Category Archives: Radio History

First Look Inside the Updated and Upgraded VOA Museum

Many thanks to SWLing Post contributor David, who shares the following news items via WVXU and Spectrum News:


A first look inside the renovated VOA Broadcasting Museum (WVXU)

Visitors to the National Voice of America Museum of Broadcasting in West Chester Township will notice the first improvement immediately after turning into the driveway off Tylersville Road.

New pavement covers the old potholes.

That’s just one of many enhancements at the 1942 VOA building thanks to $500,000 from the state of Ohio. The museum reopens this weekend (Jan. 25-26) after a seven-month renovation with a reconfigured exhibition space, more TV monitors, a revamped Cincinnati broadcasting area, and new lighting, carpeting, drop ceilings, and heating and air conditioning systems.

“It’s now beginning to look like a real museum. This is a major, major, major, major infrastructure improvement,” says Jack Dominic, museum executive director.

“This changes everything. We’ve got heat and air conditioning, and carpeting everywhere. We now have a building that is up to code and able to be a welcoming place for all visitors. We don’t have to apologize any more.” [Continue reading…]

New sounds, exhibits shine at the National VOA Museum of Broadcasting (Spectrum News)

CINCINNATI — These days, it’s easy to take communication technology for granted.

We open our phones and there’s the daily news. We get in our car and we’re connected to any type of programming imaginable, and our devices can bring us just about any livestream from across the world at a moment’s notice.

However, it wasn’t all that long ago that communication was a lot different.

After a six-month closure for renovations, the National Voice of America Museum of Broadcasting is back open.

“We kind of call it the ‘Cincinnati Wing’ and it’s kind of a history of broadcasting in Cincinnati going all the way back to Powel Crosley,” said the museum’s Executive Director Jack Dominic as he gave a tour. [Continue reading…]

Don Moore’s Photo Album: Museum Findings – World War II

Along US Highway 550 in southwest Colorado

Don Moore’s Photo Album
Museum Findings: World War II

by Don Moore

More of Don’s traveling DX stories can be found in his book Tales of a Vagabond DXer

Learning should be a life-long pursuit for all of us. One of my ways of doing that is by visiting museums while traveling, whether in the USA or abroad. Cultural, historical, and science museums are my favorites. And if a museum’s theme includes the 20th century, there is a good chance that something related to radio will be found in the collection. In this edition of the Photo Album I want to share some findings related to radio and World War II that I’ve recently found in museums here in the USA.

Do A-Bombs QSL? 

I’m based in Pennsylvania but my daughter lives in western Colorado and my son in Texas. So in September and October of 2024 I made a 45-day road trip to visit them both and see sites along the way. One stop was Santa Fe, New Mexico. The New Mexico History Museum downtown has an excellent exhibit on the development of the Atomic Bomb and the effect on the local area. The real place to learn about this, however, is an hour north of the city at Los Alamos, where the project actually happened.

In addition to the historical sites, Los Alamos has one of the best science museums I’ve been to anywhere. That’s not surprising considering that not many places have as many scientists per capita as Los Alamos does. And there I learned that radio was closely involved in dropping the first A-Bomb on Hiroshima.

The scientists at Los Alamos developed two types of atomic bombs. The bomb dropped on Hiroshima used a uranium-gun to initiate the explosion. The scientists were certain this would work so this was not tested beforehand. The bomb dropped on Nagasaki used the second method with a with a plutonium-implosion as the trigger. But they were uncertain as to whether or not this would actually work so it had already been tested in the New Mexico desert in July 1945. That was the first atomic explosion and the scientists collected lots of useful measurements.

But the developers had no such measurements for the uranium-gun bomb as it hadn’t been tested. But how to get them? They obviously couldn’t place monitors on the ground at Hiroshima beforehand. Physicist Luis Alvarez was tasked with finding a solution. Alvarez’s team built three canisters filled with monitoring equipment and VHF transmitters to be carried by The Great Artiste, the observation plane that would accompany the Enola Gay to Hiroshima. The three canisters were to be dropped by parachute at the same moment that the Enola Gay dropped the bomb.

The signals from the canisters were to be picked up by a bank of Hallicrafters S-36 VHF receivers on the plane and then feed to oscillographs to record the results, which would simultaneously be recorded by movie cameras.

It all worked according to plan and data was received from two of the three canisters before they were engulfed by the explosion. But, to the best of my knowledge, no QSLs were issued for the receptions.

The WASP Museum

My next destination after Santa Fe was San Antonio, Texas, 700 miles (1100 kilometers) away. To make the road trip more interesting I wanted to find some things to see along the way. While perusing Google Maps I came across the National WASP World War II Museum in Sweetwater, Texas. The museum has nothing to do with insects. The acronym stands for Women’s Airforce Service Pilots.

The use of women pilots in support roles to the US Army Air Force began in 1942 with the Women’s Flying Training Detachment (WFTD) and Women’s Auxiliary Ferrying Squadron (WAFS). In 1943 the two programs were merged to form the WASP program and the airfield at Sweetwater was chosen for the four-month training program. In total, 1,830 women started WASP training and 1,074 finished, about the same success rate as with male military pilots of the era. Continue reading

Carlos Explores Japan’s Radio Nikkei: A Unique Shortwave Listening Experience from Brazil

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


Exploring Radio Radio Nikkei

by Carlos Latuff

It’s been a while since I listened to Nikkei Radio, a Japanese commercial broadcaster that operates on shortwave for a domestic audience. If I remember well, the signal was very weak and, since I don’t speak Japanese, I didn’t know what the content of its broadcasts was about. But today, with the possibility of recording the audio, transcribing it and translating it, it has become more interesting to follow its programs on shortwave here in Brazil, more specifically in Porto Alegre (distance between Nikkei’s transmitter in Chiba, Japan, and Porto Alegre, Brazil: 18779 km).

Nikkei Radio 1 was founded in 1954 and Nikkei 2 in 1963, and at the time it was called Nihon Shortwave Broadcasting Co., better known by the acronym “NSB”. Some Japanese electronics manufacturers have in the past released receivers dedicated to receiving the signal from these stations (see below).

Today, the Japanese company Audiocomm has radio models whose packaging states that this receiver is compatible with Nikkei Radio; note the image alluding to horse racing (see below).

I haven’t been able to acquire any of these devices (yet), since they were basically produced for the Japanese public. But any receiver with shortwave bands can tune into Radio Nikkei. I use my good old XHDATA D-808 with a long wire antenna. In Porto Alegre, the best propagation is between 08:45 AM and 06:15 AM (UTC). In the late afternoon, the signal also arrives, but with a fair amount of static.

Both Radio Nikkei 1 and Radio Nikkei 2 operate on the following frequencies:

Radio Nikkei 1:

  • 3.925 MHz (in case of emergency)
  • 6.055 MHz
  • 9.595 MHz (in case of emergency)

Radio Nikkei 2:

  • 3.945 MHz (in case of emergency)
  • 6.115 MHz
  • 9.76 MHz: (in case of emergency)

On the station’s website https://www.radionikkei.jp/ you can find details of its programming, as well as broadcast times, including a table (in Japanese) with this information, which can be translated with the help of Google Lens.

Radio Nikkei also broadcasts its programming via streaming, however the platform used (radiko) is inaccessible to me here in Brazil (see message below).

Nikkei Radio is majority-owned by the business newspaper Nihon Keizai Shimbun and the Tokyo Stock Exchange, which means the station focuses mainly on the financial market. However, much of its programming, especially on weekends, is dedicated to horse racing, a popular sport in Japan. In addition to news, talk shows and music, the radio station also broadcasts evangelical preaching (!). One of these religious programs is called “True Salvation” and is sponsored by The Japan Gospel Mission, a Christian Protestant organization.

This heterogeneous mix of business, horses and Jesus Christ makes Nikkei Radio an interesting station to tune into, to say the least.

The radio listening sessions published here were made in the central Porto Alegre, Brazil, between January 15th and 19th, 2025.

(Domo arigato gozai masu Mr. Tagawa Shigeru for helping me with translation).

Click here to view on YouTube.


Click here to view on YouTube.


Click here to view on YouTube.


Click here to view on YouTube.


Video Short: Tuning In Radio Nikkei 1

Part of Radio Nikkei 1 program “Health Network”, in Japanese. Topic: Winter diet and health. Listened in Porto Alegre, Brazil.

From NDBs to TIS: A DXer’s Journey Across 1610-1700 kHz

Many thanks to SWLing Post contributor Dan Greenall, who shares the following guest post and asks, “Wonder who can add to this list?“:


A Look Back – DXing between 1610 and 1700 kHz

by Dan Greenall

1. The Caribbean Beacon, Anguilla West Indies 1610 kHz (1985 QSL)

2. NDB stations (non-directional beacons)

  • transmitted call letters on CW, mostly from airports, heard in the 1970’s
  • examples: MDE Medellin, Colombia 1690 kHz and RAB Rabinal, Guatemala 1613 kHz

3. U.S. Army Broadcasting Service KTRK 1670 Fort Meade, MD Feb 1996          articles and recordings

https://www.radioheritage.com/ktrk-k-truck-1670-khz/

4. FCC Part 15 Radio Stations

Example:    WDKW 1630 “the Klaw” Dundalk High School near Baltimore, MD

Link to my recording made at a DX camp in Coe Hill, Ontario, Canada on April 20, 1997: https://archive.org/details/wdkw-the-klaw-1630

An internet search revealed the following;

Part 15 of the Federal Communications Commission (FCC) rules allows some low-powered radio devices to operate without a license on the AM and FM radio broadcast bands. These devices are subject to certain restrictions, including:

  • Range: On FM frequencies, the effective service range is limited to about 200 feet (61 meters).
  • Field strength: The field strength should not exceed 250 ?V/m (48db) at 3 meters.
  • Detachable antennas: Part 15 rules prohibit detachable antennas on all Part 15 transmitters.

Some examples of Part 15 radio stations include:

  • Microbroadcasting

Often used by hobbyists, drive-in theaters, or on college or high school campuses.

  • Talking roadsigns, talking houses, or talking billboards

These transmitters air a repeating loop of information, such as traffic or highway construction. They typically operate on empty channels on the AM broadcast band.

  • InfOspot

A custom product that can include special audio systems, USB / internet connectivity, cabinets, and antenna mounting styles.

  • Free-radiate AM radio stations

Educational institutions can use a transmitter without a license if the signal coverage is limited to their property.

5. TIS (Travellers Information Stations)

1610 kHz with low power, usually around 10 watts, such as the one I hear near the Blue Water Bridge between Sarnia, Ontario and Port Huron, Michigan

6. Expanded AM broadcast band 

Over a quarter century ago, these frequencies began to be used in the U.S. by BCB stations.  I still have recordings of a half dozen of these from the early days.

WTDY 1670:

WNML 1670:

WMDM 1690:

KCNZ 1650:

KCJJ 1630:

KBGG 1700:

Also, here is a link to a column in Popular Communications magazine from February 1998.

https://www.worldradiohistory.com/Archive-Popular-Communications/90s/Popular-Communications-1998-02.pdf

Rediscovering the Golden Age of Utility DXing

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

Hi Thomas

Back in the 1970’s, I used to enjoy hunting for “utility” radio stations outside the regular SWBC bands. When I came across a copy of the Utility DXer’s Handbook from 1971 recently on eBay, I couldn’t resist purchasing it. I have since made a page on archive.org for it to help preserve this unique piece of radio history. Anyone interested can follow this link and take a look at the world of utility radio as it was over 50 years ago.

Also, I have included links to some of the recordings and QSL’s from these stations that I have set up on the Internet Archive.

Wow, Dan! What a utility DXing treasure trove you’ve created on Archive.org. Thank you for sharing these resources and recordings with us!

WI2XLQ: Brian Justin’s annual longwave broadcast starting Christmas Eve and New Year’s Eve

Canadian Reginald Aubrey Fessenden in his lab believed circa 1906 (Source: Radio Canada International)

Many thanks to SWLing Post contributor Brian (WA1ZMS), who writes:

What has now become an annual LF listening event, WI2XLQ (an FCC Experimental Callsign) will once again be QRV for a recreation of the alleged first voice transmission made by Reginald Fessenden in 1909. Transmission on 486kHz in full carrier AM will start at 22:00z on Dec 24th and run for 24hrs. In keeping with tradition, a repeat transmission will take place on Dec 31st at 22:00z and run for 24hrs. Further details about the Fessenden transmissions can be found in prior years of ARRL News.

-Brian, WA1ZMS

I look forward to tuning in each year. Thank you so much, Brian, for making this annual broadcast a reality!

Don Moore’s Photo Album: Albania – Part Two

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


Façade of the National Museum of Albania on Skanderbeg Square

Don Moore’s Photo Album: Albania – Part Two

Bunkers and Bugs

Click here to read Part One: Finding Radio Tirana

More of Don’s traveling DX stories can be found in his book Tales of a Vagabond DXer. Don visited Albania in March 2024.

Albania has a lot to offer foreign visitors. The country has coastal beaches, beautiful mountains and historical sites hundreds and thousands of years old. Tirana is a fascinating city filled with good restaurants and friendly people. It’s inexpensive. The central city is easy to get around on foot. I’m already planning my next visit.

But the number one reason to visit Albania is to see the sites related to the Communist era and the Enver Hoxha dictatorship. I don’t think there is anywhere else where you can get such close insight into what real life was like inside a brutal police state. Indeed, after visiting Tirana, I can’t imagine how anyone could praise dictatorships or say that their own country would be better off under a dictatorship. In Tirana three sites in particular stand out in this regard. And each of them has some interesting displays involving the use of radio.

The House of Leaves

The House of Leaves … the name sounds peaceful and innocent. That was once true. Constructed in 1931, the two-story villa originally served as the first obstetrics clinic in Albania. Then when the Nazis moved in after the Italian surrender in 1943, it was chosen as headquarters for the Gestapo. That might have been a minor blip in the structure’s history, but the Gestapo had remade the building into just what Enver Hoxha’s new government needed: a headquarters for their secret police.

The dreaded Sigurimi would occupy the building for nearly five decades. But that was supposed to be a secret, so no one could say what the villa really was, even though everyone knew. So it became known as The House of Leaves from the vines that covered the outer walls. Even then, the name was mostly whispered among the closest friends. It wasn’t safe to pay much attention to the building.

After the Communist regime fell in 1991, The House of Leaves mostly sat unused. Then, in 2014 the Albanian Ministry of Culture announced it would be turned into a museum telling the story of Sigurimi and its operations. The Museum of Secret Surveillance opened in 2017 and three years later was awarded the European Museum of the Year award by the Council of Europe.

The museum has many rooms focusing on various aspects of Sigurimi’s work. My favorite was one filled with electronics used to monitor and record conversations by suspected malcontents.

The key to monitoring someone was placing a radio transmitter bug in the suspect’s home. The Sigurimi made their own bugs in a workshop in The House of Leaves. They were particularly proud of the tiniest ones, which could very easily be hidden.

The bugs were usually placed inside a small piece of wood that could be placed under a table or chair. The effective range was only about two hundred meters, so monitoring posts had to be in the same building or nearby. The Sigurimi would either recruit a neighbor or persuade a neighbor to host a Sigurimi agent to monitor the recordings. Rinia brand transistor radios made in Romania were the preferred receiver. They were inexpensive and could easily be modified to receive the desired frequency. And they were common enough that possession of one didn’t mark a person as a government agent. Agents usually listened in on headphones while also making a recording of the conversation.

In some cases, homemade amplifiers were used to boost the weak signals produced by the tiny bugs.

Recordings of conversations of interest were taken back to The House of Leaves for further investigation at monitoring posts such as this one.

The Bunkers

Enver Hoxha knew that tiny Albania could never support an army large enough to repel an outside invasion. His experience as a guerilla in World War II, on the other hand, had convinced him that an armed hostile populace could do the job. Albania was, after all, the only occupied country to retake its own capital without any outside help. So Hoxha based Albania’s national defense on making sure that invading the country would be so difficult and painful that no one would dare attempt it.

A key part of that policy was constructing concrete bunkers. Hoxha’s goal was to construct 750,000 of them – approximately one for every four Albanians at the time. Just how many were actually constructed is not known, but the number was in the hundreds of thousands. And they were built everywhere – in farms, in forests, in villages, and in cities.

Most were the three-meter-wide Qender Zjarri type, just large enough to give two or three combatants a concealed firing position. Depending on the location these were built individually or else in small clusters. Today, a fun activity while traveling by bus through Albania is seeing how many you can spot. Occasionally these bunkers are used for storage but there are so many that most are abandoned other than the occasional visit by local teenagers. Evidently, they’re the cool place for losing one’s virginity.

The second type of bunker was the eight-meter-wide Pike Zjarri, intended to serve as local command centers. Being larger, many of these have been put to other uses. And then there were the big bunkers, huge complexes of underground rooms and tunnels where officials would take refuge and continue to run Albania’s government. But today’s Albania is not concerned with repelling foreign invaders. Instead it welcomes them in the form of tourists. And so two of the biggest bunker complexes in Tirana have been turned into museums. And both of them contain some interesting radio memorabilia.

Enver’s Refuge

The biggest bunker was a vast underground complex built in the 1970s inside the base of a mountain on the eastern outskirts of Tirana. Construction was so secret that this bunker’s existence wasn’t even known publicly until the 1990s. This was where Enver Hoxha and other top officials would have gone in the event of an invasion or nuclear attack. It had over one hundred rooms on five levels with its own power and water systems. The entrance passed through a decontamination station where anyone entering could wash off the fallout if a nuclear bomb had already been dropped. (Or so they hoped.)

The inside is a labyrinth of hallways and small rooms used for everything from communication centers to support services. There is even a small auditorium where the Albanian legislature could meet. Enver Hoxha and the prime minister had small spartan private apartments. Other officials, guards, technicians, and servants slept in dormitories. Of course, the facility was never used. It’s believed that Enver Hoxha only visited three times – once when it was completed in 1978 and then two more times for drills.

One of many hallways in the Enver Hoxha’s refuge. 

Enver Hoxha’s office in the big bunker. The desk has the same Chinese-made Red Lantern Model 269 receiver that I saw at the Radio Bar Tirana.

The Albanian military continued to use the facility for several years after the Communist government fell in 1991. After that it was locked up. Then in 2014 a pair of journalists came up with the idea of making it into a museum which was named Bunk Art. But it’s a history museum, not an art museum. Some rooms were left unchanged to show the structure’s original purpose. Others were filled with exhibits on Albanian history, the Italian invasion, the Communist period, and life under Communism. And those exhibits include a few interesting radio items.

According to the display, this was one of two portable transceivers in possession of Xhevdet Mustafa when he was killed by the Sigurimi on the beach south of Tirana in 1982. The display didn’t make clear who Mustafa was working for.

On several occasions in the early 1950s the CIA tried to insert small bands of Albanian agents into the country, mostly without success. This Russian-made transceiver was part of the gear that came with a small group of agents parachuted into Albania in 1953. The group were all killed or captured when they landed. With help coerced from the prisoners, the Sigurimi used this radio for several months to trick the CIA into continuing to air-drop supplies into the mountains.

This black-and-white Albanian-made TV was configured at the factory to only receive Albanian channels. However, clever Albanians figured out ways to use small electronic circuits (called kanoce) that overrode those limits. Albanians along the coast were able to receive TV from Italy while those in border areas could receive Yugoslav or Greek TV.

The Downtown Bunker

The original Bunk Art proved so popular with Albanians and foreign visitors that in 2016 it was renamed Bunk Art 1 and a second location, Bunk Art 2, was opened in the city center. This bunker had been built under the city streets near The House of Leaves and had been intended for use by the Ministry of Internal Affairs. It consisted of a single level with several branching hallways lined with small rooms. Today, it’s a museum telling the story of the Ministry (of which the Sigurimi was just one part) until its dissolution in 1991.

This bunker was also configured for a long-term stay. The Minister of Internal Affairs had this private bedroom.

Some Chinese-made radio equipment used by the ministry.

The Broom Bug

On 12 December 1985, the streets of Tirana were crowded with people out to watch a large patriotic parade which just happened to pass by the Italian embassy. Two women and four men dressed in fashionable western clothes and chatting in Italian among themselves snaked their way through the crowd to the door of the embassy. The Albanian police monitoring the door didn’t try to stop them. Obviously, they were Italian tourists or embassy workers. Except they weren’t. The sisters and brothers of the Popa family had long been persecuted by the Albanian government as their parents had collaborated with the Italians during the war. And now the six children wanted political asylum.

The Italians were willing to resettle the family in Italy but the Albanian government refused to give them permission to leave. Instead Albania demanded that the siblings be turned over to its police, which the Italians refused to do. The family would live in the embassy for 4 ½ years until the Albanian government finally agreed to let them go. In the meantime the Albanians kept a strong police and military presence in the neighborhood surrounding the embassy.

The Sigurimi wanted to know what was going on inside so they recruited an Albanian maid who worked at the embassy to help them. She was given five bugs and instructions to hide them in the usual places like behind paintings and under tables. They knew the Italians would find these and that was fine. It would give the Italians false confidence that they had found all the bugs. The real bug was concealed in a special new broom that the maid brought in and left in a closet next to where the Popa siblings stayed. Each day she was given a freshly charged battery to swap with the depleted one inside the broom. The Italians never discovered the bug-in-a-broom. The Popa siblings were finally allowed to leave the embassy for Italy on 3 May 1990.

Links and Other Info