Category Archives: AM

Eye On America: NC radio station becomes voice of recovery after Hurricane Helene

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From CBS Evening News:

After Hurricane Helene devastated western North Carolina, a couple of radio broadcasters played a critical role in keeping residents informed. Now, six months later, they have taken on a new role in the recovery. Skyler Henry reports.

Click here to view on YouTube.

Having experienced the devastation of Hurricane Helene firsthand, I can confirm that this radio station, along with its FM relay, delivered crucial community updates when both internet and mobile phone services failed.?Never underestimate the power of local radio. — Thomas

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Geerling Engineering’s Take on the FCC’s “DELETE, DELETE, DELETE” Docket

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Jeff and Joe Geerling provide a quick but insightful overview of the FCC’s “DELETE, DELETE, DELETE” docket, offering their thoughts on its implications—especially from Joe’s perspective as a broadcast engineer. Their discussion is a great starting point for understanding how these regulatory changes could impact radio and wireless communications.

Click here to view on YouTube.

I should note that a couple weeks ago I submitted a public comment on the FCC site regarding the importance of the amateur radio service—while this isn’t specifically about deregulating the amateur radio service, I believe it’s always worth reinforcing the value of maintaining our spectrum allocations. Click here for more information on the FCC website.

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Simple Wire Antenna: Giuseppe’s Mediumwave DXing Adventures from the Tyrrhenian Sea

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Many thanks to SWLing Post contributor, Giuseppe Morlè (IZ0GZW), who writes:

Dear Thomas and Friends of SWLing Post,

I am Giuseppe Morlè from Formia, Central Italy, on the Tyrrhenian Sea.

This time, I want to share a very simple antenna setup for listening to and attempting extreme DX on Medium Waves.

I first saw this antenna in several videos, and many DXers have used it during various expeditions.

For my setup, I used a 15-meter-long wire. At around 11 meters, I formed a small coil with 8 turns, then continued the wire for another 3 meters.

I began with some tests on my balcony by laying the wire flat along the ground for its entire length. I used my small Sony SRF-37V as a receiver. By placing the receiver within the coil of turns, I immediately noticed a significant difference compared to the built-in ferrite antenna.

In the early afternoon, I tuned into a Chinese language broadcast on 1377 kHz. You can watch a video of this experiment on my YouTube channel:

Encouraged by the excellent results, I decided to head to the tourist port of Caposele di Formia the next day in the early afternoon. I set up on the pier overlooking the sea. This time, I laid the wire in an eastward direction — towards the night, where the sun had already set, while it was still high for another two hours on my side.

Once again, I achieved amazing results.

I was able to hear the same Chinese station on 1377 kHz, but this time with much clearer audio than from my balcony, where electrical noise interfered. By the sea, the signal was clean and strong.

After a while, I tuned into VOA broadcasts from Thailand on 1575 and 1395 kHz, both with surprisingly good audio quality. You can see this second experiment here:

Sometimes, all it takes is a bit of wire and a small coil to create an excellent, ground-level antenna — in this case, oriented eastward.

I also tried using my loop cassette and a Tecsun PL-660 but couldn’t hear anything. Yet the little Sony SRF-37V proved itself to be a true “DX killer” on AM — truly impressive.

I even caught a segment of the VOA program “World Today,” discussing the Chinese economy and Southeast Asia.

As the sun set, the DX signals faded, making way for closer European and Asian broadcasters.

I will definitely return with a longer wire to see if this surprising setup can be improved even more.

A warm greeting to all the Friends who follow SWLing Post and to you, Dear Thomas.

73, Giuseppe IZ0GZW

More Reception Videos:

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

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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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Bob’s Radio Corner: Pairing a Phone or Tablet with a Radio

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Pairing a Phone or Tablet with a Radio

By Bob Colegrove

The Internet is full of resources for radio listeners and hobbyists.  There are numerous examples of general information, frequency, and schedule lists.  There are also WebSDR sites, which allow you to compare reception experiences from around the world.  All of these can be accessed quickly and easily by having them loaded on your phone or tablet operating side-by-side with your radio and having Wi-Fi or cellular access.  We never had any of this when I was starting out.

I realize there are other ways to go about what I have described below, for example, merging station listings with SDR.  This posting is for folks like me who are SDR-challenged.  I listen to plain old radios.  My modern-day experience with newfangled technology has been limited to hitchhiking on WebSDR sites for the last few years.  It has served me well.

Ideally, I would like to generalize this topic to simply cover all phones and tablets.  In truth, my experience has been limited to an iPhone and Kindle Fire tablets.  They have worked very well as I shall explain.  Perhaps you have paired a different phone or tablet with your radio, in which case, feel free to share your experience.

The choice of a phone or tablet is yours.  Either works well.  Your decision will be affected by what you have available and what is easier to use.  If you intend to buy a new device and associate it with your radio, cost will be an additional factor.

A noteworthy device (the one I tend to favor) is a Kindle Fire.  Mainly, they are cheap.  The regular price of a 7-inch model is just under $60 and can often be purchased for less during Black Friday and Prime Day sales.  It is versatile, possessing all the usual functions except for cellular access.  Perhaps most importantly, it is virtually noise-free.  For a while I struggled using Internet sources on a laptop computer.  Even a good one located about 10 feet away from the radio antenna generates noise.  On the other hand, I have taken a 7-inch Kindle Fire in hand and placed it against the resonant coil of a loop antenna.  This abuse generated no more disturbance to the antenna than if it were a block of pinewood.  I have noticed some slight noise from the 11” Kindle when the antenna is exposed this way, but when that tablet is held at arm’s length from the antenna, all is well.  Recently, I have expanded this application to my iPhone and found its noise immunity matches that of the Kindle Fire 7.

Broadcast Schedules

The most useful Internet resources are the broadcast schedules.  These are the comprehensive frequency-time-station listings that tell us where and when to tune.  There are many good ones.  My favorites are the EiBi listing http://www.eibispace.de/, and Dan Ferguson’s https://groups.io/g/swskeds/topics.  For the latter you will need to request membership.  SWskeds merges EiBi, Aoki (https://www1.s2.starcat.ne.jp/ndxc), HFCC (https://new.hfcc.org/index.php), as well as other sources into a single list.

Processing

The EiBi listing comes as a CSV-formatted text file, which can be imported into a spreadsheet. I have done some processing using spreadsheet functions to produce a customized listing.  Processing the frequency-time-station lists is most conveniently done using a computer rather than the phone or tablet.   Processing includes selecting, arranging, or filtering the downloaded data tailored to your needs.  This might include adding a filterable column to indicate only stations that are on at the current time.  Some users might favor filtering by country or station. The heavy lifting processing is done automatically whenever a new listing is published by simply dropping the new file into the existing spreadsheet.  No, the functionality of a spreadsheet and ease of editing are not as good on a tablet as with the mouse and keyboard of a computer.  My processing on the computer includes measures to optimized the screen view to the most essential information thus minimizing the amount of scrolling on the tablet.

After the files are downloaded and processed, they can be loaded on the phone or tablet in a couple of different ways.  They can be directly transferred over a USB cable, or they can be transferred using a cloud server.  The USB cable-transfer method may be difficult on some devices, particularly iPhones.  The Kindle seems to be the more convenient device.  Being an obedient Microsoft customer, I can also transfer the files from my computer to OneDrive, then pick them up on the Kindle or iPhone using the OneDrive and Microsoft 365 apps which are available for both phone and tablet.

Examples

The screenshot below shows an EiBi example at 0014 UTC.  Although the “ON” column filter is set to show only transmissions currently “ON,” it had not been manually updated on the Kindle for a couple hours and thus includes listings from a previous time.  The EiBi database does not include transmitter power or beam information.  However, the identification of countries and transmitter sites is extensive.  These are determined by downloading and printing the README.TXT file on the EiBi site.

The SWSkeds listing is available in both CSV and Excel formats.  It contains several additional data fields, very importantly including transmitter power and beam direction when available.  For this list, I make the simple conversion of the existing Excel data range tab, “COMBINED” to a table so I can easily apply filters.  The screenshot below shows an example at 1750 UTC with the “ON” column filtered to “ON.”

Not to be left out, the complete medium wave broadcast station list for Region 2, the Americas, is easily downloadable at https://www.fcc.gov/media/radio/am-query.  The entire database is formidable and contains nearly 600 pages in a printable format.  Much of this bulk is due to the doubled size necessitated by giving both daytime and nighttime power separate entries for each station.  A number of marginally useful data columns can be eliminated in spreadsheet processing.  I have added formulas to calculate the azimuth heading and distance from my listening post (blanked out in the example below).

A variation of the downloadable file format is the direct-query site, SHORT.WAVE.INFO.  Here you can simply enter queries by station, language, frequency, or band, and produce listings which match your criteria.  Any listings which are currently on the air will be highlighted in red.

WebSDR

Finally, I would like to mention the WebSDR sites.  While not used explicitly for broadcast schedules, these sites are great for anyone wanting to compare how well they are receiving signals relative to what others are experiencing.  Granted, location and time of day are big factors that affect reception, but it is still useful to make these relative comparisons.

Home base is http://websdr.org/ which presents a catalog of many WebSDR sites by location.  At the bottom of the page is a world map which pinpoints the location of each site.  Most of these sites cater exclusively to hams; however, The University of Twente, Enschede, Netherlands (http://websdr.ewi.utwente.nl:8901/) covers 0.000 to 29.160 MHz unabridged.  The screenshot below shows the tablet/phone version of the U. of Twente site.  There are also two sites on the US East Coast which cover some non-hamband portions of the SW spectrum:  http://na5b.com:8901/ in the Washington, DC area and http://websdr.k3fef.com:8901/ in Milford, Pennsylvania.  The SHORT.WAVE.INFO and WebSDR sites can be directly accessed and queried over the tablet’s browser and a Wi-Fi or cellular connection.

Using the System

In my relentless pursuit to log the Nibi-Nibi Islands, I will load up one of the frequency-time-station listings and start my DX session.  This typically includes a scan of a particular band, checking signals I can receive against the lists.  If my interest peaks on a particular catch (usually a weak one), I will switch the tablet over to a WebSDR site to see how it is being received in Europe or along the East Coast of NA.

In summary, ready access to these Internet resources using a phone or tablet next to the radio has notable advantages:

  • The frequency-time-station listings provide quick, reliable signal identification in most cases.
  • The WebSDR sites confirm that my antennas are doing their job.

Am I done?  I hesitate to stop here.  The process of discovery is a marvelous human experience.  The foregoing are merely starting points.  Other applications might include sunrise-sunset calendars or maps or propagation forecasts.  There are certainly other ways to do all this depending on your druthers.  I know I am erring by omission and neglecting many other good resources.  Let’s hear about yours.

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Blackout in Chile: A Reminder of Radio’s Role When All Else Fails

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Many thanks to SWling Post contributor Carlos Latuff, who writes:

Good morning, Thomas. I just translated this article from Chilean radio station “Canal 95”, published on February 26. Original in Spanish here: https://www.canal95.cl/magazine/apagon-redes-sociales-rinden-tributo-radio-pila

After the blackout, social media pays tribute to battery-operated radios

Social media users highlighted the importance of battery-operated radios as the only reliable source of information in emergencies, while critics pointed to the fragility of the current system.

After a large blackout left much of Chile without electricity last Tuesday, millions of people were affected and left without communication. All due the fact that the telecommunications and internet antennas service completely collapsed.

In this scenario, and in the absence of real-time information, social media users began to highlight the importance of having battery-powered radios to access news in emergencies such as, for example, the decision to declare a curfew.

“Will we have to go back to copper wire telephones? Cell phones ‘died’ in the emergency. Explanations are useless in the face of a serious incident. Earthquake, tsunami, flood, or power outage like yesterday. Totally incommunicado. Only the battery-operated radio worked ,” remarked the renowned journalist and radio personality, Sergio Campos.

Many also recalled that this device has been key during earthquakes and other disasters in the country, although there was no shortage of jokes.

“Serious question: does everyone really have a battery-operated radio?” asked one user of the X platform. “It’s always good to have one. My mother-in-law has one and it’s super old, but it works. And the radio too,” joked comedian Luis Slimming.

Although some users admitted not having a functional radio at home, implying that they had not previously considered it necessary due to the outdated technology, other users reinforced the importance of having one of these reliable devices that allow them to stay in touch.

The work of radio stations that continued to operate during the emergency was also highlighted. There was no shortage of criticism of telephone companies and the widespread use of smartphones that do not have integrated FM radio.

“I want to give a round of applause to Chilean radio stations. We would still be going around in circles if it weren’t for the fact that they continued to broadcast and report on what was happening. Every Chilean home should have a battery-operated radio ,” wrote @satoruswft .

It remains to be noted that Chile has historically faced natural events that disrupt basic services, but the current dependence on the Internet and cell phones has created a gap in preparation for blackouts.

So, keep this in mind: a battery-powered radio is still a must-have in an emergency.

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Don Moore’s Photo Album:  Guatemala (Part Three)- Guatemala City Continued

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

Photo Source: Dennis Sylvester Hurd via Wikimedia Commons

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

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.

When I started DXing in 1971, and for several decades afterwards, the most widely logged Guatemalan shortwave station by DXers was Radio Cultural on 3300 kHz. It was also known as TGNA, the call letters of that 90-meter-band frequency. The medium wave outlet on 730 kHz was TGN. The station also used 5955 kHz and 9505 kHz, but those frequencies were always harder to hear because of interference from more powerful international broadcasters.

Back then this Evangelical broadcaster was owned and operated by the Central American Mission of Dallas, Texas, but only received a portion of its funding from the CAM. Additional funding came from local donations in Guatemala and another important source was selling time to American Evangelical preachers to air their prerecorded English language religious programs. These programs were broadcast late at night, when propagation into North America and Europe was best, and were always preceded by an English station identification. That made it an easier log for DXers who didn’t understand Spanish.

TGNA was the station I most wanted to visit when I arrived in Guatemala City in June 1983. But Guatemala DX Club members informed me that the station had been temporarily closed down because of “philosophical disagreements” with the government. They were off the air and would remain so for several weeks. I made four more visits to Guatemala City over the next year but somehow never found the time to visit the station. It wasn’t until my visit in December 1987 that I finally stepped inside their front door. That visit became the subject of the first article I wrote for Monitoring Times magazine in June 1988.

Wayne Berger, station manager and chief engineer, and missionary Bob Rice gave us a very long tour of the station. Wayne and Bob had built or rebuilt most of the station’s technical equipment and even some of the infrastructure. On the day we arrived they were welding a broken door back on its hinges. Wayne had built the 3300 kHz transmitter, shown in the next picture, out of spare parts.

Main studio control room at TGNA in 1987.

At the time of my visit, TGNA had two pennants. The larger one was mostly reserved for local listeners. The smaller one was sometimes included with QSLs to lucky DXers.

But neither of those compared with these traditional handmade weavings given by listeners for the station’s 37th anniversary in August, 1987. (I just wish my color photos had survived.)

English ID from Radio Cultural, 3300 kHz, as heard in Pennsylvania 23 November 1979 at 0427 UTC:

Audio Player

Radio Cultural, 3300 kHz, as heard in Michigan 23 March 1989 at 1101 UTC:

Audio Player

Easter in Guatemala

Of all the things I’ve seen in my travels, the Easter processions of Guatemala certainly rank near the top. I am fortunate to have been in Guatemala twice for the holiday, in 1982 and 1984, and I plan a return trip in the next few years. Processions take place all over Guatemala during Easter week, but the most elaborate take place on Easter Thursday and Good Friday in Guatemala City and, especially, in Antigua, the old capital twenty kilometers to the west. There are several processions both days in each city and each procession takes several hours. Continue reading →

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