Category Archives: Radio History

AWA: Radios and the the Disappearance of Amelia Earhart and Fred Noonan

Earhart and Noonan by the Lockheed L10 Electra at Darwin, Australia on June 28, 1937 (Source: Wikimedia Commons)

Many thanks to SWLing Post contributor, Mark (AE2EA), who shares the following video presentation by the Antique Wireless Association:

Radios and the the Disappearance of Amelia Earhart and Fred Noonan

Today, when GPS provides astounding levels of absolute position accuracy, it can be hard to appreciate the navigational challenges that Amelia Earhart and Fred Noonan experienced on their around the world flight in 1937. Radio played an important part in in their success, and possibly in their failure. AWA member Brian Harrison, KN4R, takes a deep dive into the role of radio in Earhart’s last flight, it’s possible role in her disappearance and how a group of dedicated researchers are recreating Earhart’s and Noonan’s original transmissions using the same type equipment to help solve the mystery of their disappearance, and possibly locate their Lockheed Electra 10E.

Click here to view on YouTube.

Video: The Erres KY-418 radio set WWII era assembly line

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

The Erres KY-418 Radio set assembly line. You must watch this:

Click here to view on YouTube.

My heart goes to the poor guys who work under all that machinery noise with no ear plugs or with no mask when spray paint.

Everything is hand made in-house even the loudspeakers, coils or the rotary switches….

Just remember that WWII is on while it was made and I don’t think the KY-418 was a cheap radio…

Regards, Adi

Thank you for sharing this, Adid. You’re right: there were a few generations of folks who lost much of their hearing early on due to the constant noise on factory floors.

That said, I’ve been enjoying these videos of early radio production lines. Thank you!

Video: Vintage SONY Japan Manufacturing Plants

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Many thanks to SWLing Post contributor, Dave Zantow, who writes:

[Check out this] YouTube video :

Vintage SONY JAPAN Manufacturing Plants: TRINITRON TV, Video Recorder, late 1960-1970s

https://youtu.be/OIZ8pYL1B0M

Click here to view on YouTube.

This very interesting near 12 minute video shows Sony manufacturing plants.

At 2:10 you will see the CRF-150 / 160’s being manufactured.

Thank you so much for sharing this, Dave! This is chock-full of Sony nostalgia!

Radio Waves: Radio Liberty Journalist Bugged, Invisible Battle, RNZ Shortwave After Tonga Eruption, Closing Analog FM in Spain to Save Energy, and Keeping Morse Code Alive

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Radio Waves: Stories Making Waves in the World of Radio

Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Journalist Vitaly Portnikov was found to be “eavesdropped” at his home in Lviv, – Knyazhytskyi (Espeso)

Note this article has been translated in English. Original in Ukrainian found here.

The police promptly responded to the call, but the SBU for some reason delays its response to illegal actions People’s deputy Mykola Knyazhytskyi announced this on Facebook .

“In Lviv, journalist Vitaly Portnikov, who hosts programs on Espresso and Radio Svoboda, found a eavesdropping device at home. It is a voice recorder with the ability to record for a long time. The police were called. They arrived quickly. The SBU was called. They are not going. As a member of the Verkhovna Rada, I ask the SBU to come immediately and disrupt case. We don’t know who installed this device and for what purpose: our services, foreign services or criminality,” the politician said.

Image via Espreso

Vitaly Portnikov commented on the incident for “Espresso”:

“Today, while cleaning the apartment I lived in at the end of February, when the war started, I found a recording device under the bed. The device had an inventory number. I informed the law enforcement authorities about my discovery so that they could investigate this incident.”

The journalist added that he hoped for a high-quality investigation and clarification of all the circumstances of the case:

“After my statement, the investigators of the SBU of the Lviv region conducted an inspection of the premises and seized a device that is a device for listening and recording information. I hope that the relevant structures will conduct an examination and find out by whom and why this device was placed in my apartment.”

Vitaly Portnikov is a well-known Ukrainian journalist, publicist and political commentator. Cooperates with Radio Svoboda and Espresso. On the Espresso TV channel, he creates the programs “Political Club of Vitaly Portnikov” and “Saturday Political Club”. [Click here to read the full article at Espreso.]

The Invisible Battle of the Cold War Airwaves (Bureau of Lost Culture)

This Episode explore three stories of cold war era radio in the USSR: Soviet Radio Jammers, the Russian ‘Woodpecker’ and the Soviet Radio Hooligans

[Click here to listen to the podcast via PodBean.]

We meet with Russian broadcaster Vladimir Raevsky to talk about radio jamming in cold war era Soviet Union.

As East and West super powers square up to each with nuclear weapons, a parallel invisible war is being fought in the airwaves. Continue reading →

From Raw Crystal to Crystal Oscillator: Crystals go to War in 1943

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Many thanks to SWLing Post contributor, Mark (AE2EA), who shares the following AWA video about crystal production during WWII:

Click here to view on YouTube.

Thank you so much for sharing this, Mark. I posted the original film of this a few years ago, but it appears that the YouTube account has been deleted. I’m grateful the Antique Wireless Association has published this. Thank you for the tip!

Radio Waves: Fast Radio Bursts, Czechia DRM AM Trial, Kumartuli Radio Shop, and Ekho Moskvy Off Air

1 Reply

Radio Waves: Stories Making Waves in the World of Radio

Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Astronomers detect a radio “heartbeat” billions of light-years from Earth (MIT)

The clear and periodic pattern of fast radio bursts may originate from a distant neutron star.

Astronomers at MIT and universities across Canada and the United States have detected a strange and persistent radio signal from a far-off galaxy that appears to be flashing with surprising regularity.

The signal is classified as a fast radio burst, or FRB — an intensely strong burst of radio waves of unknown astrophysical origin, that typically lasts for a few milliseconds at most. However, this new signal persists for up to three seconds, about 1,000 times longer than the average FRB. Within this window, the team detected bursts of radio waves that repeat every 0.2 seconds in a clear periodic pattern, similar to a beating heart.

The researchers have labeled the signal FRB 20191221A, and it is currently the longest-lasting FRB, with the clearest periodic pattern, detected to date.

The source of the signal lies in a distant galaxy, several billion light-years from Earth. Exactly what that source might be remains a mystery, though astronomers suspect the signal could emanate from either a radio pulsar or a magnetar, both of which are types of neutron stars — extremely dense, rapidly spinning collapsed cores of giant stars.

“There are not many things in the universe that emit strictly periodic signals,” says Daniele Michilli, a postdoc in MIT’s Kavli Institute for Astrophysics and Space Research. “Examples that we know of in our own galaxy are radio pulsars and magnetars, which rotate and produce a beamed emission similar to a lighthouse. And we think this new signal could be a magnetar or pulsar on steroids.”

The team hopes to detect more periodic signals from this source, which could then be used as an astrophysical clock. For instance, the frequency of the bursts, and how they change as the source moves away from Earth, could be used to measure the rate at which the universe is expanding. [Continue reading…]

CRA Runs DRM Digital AM Trial in Czechia (Radio World)

Transmission company CRA looks at possibility for reusing analog transmission facilities

Czech transmission services company ?eské Radiokomunikace (CRA) is testing the DRM medium-wave digital radio system on 954 kHz.

According to a tweet from Marcel Prochazka, director of legal and regulatory affairs for CRA, the transmissions are originating from ?eské Bud?jovice in South Bohemia and operating at a power of 3.16 kW from a 107-meter HAAT antenna. Continue reading →

Archive of NASWA FRENDX Journals on World Radio History website

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Many thanks to SWLing Post contributor, Tom Gavaras, who writes:

Hi Thomas,

I hope you are having a great summer.

In the event you are not aware, there is a large collection of NASWA magazines available online from 1971-2008 including an issue from 1962.: https://worldradiohistory.com/NASWA_Frendx.htm

I see that there are also many issues from SPEEDX from 1971-1995: https://worldradiohistory.com/Speedx.htm

Best regards,

Tom

Many thanks for the tip, Tom! The World Radio History website is such a treasure trove of radio history and nostalgia!

I opened and read a few 1970s era NASWA journals this morning and am so happy to see quite a few names of SWLs/DXers who are still active radio enthusiasts!