(Photo by Stephen Cooper)
(Source: BBC Reel)
In a remote forest, a few kilometres from the Chernobyl power plant, the huge Duga-2 radar tower stands as relic of Soviet mismanagement.
(Source: JamesButters.com)
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 Ron, Tracy Wood, and Dennis Dura for the following tips:
TOWAMENCIN — When April ends, the airwaves above the North Penn valley region will be emptier, and so will a little brick building on Snyder Road in Towamencin.
Sitting below five 165-foot-tall radio antennas and one cell tower, that brick building has been the home for six decades of WNPV, the local radio station found at 1440 AM and 98.5 FM.
“We’ve been at it for 60 years, and our mission and our core values are really no different today than they were in October of 1960. It literally is to serve the community,” said Phil Hunt, the station’s General Manager.
“It’s gotten to the point where it’s not sustainable for us to continue to do that. It takes resources to do it properly; those resources, primarily, are people, and we were having trouble making ends meet,” he said.
Hunt announced Wednesday that WNPV will go off the air on April 30, bringing an end to an era of live, local news that began on Oct. 17, 1960. The station’s coverage of local sports, politics, breaking news, and key issues have earned dozens of awards, a handful of which greet visitors as you walk past an old teletype machine through the station’s front door.[…]
The Privat-ear pocket radio was manufactured in the USA and released onto the market by Electronics Systems Corporation in 1949 (1a, b, c). Although small enough to fit in a shirt pocket this is not a transistor radio; it owes its small size to the use of subminiature tubes developed during WWII and was designed as an earphone only model. It predates the first commercially available transistor radio by five years and was an innovative, but ultimately doomed, attempt at realizing an American cultural objective; the creation of a portable shirt pocket radio with mass appeal.
The Privat-ear was invented by Frank L Stuck, a Minister of Lakeland Florida. Born in Washington, Pennsylvania on October 13 1904 to William and Maise Stuck, he was the second youngest of four children (1d, e). He studied Theology at Bethany College, West Virginia from 1924 – 1927 and received a Doctor of Divinity degree from the American Theological Seminary at Wilmington Delaware (1f). Whilst attending College he was one of the founding members of Alpha Pi Alpha, was a member of the Student Volunteers and met and married Iva Myrtle Driggs.[…]
(By Mike Bustell) I try to keep my head down and quietly work behind the scenes helping our salespeople make a killing for our advertisers and our company. However, I had to react to Roger Lanctot’s “Technology Tyranny and the End of Radio” LinkedIn article published in last Friday’s Radio Ink headlines.
How Tesla and Silicon Valley (and other tech giants) feel about local radio is not much different than what our salespeople hear when talking with their local garden center or auto dealer group — that local radio is no longer relevant to bother putting it on their 2020 dashboards.
All these objections are happy opportunities to educate, bond, and sway hearts, minds, and advertising budgets. We have to be happy well-armed warriors with targeted customer-specific information every time we ask for a decision-maker’s valuable time. Once we earn an advertiser’s business we can never stop educating, bonding, or working on helping them grow their business.
Below is the most up-to-date look at the audio sources that $100K+HHI purchasers and lessees for new hybrid and electric vehicles are using. Like Mike Bloomberg taking the salt shakers off of New York City restaurants’ tables, Tesla’s removing easy access to local AM/FM radio stations on their new vehicles’ dashboards shows a similar out-of-touch-with-the-people attitude. Ninety-four and a half percent of $100K+ Age 25+ adults who plan to buy or lease a new hybrid or electric vehicle in 2020 listen to Local AM/FM radio every week — nearly three times that of Spotify, the second most-listened-to audio source every week used by these consumers.[…]
The battle to contain the COVID-19 virus in China has kept most people at home since the end of January.
Life is slowly returning to streets in cities like Shanghai, but face masks are now required in nearly all public spaces, even though they are not recommended for the general public by the Centers for Disease Control or World Health Organization.
Since there is a shortage of masks, most people are still effectively forced to stay home. As Marketplace’s China correspondent, this includes me. My window to the world for a better part of a month has been through radio.[…]
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(Image source: Madrid.org)
In response to our second mystery interval signal challenge, SWLing Post contributor, Dean Bianco replies:
Mystery solved!
This is the “interval signal” (more accurately, a placeholder with a musical station identifier) for the Compañía Telefónica Nacional de España (CTNW) from Madrid, Spain.
They were a point-to-point HF radiotelephone terminal that provided overseas telephone and telegraph services in the days before satellites became common.
As a young SWL, I would receive all manner of strange musical identifiers for these utility stations. Most of these HF telecommunication services had gone to satellite by the early 1980’s. The HF bands were chock-a-block with signals, whether they be broadcast or utility services.
Glad to help!
To verify his claim, Dean shares the following embedded audio file made by Willi Passmann in the mid 1970s (via the excellent UtilityRadio.com website):
Well done, Dean! Thank you once again for coming to the rescue!
In case you didn’t know, dear readers, Dean Bianco is a force to be reckoned with in the shortwave radio world. 🙂 This year, he won the 3rd Annual Fest Trivia Quiz at the 2020 Winter SWL Fest! An impressive accomplishment, indeed. Not only that, but Dean’s an incredibly nice guy, great friend, and always willing to help out those new to the hobby!
Thank you, Dean!
Radio Waves: Stories Making Waves in the World of Broadcasting 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’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!
Many thanks to SWLing Post contributors Paul, Marty, and Michael Bird for the following tips:
After a wartime absence, the January 1946 issue of Radio Craft carried an article by writer Eugène Aisberg. While that name might not be familiar to American readers, Aisberg was a prolific author in the early days of radio, and wrote some of the best treatises on radio for the popular audience. He was fluent in French, Esperanto, German, Russian, and English.
Aisberg was born in Odessa, Ukraine, in 1905, and lived most of his life in France. He was the director of the French magazine Toute la Radio and a prolific author of a number of books. His most popular book, which is still in print, is La Radio? Mais c’est très simple (Radio? But It’s So Simple!) The book, currently in its 29th edition, an extremely solid background covering all aspects of electronics, and is written in a popular, easy-to-read style. While the book was ultimately translated into several languages, it was apparently never published in English.[…]
If you’ve ever lived close to an AM broadcast station, you probably experienced the phenomenon known as fundamental overload. It occurs when a receiving device is functioning entirely properly but unable to reject a strong signal. The receiver might be a wireless telephone, a scanner, or even a TV or radio receiver. The AM signal is completely legal but just too strong, disrupting the function of the receiver or overriding the desired programming.
[…]Hams often experience fundamental overload on the 160 meter band (1.8–2.0 MHz) which is adjacent to the AM broadcast (BC) band (550 kHz–1.7 MHz). Antennas for those frequencies pick up a lot of AM band RF, overloading the input circuits and creating distortion or false signals inside the receiver. The usual solution is to install a high-pass broadcast-reject filter at the receiver input, attenuating the unwanted AM signals below 1.6 MHz while passing the desired 160 meter signals with little attenuation.
So far, so good, but a filter that doesn’t attenuate signals very much above 1.8 MHz while attenuating them significantly in the adjacent broadcast band is not a simple thing to design. There are tables and equations, but they are tedious to work with. Practically, you’ll need to build the filter with standard-value components as well, and that will affect filter performance too. Sounds like a job for some filter design software, doesn’t it?
There are several filter design software packages ranging from simple calculators to sophisticated CAD programs. Luckily for hams and other experimenters, there are plenty of free or low-cost programs to try.[…]
David Anderson did not mince words at a Senate Estimates hearing last October. “There will be job losses,” ABC’s managing director warned. “It’s not something I can quantify at this point in time. There’s still more work to be done.”
Towards the end of March, Anderson will reveal a five-year plan for the national broadcaster. To the frustration of staff, it’s unlikely to specify which parts of the organisation will bear the brunt of these cuts or how many workers they might lose.
Several senior sources spoke about the situation at ABC on the condition of anonymity, given sensitive funding negotiations are yet to be finalised.
“All these media reports claiming the redundancy numbers will be finalised in March are just wrong,” says one ABC executive. “What we need is some clarity [about long-term resourcing] from the government.”[…]
Your computer and the Internet give you free access to over 100 web based shortwave receivers that you can use as if they were your own. Unfortunately, employing these radios to decode data transmissions can be very difficult or impossible — unless you know the secret. So, read on and we’ll guide you through the details of how to do it.
Web based shortwave radios are an amazing new implementation of software defined radios (SDR). These SDRs are free to use and widely available on the Internet. Even more remarkable is that they are located in countries all around the world.[…]
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Your support makes articles like this one possible. Thank you!
Radio Waves: Stories Making Waves in the World of RadioBecause 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 Marty, Dennis Howard, Dennis Dura, Kris Partridge and Richard Langley and for the following tips:
A device that uses electricity generated by plants as its power source has communicated via satellite—a world first.
[…]The device can inform farmers about the conditions of their crops to help increase yield, and enable retailers to gain detailed information about potential harvests.
It transmits data on air humidity, soil moisture and temperature, enabling field-by-field reporting from agricultural land, rice fields or other aquatic environments.
The extremely low power device sends signals at radio frequencies that are picked up by satellites in low Earth orbit. It was developed by Dutch company Plant-e and Lacuna Space, which is based in the Netherlands and the UK, under ESA’s programme of Advanced Research in Telecommunications Systems (ARTES).[…]
This edition of Eccentric Engineer tells the story of the BBC Time Signal and how, over the years, it has just got more complicated.
Every engineer needs to know the time, if only so as to not miss lunch. Since 1924, many Britons have been checking their watches against the BBC time signal, known affectionately as ‘the pips’.
The history of the ‘pips’ is almost as long as the history of the BBC itself. The first transmissions from what was then the British Broadcasting Company began in late 1922 and soon afterwards there were suggestions of broadcasting a time signal under the control of the Royal Observatory at Greenwich – then the arbiter of time in the UK.
No one seems to have seen a need for this degree of precision, but early broadcasts did use their own ad hoc ‘pips’, marking the 8pm and 9pm news programmes with a time signal consisting of the announcer playing the Westminster chimes on a piano and later a set of tubular bells. This proved rather popular with listeners, who could now adjust their clocks and watches daily, so the BBC decided to invest in some more high-tech clocks from the Synchronome Company. These provided audible ‘ticks’, which the announcer then simply counted down.[…]
A joint effort is necessary to bring the digitization of radio to a successful end
Analog shortwave will celebrate about 100 years of existence in 2028 when many hope 5G will have been properly defined, tested and applied, though broadcasting is low on its long list of perceived advantages.
It’s true that shortwave was typically a medium of the Cold War that peaked in 1989 and that afterward its listenership dwindled. Many international broadcasters gave up on it as the post-war transmitters got rustier and the energy bills kept mounting.
After all, when budget cuts are needed, no transmitter will go on strike or write to the press, as happened when the BBC World Service tried to unsuccessfully close its Hindi shortwave transmissions in 2011. In 2020 these broadcasts stopped, when committed BBC Indian listeners, writers and thinkers who opposed it in 2011 did not protest too much.
The slow death of shortwave has been blamed on the internet and satellite. As technology and content are inextricably linked, shortwave created its type of content that is no longer favored by the savvy FM listener, internet user and cellphone obsessed.[…]
A casual observer might think that wireless systems consist primarily of filters connected by the occasional bit of circuit! Block diagrams of transceivers often include as many filters as any other function. This is true at the system level, just as it is at the circuit level — and many circuits behave in a filter-like way, whether intended to be a filter or not! That makes understanding filter basics important for wireless success.[…]
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Your support makes articles like this one possible. Thank you!
Photo by Amanda Slater
Many thanks to SWLing Post contributor, Paul Evans, who writes:
Interesting article on the new monument to radar between Daventry and Towcester in Northamptonshire, UK.
https://www.atlasobscura.com/places/birth-of-radar-memorial
Legend has it that this was conducted around 25-28 MHz, which was the very top end of higher power RF at the time.
The location sits closer to Towcester, although the event is always quoted as having taken place at Daventry (the source, not the receiver).
It’s fascinating that Plessey Research Caswell was set up almost immediately, not very far away and was heavily involved in radar and other solid-state research through to the 1990s.
[Disclosure: the author (Paul) worked at Plessey Caswell and was Two Terminal device Manager at Plessey Microwave, Towcester in the 1980s]
Many thanks, Paul, for sharing this fascinating bit of history.
(Source: RCI.net via David Iurescia)
Today is an auspicious day for RCI. It was February 25, 1945 that the CBC International Service began shortwave broadcasting to Europe. It was designed at the time to provide accurate news to occupied areas in
English French and German, and to provide news from home for the huge contingent of Canadian military personnel serving and fighting in the Second World War.
Since then the “IS” has gone through a variety of changes, including the name which was changed to Radio Canada International in 1970. It has been through several moves, from its first location in a former brothel, to the converted Ford Hotel a few years later, to rented office tower space, to the main headquarters of the French service, Radio-Canada.
It has also gone through a number of language-service changes, from 14 languages during the cold war broadcasting to formerly free countries then under the control of Moscow, to its current five languages, Mandarin, Spanish, Arabic, English and French.
Other changes include the drastic cuts of 2012 which saw some 80 per cent of staff cut and the cessation of shortwave to become its current online operation.
Throughout it all RCI continues to inform on Canadian issues including political, scientific, cultural and societal and provide Canadian viewpoints and positions on world affairs.