up less space.

The Sony ICF-2010 and -2001D did not include cases.  To give the radio some protection during travel and storage, I fabricated a ‘sock’ out of an old bath towel and some hot glue.  The so-covered radio was then inserted into a travel bag along with earphones and anything else I needed.  This worked very well over the years; so well that I extended the concept for some of my smaller radios, which came with cases.

Homemade socks for a PL-880 and ICF-2010 could even be color-coordinated with the rest of your gear.

Power Adapters and Batteries

The following is not intended as the definitive treatise on power adapters and batteries.  Enough guidance has been provided by others.  The takeaway here is that, if you ever refer to the radio’s manual, this is the occasion to do so.  Ensure you know how your radio was designed and the proper way to power it.

In my collection of portable radios there are several combinations of power adapters and batteries.

  • Some radios came with power adapters and others didn’t.
  • Some radios came with batteries and others didn’t.
  • Some just came with USB charging cords.
  • Some were intended for both chargeable and nonchargeable batteries.  Others were intended only for alkaline, nonchargeable batteries, in which case the power adapter disconnects the battery from the circuit and is only used to power the radio.

An adapter might be used to power the radio, recharge batteries, or both.  It’s hard to believe in these days of switching power adapters that an adapter could ever be used to listen to AM radio, but that was the case with the Sony ICF-2010/2001D and Grundig Satellit 800.  These radios came with a more costly transformer adapter which produced very little discernable noise.  Manufactured in pre-rechargeable alkaline days; however, the adapter did not provide a battery charge function.  Over the years, I have mostly used these radios in-house.  They tend to be D-battery-hungry, and so they are usually powered via the adapters.

When Sony got around to producing the ICF-SW7600GR, they took a different approach.  They simply figured it was a small, portable radio, and would mainly be used with batteries.  So, there is a power port for an optional 6-volt adapter, but no included adapter.

The OEM batteries aren’t always the best, so I have an extra supply of rechargeable NiMH and lithium batteries which I cycle through my radios, and the originals are simply included in the rotation.  The NiMH batteries that came with the Tecsun PL-600, -660, and -680 only had 1000 ma capacity and tended to self-discharge quickly after a year or two of use.  However, they got you started.

I have always wondered about using NiMH batteries in radios intended only for alkaline batteries – mainly older ones.  There is a 20-percent reduction in voltage.  How does this affect the performance of the radio?  I suppose this can only be answered on a case-by-case basis.  As an example, I have used NiMH batteries in the Sony ICF-SW7600GR from the very beginning with no apparent degradation.  However, on the XHDATA D-219 and D-220, the difference is quite noticeable.  For some radios, the battery type is switchable, and one must be careful not to connect a power adapter to recharge alkaline batteries.

Earbuds

If you’re serious about radio, you have a good set of earbuds or headphones.  I would venture to say the supplied earbuds for each of my radios are still in the box in their original wrapping.  I don’t get along well with earbuds.  They are hard to install in what apparently are my constricted ear canals and are always falling out.  Several years ago I purchased a set of quality over-the-ear headphones.  Not the most convenient for travel perhaps, but great for reproducing sound and mitigating outside noise.  Grundig went so far as to include a set of over-the-ear headphones with the Satellit 800.

Antennas

Most new portables come with 20- to 25-ft long wire external antennas having 3.5-mm plugs for connection to the external antenna jack.  Sometimes a plastic ‘clothespin’ is attached to the remote end of the wire for mounting.  For convenience, some of these wires are contained in a tape-measure-style spool.  These antennas are quite useful for the non-tinker and traveler, as they provide a means to extend the range, particularly on shortwave.

The C. Crane wire terminal antenna adapter, included with the Skywave SSB 2, is a boon to anyone without a soldering iron or otherwise not inclined to use one.  Other manufacturers take note.  A #2 Phillips screwdriver, and knife to strip the wire insulation are all you need for extensive antenna experimentation.

Source:  C. Crane Skywave SSB 2 Instruction Manual, p. 30.

Sony packed not one, but two 3.5-mm external antenna plugs with each ICF-2010/2001D.  The concept was the same as the C. Crane wire terminal antenna adapter.  These had wire pigtails ending in screw terminals for an antenna and ground wire of your choice.

External antenna adapter (1 of 2) packed with the Sony ICF-2010 and -2001D

A caution here.  The RF amplifier for LW, MW, and SW on the 2010 is an unprotected FET (Q303), which is notorious for failing due to electrostatic discharge from an external antenna.  Early on, your author was twice bitten by this snake.  There may be other radios that suffer from this vulnerability.

Straps

The strap is arguably the least useful accessory included with any portable radio.  The Sony ICF-2010/2001D came with a very attractive blue over-the-shoulder web strap, which has become something of an “item” among collectors.  Mine have been bound up in their original wrapping and stored away for 40-plus years, and might yield the cost of a new portable radio should I ever decide to auction them on the Internet.  I have never used them on either of my 2010s simply because I can envision the priceless radio dangling pendulously at the end of the strap waiting to meet disaster through contact with an immovable door jam.

The same goes for smaller radios which almost always include an obligatory wrist strap.  Perhaps these should not be classified as accessories, as they are permanently attached to the radio.  I avoid using them for the same reason as sited for the 2010s.  Besides, they just get in the way.  These straps are usually anchored inside the case, but I can’t bear to cut them off; so, I have just lived with them.  In the few cases where I have opened the case, I have omitted reinstalling them.  Instead of having a strap, how about a collapsible “lunchbox” handle?  I can even envision one of these being developed into a dual-purpose handle/antenna.

Manuals

Don’t forget the manual.  We’ve gotten away from manuals.  People don’t use them, and they are a manufacturing expense.  Besides, you can find your answer on the Internet.

As a retired technical writer, however, I have a strong respect for a well-crafted technical manual.  Besides actually using them, I unconsciously evaluate them.  Unfortunately, most are written as an afterthought – an attempt to forestall customer enquiries.  “Read the manual.”  The problem is compounded by radios intended for a worldwide market, wherein the manuals are authored by writers who labor under the handicap of having English, French, Spanish, German, etc. as a second language.

There are also situations where the printing is too small or the fanfolds too inconvenient.  My standard practice is to download an electronic copy of each manual, print it out in 8 ½” × 11” format, and put it in a comb or 3-ring binder.  This is easier on aging eyes, and more suitable for adding my own notes.

…and so forth

Besides the common accessories described above, some unique items have been included over the years.  For example, Tecsun has packaged very nice 20-inch by 30-inch charts with some models.  One side contains a world map showing amateur call areas.  The other side is an enlargement of the radio with each button or control function described.

Going back a few years, Sony included a slick publication called the Wave Handbook with some of their radios.  These had convenient station vs. time charts for world band radio.  The charts were like those published in frequency vs. time format in Passport to Worldband Radio.  The booklets were published in several editions over the years, but obviously, these were time sensitive and became outdated rather quickly.  Still, they could pique the interest of folks new to SWLing.

Packaging

Finally, there is the box the radio came in and any accompanying wrapping.  The packrat DNA in me usually demands that I keep all this.  It can speed up the sale or otherwise increase the value of the radio, if you ever decide to sell it.

Which radio accessories do you use?

Would you like an option to buy the radio without any accessories?

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