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Many thanks to SWLing Post contributor, David Day (N1DAY), for sharing the following guest post:
Crystal Radios – Construction, Listening, and Contesting
By David Day – N1DAY
The date was November 2, 1920 and the world was about to change forever when radio station KDKA out of Pittsburgh PA made its first broadcast of election results from the 1920 presidential election. For the first time in history people knew who won the election before reading about it the next day in the newspaper. Radio had arrived!
However, hearing the election results was not as easy as powering up an AM radio receiver because radio electron tubes had only been invented a few years earlier and they were still too expensive for most people to afford in a radio set. After KDKA’s historic broadcast, large 50,000 watt stations began popping up in all major cities around the world. Even though a tube-driven radio was not yet commonplace, many people listened to these stations on their crystal radios. The frenzy around radio in the 1920’s was not unlike the excitement around cell phones and the internet today. If you didn’t have one, you were simply living in the past.
A family listening to a crystal radio in the 1920’s
Fortunately, in the early 1920’s the crystal radio had been around for a while and it was easy to make or purchase a completed set on a limited budget. The beauty of the radio was that it was a passive device needing no power source other than the radio station’s broadcast that was received by a good antenna about 50 feet long and 15 or so feet above the ground. Crystal radios derived their name from use of galena crystals as detectors. Continue reading →
The seller notes that the unit up for auction has never been opened. The photos of the ICF-PRO80 interior in the auction come from one of their previous listings.
The PRO-80 was one of Sony’s technology showcase receivers, designed in the walkie talkie format. The radios are almost never seen NIB, but aging capacitors often cause audio problems and the tops mounted potentiometers often need cleaning or replacing.
I fully expect this PRO-80 to top $1,000 but the auction winner will have to be prepared for some refurbishing.
Thank you, Dan! I always wanted an ICF-PRO80, but could never afford one back in the day. You’ve got a great point that the winner of this bid may have to re-cap it almost immediately. They’ll need Vlado on speed dial! It will be interesting to see the price this auction fetches.
You might recall that we first heard CHU in the “Battle of Hoth” scenes from The Empire Strikes Back!
In fact, Star Wars Sound Designer, Ben Burtt, gave us some proper insight in a post a few years ago. It was truly an honor corresponding with him directly and learning about his grandfather, Harold Burtt (W8CD).
Radio Waves: Stories Making Waves in the World of Radio
Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers. To that end: Welcome to the SWLing Post’sRadio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!
Many thanks to SWLing Post contributors Paul, Dennis Dura, Dan Van Hoy, Alokesh Gupta, and the Southgate ARC for the following tips:
A barbed wire telephone call didn’t sound great but could quickly warn others about something such as a wildfire.
Historian J. Evetts Haley wrote that, in its time, the old XIT Ranch up in the Texas Panhandle was “probably the largest fenced range in the world.” He recalled that its barbed wire enclosed over 3 million acres of land. At the north end alone, the fence ran for 162 miles. The unique enclosure helped keep in enormous cattle herds, keep out rustlers, and also gave rise to the creative use of a new technology: the telephone.
I’ll come back to the XIT in a moment, but first, consider these smattering of reports from that era. In 1897, The Electrical Review, reported that “on a ranch in California, telephone communication had been established between the various camps . . . by means of barbed wire fences.” The article says the novel use of the phone was a great success and was being used in Texas as well. That same year, the New England Journal of Agriculture was impressed that two Kansas farmers, living a mile apart, had attached fine telephone instruments to the barbed wire fence that connects their places and established easy communication. From the Butte Intermountain in 1902 we see this notice: “Fort Benton’s latest development is a barbed wire telephone communication.” The article points out that people of the range were not all that happy with barbed wire, which they thought was an “evil” that had arrived with the railroad, but they had decided to look at the practical side of its existence and use it to create a telephone exchange that would connect all the ranches to Fort Benton. [Continue reading…]
Schwab Multimedia has lost an appeal to the Federal Communications Commission in a case involving a planned AM station near Los Angeles for which it had a construction permit.
This is a “tolling” case, one that involves the FCC construction clock. The history is complex — the FCC’s summary is 2,500 words long, not counting many extended footnotes — but the upshot is that KWIF in Culver City was never built and, barring further developments, apparently will not be. Its call sign has now been deleted.
Levine/Schwab Partnership, which does business as Schwab Multimedia, had applied in 2004 to build a new AM station in the Los Angeles area. It eventually secured a CP in 2016 for the station at 1500 kHz. [Continue reading at Radio World…]
Dick Smith, VK2DIK has lived an adventurous and extraordinary life. He is a proud Australian, businessman, adventurer, entrepreneur and he single handedly changed electronics and CB/Amateur Radio in Australia.
Dick has recently released his autobiography titled, Dick Smith: My Adventurous Life and tonight we’re privileged to sit down live with Dick, speaking to him about his adventures, including the first solo helicopter flight around the world, his business ventures and being a pioneer for Amateur and CB radio.
The untold story of a shared history is now coming to light.
Berlin, Germany – The 1980s represented a turbulent and transitional period in global affairs. The end of the Cold War was drawing closer, a new era of Thatcher-Reagan neoliberal economic politics was being ushered in, and India was reeling following the assassination in 1984 of its prime minister Indira Gandhi.
Keen to keep up with global current news and affairs, Arvind Srivastava, then a young student studying for a master’s degree in history in Madhepura, a town in the eastern Indian state of Bihar, would gather daily with a group of fellow students. Together, they would tune in to Radio Berlin International (RBI) and its Hindi-language socialist-tilting radio programmes.
From 1959 until German reunification in 1990, RBI served as the German Democratic Republic’s (GDR, or East Germany) international mouthpiece, transmitting news, views and values across the world through its multilingual broadcast platform.
For Srivastava, now 57, and a writer and poet, RBI played a pivotal role in illuminating his global vision during the Cold War.
“In the eighties, most of my friends and I were undergraduate or postgraduate students studying history and political science. In that era of information technology, radio was the only powerful medium,” he tells Al Jazeera.
“When the world was divided into two camps, by nature our country was very close to Soviet ideology. We were curious, and it was a matter of urgent pride for us to be part of the global mobilisation against imperialism, colonialism and racism.”
Srivastava founded the local listeners’ club, also known as a Lenin club, in Madhepura. The club was one of many across India’s Hindi-speaking regions including Punjab and Haryana in the north, Bihar in the east, and the central Indian state of Madhya Pradesh, where students and workers who shared the GDR’s political values listened to RBI together. [Continue reading and listen to this story on Al Jazeera…]
Trailer
Note: if you turn on subtitles, YouTube will translate the dialog in this video.
Many thanks to SWLing Post contributor, Mario Filippi, who writes:
There is a lot of gear for auction from Schulman Auctions. There are several shortwave radios and other vintage gear, even crystal radios. Eye candy for radio buffs.
Many thanks to SWLing Post contributor, Carlos Latuff, who writes:
I just bought this fully operational AM-only pocket radio made in China at the traditional flea market of Praça XV, in Rio de Janeiro, for only 25 reais (around US$ 4.39). It looks more like a response from the Chinese market to pocket radios manufactured in Japan in the 70s.
Maybe one of your readers has more information about this model.
If you have more info about this small AM transistor radio, please comment! Thanks for sharing, Carlos!
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Many thanks to SWLing Post contributor, David Day (N1DAY), for sharing the following guest post:
