Many thanks to SWLing Post contributor, Don (W7SSB), who writes:
Hi Thomas,
One of my friends has probably the best museum in the history of radio !
Your readers can spend days looking at all the information from the early days to present ! Plenty of pictures!
Don W7SSB
Thank you for the tip, Don! What a deep treasure trove of radio nostalgia!
Many thanks to SWLing Post contributor, Mario Filippi, who writes:
While perusing through a 1959 Lafayette Radio sales flyer, this hybrid radio/sunglasses radio was spotted (see image above). Put a huge smile on my face–a three-transistor, germanium diode model hihi. Runs on a Mercury battery which were common years back.
That is fantastic, Mario! Love it.
I can tell you that I think Spectra-Radio seem a lot cooler than Google Glasses! Thank you for sharing!
Many thanks to SWLing Post contributor, Jerome van der Linden, for the following guest post:
by Jerome van der Linden
From about 1986 I worked for the Broadcasting Division of Telecom Australia (now “Telstra”), in Adelaide, South Australia. This Division of Telecom Australia had responsibility for installation, maintenance and operation of Australian Government funded broadcasting services (radio & TV) such as ABC (including Radio Australia) and SBS. In later years responsibility for this was taken away from Telecom Australia and handed to BAI.
I already had a life long interest in Broadcasting and short wave radio in particular, and I was recruited into a new non technical managerial position in the then new Broadcasting Division of Telecom Australia: it was the perfect job to my mind. In this period of the late 1980s, the organisation was heavily involved in the capital works to get Radio Australia Cox Peninsula (Darwin) back into operation, after it was largely destroyed by cyclone Tracy in 1975, as well as building the three Northern Territory vertical incidence (“shower”) services at Katherine, Tennant Creek, and Alice Springs (VL8K, VL8T, and VL8A respectively). (The NT is probably about the size of a major US state like Texas). Apart from doing my non technical work, I took every opportunity to learn more and get involved in the technical side of things. On one occasion, when I knew that the technical staff would be testing the new transmission facilities on a range of frequencies, I was able to confirm with the onsite technician a booming signal into Adelaide from the Alice Springs transmitter he was briefly testing on 11715kHz in the daytime.
Alice Springs (VL8A) transmitter site in the last year is was operating (Photo by Jerome van der Linden).
As the opportunity arose, and as I was also part of the Southern Cross DX Club, I regularly participated in the Radio Australia DX program (I cannot even remember its name, 30 years later) that was produced by Mike Bird. I also contacted many rural cattle stations (equivalent to “ranches” in the US) that were spread throughout the Northern Territory to get them to report on how they were receiving the new NT HF service broadcasting stations when they came on the air. I saw it as a way of promoting the shortwave radio services throughout the Northern Territory.
My work gave me the opportunity to visit not just each of the new NT HF transmitter stations, but also included several visits to the Radio Australia (RA) facility at Cox Peninsula. While I also saw the old RA Receiving station on Cox Peninsula (dating from the period when signals were received from RA Shepparton and then re-transmitted from Darwin, in the period pre cyclone Tracy), this was at a time when that facility had already been largely dismantled.
In early 1990, I sought and was awarded a contract position with Telecom Australia’s Saudi project, and I was seconded to that from my job in the Broadcasting Division. From my own research, I knew that radio and TV in Saudi Arabia was quite unlike what I was used to, and I made it a point to take with me, on loan, a Sony ICF 2001D receiver. So it was in March 1990 that I arrived in Riyadh on a single person’s contract. I was allocated a 2 storey 3 bedroom villa for my own use among a large number of other identical villas occupied by other Telecom Australia staff, that were all located within a walled compound close to the Saudi Telecom offices.
Almost immediately, it was obvious that I would have to rely on the BBC World Service for my English news, as the KSABS radio services were nearly all in Arabic, and its TV service was even less appealing to me. I managed to string up some long wire antennas on the roof, and it was not long before I was also able to pick up services from Radio Australia. I got in touch with Nigel Holmes, then RA’s Frequency Manager in Melbourne, and was able to let him know how signals were being received in the Middle East, even though South Asia was about the limit of RA’s intended reach at that time. As my office was in the city of Riyadh some distance away, I was allocated a car for my own use, and – having found these were quite common – soon fitted it with a Short Wave capable car radio. In fact it was the one I reviewed in the 1991 WRTH.
The compound housing the many Australians and their families had its own CCTV system, and the Aussies were entertained by a regular supply of Australian VHS TV tapes. The same CCTV network was also used by Australians from the project making out as wannabee disk jockeys with their own programs before 7am and into the evenings.
As many people will recall, in mid 1990, Sadam Hussein, the then leader of Iraq, invaded Kuwait, and there was some concern he might continue and invade Saudi Arabia. As a direct consequence, radio with World news became even more important for the Australians, and the many other expats working in the Kingdom of Saudi Arabia (KSA).
An unexpected benefit to the expats living in Riyadh was the arrival of thousands of US ground forces, who brought with them their very own AFN broadcasting services which operated on FM with their own high pitched professional female DJs who played the latest pop music. This was at a time when this type of music was not heard at all on local Saudi radio, and the only source we had of modern music was the many bootlegged copies of cassette music which were for sale everywhere (in addition to pirated copies of software).
When Sadam Hussein decided to stop international residents from leaving Iraq to travel home, their roles as ‘hostages’ caused international broadcasters to improve their services into the Middle East.
That included Radio Australia, and at least one of its Cox Peninsula transmitters was used to improve the signal to the Middle East in the hours up to its daily shutdown at midnight Darwin time (1430UTC). The strongest signal in those days was a 21MHz frequency, and it mostly boomed in. I recall one evening when the transmitter’s audio sounded very suspect to me. I made a quick international phone call direct to Cox Peninsula; spoke to the duty shift supervisor who I knew personally; described the signal to him; he picked the problem; switched the transmitter off and placed another transmitter online on the same frequency which gave clean audio, that I was able to confirm to him.
A Patriot missiles being fired to intercept a scud missile on 24 Feb, 1991 (Photo by Jerome van der Linden)
It was about this time that I realised my Sony ICF2001D had a feature I could use to the benefit of all my fellow Australians in the compound. In the first instance, I was able to arrange for an audio feed from the 2001D in my villa into the compound’s CCTV system, so that – provided someone plugged the audio in correctly – the signal from my Sony radio’s line out was relayed to every other villa that cared to listen. As I was absent during most of the working day, I used the Sony’s programming feature that allowed for up to 4 separate listening sessions to be set up. Each program required a SW frequency and start/stop times to be programmed. I think each session had a time limit of perhaps 4 hours. This enabled me to set the radio up to relay BBC World Service for most of the day switching automatically to certain frequencies as appropriate, and also provided the people with some brief Radio Australia segments with news from home.
In the period prior to January 1991’s, when George Bush had promised to retake Kuwait if Sadam Hussein did not withdraw, it was also interesting to pick up Iraqi broadcasts intended for (and to try to demoralise) American servicemen. Very strong signals from Baghdad were regularly audible, I seem to recall 11825kHz being one such frequency.
In the event, about January 16, 1991 the allies invaded Kuwait from Saudi Arabia, and made devastating air based attacks on Iraqi facilities. Radio Baghdad’s shortwave service did not seem to last very long after that.
We Australians were told in no uncertain fashion that Iraqi “Scud” missiles were ballistic (hence not accurately targeted), and would definitely not have the range to reach Riyadh in Saudi Arabia. The experts were wrong however, and a couple of scuds did reach Riyadh. As our compound was in the “flight path” from Iraq to the Riyadh airbase the Americans were using, it turned out we were not in the best location! The American forces had “Patriot Missiles” set up to intercept any Scuds that got through, but nobody told us that the Patriots break the sound barrier seconds after being fired, and that they’re only capable of intercepting Scud missiles just before they hit the ground. You can imagine the sonic booms that went off the first night Scud missiles arrived: I have photo in my home that some daredevil took outside, that proves all this.
We had been told to tape up the glass on our villas in case it should shatter, and that we should leave our TV sets tuned to our CCTV channel turned on at all times, with the volume up so that if there was an air raid the staff and their families could be alerted by means of a piercing alarm sound that someone had fiendishly created. And so it was that one Thursday, when Jonathan Marks had scheduled a telephone interview with me for Radio Netherland’s Media Network, we were discussing media events in Saudi Arabia when the air raid alarm went off, and we had to postpone the rest of the interview. I seem to recall that he did call me again later the same night and we finished things off. I never did get to hear the program, or I would have recorded it! As far as I know, it’s not one of the programs that Jonathan has been able to find to include in his on line media vault. If anyone else has a copy of this early 1991 edition, I’d love to hear it again.
As the experts had been wrong in their assessment, it was decided that most of the Australians would be removed from Riyadh, and I was sent to do my work from Jeddah, for about 6 weeks. Again it was a slightly different media environment, and while interesting, I missed the ICF2001D, and bought a cheap multi band analogue portable to be able to keep up to date with BBC World Service News broadcasts.
By early March 1991, most of the fighting was over, and it was safe for me to return to Riyadh, where I worked for another two or three months, before returning to my normal job and family in Australia.
Many thanks to SWLing Post contributor, Charlie (W4MEC), who shares a PDF of the 1940 Sears Roebuck Co. catalog section featuring a wide array of radio gear and test equipment.
This file is hosted on the Pro Audio Design forum and can be downloaded as a PDF (15.8 MB) by clicking here.
It’s a real nostalgia trip reading through the fine Hallicrafters, Hammarlund and National HRO descriptions. Thanks so much for sharing this, Charlie!
Our friends over at the SolderSmoke Daily News recently posted this fun piece from a January 1921 issue of Radio News:
This is great! I’ve often thought a proper ground needed daily watering. And we know it must work: Mars is some serious DX! Professor Nutty T. Wyrlus was way ahead of his time.
Click here to check out the original post at the SolderSmoke Daily News.
Image by Jon Tyson
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 Ron, Valdo Karamitrov, Ronald Kenyon, and the Southgate ARC for the following tips:
When we think of technology our imagination usually takes us to images of the future. But for some, technology links us to the past – whether for nostalgia or for personal reasons
Following our recent feature on vintage technology, we asked you to share some of your collections with us – and people from around the world responded..
Rob Seaward, North Yorkshire, UK: 1949 Murphy A146 radio
I have a collection of older technology which I have collected throughout my life – including old cameras, calculators, hi-fis and radios. I had been interested in music from an early age, but it was really when my father purchased a Bang and Olufsen music centre that my interest in not only music, but style and function really took off.
To me, a lower middle-class grammar school kid living in Bradford, I suddenly had access to a world of real style and glamour.
My favourite piece must be the Murphy A146 console radio designed by Gordon Russell in 1949.
Its nickname is the “Batwing” because of the shape of the back panel. The sound is rich, slightly warm and typical of valve equipment. In its day, the radio cost the equivalent of an average monthly wage, it was built to last and the original valves are still working today.
However, as it pre-dates FM it is a little limited. I’ve had it restored and as part of the process we had a Bluetooth adapter installed which means I can now play my favourite digital music through this wonder from the 1940s – which really amazes people.[…]
Artificially constrained designs can be among the most challenging projects to build, and the most interesting to consider. The amateur radio world is no stranger to this, with homebrew radio designs that set some sort of line in the sand. Such designs usually end up being delightfully minimalist and deeply instructive of first principles, which is one reason we like them so much.
For a perfect example of this design philosophy, take a look at [VK3YE]’s twist on the classic “10-Minute Transmitter”. (Video, embedded below.)
The design dates back to at least the 1980s, when [G4RAW] laid down the challenge to whip up a working transmitter from junk bin parts and make a contact within 15 minutes — ten for the build and five for working the bands. [VK3YE] used the “oner” — one-transistor — design for his 10-minute transmitter, but invested some additional time into adding a low-pass filter to keep his signal clean, and a power amplifier to boost the output a bit.[…]
Since the advent of analog TVs, channel 37 has always been static. Here’s why.
A version of this post originally appeared on Tedium, a twice-weekly newsletter that hunts for the end of the long tail.
I’m endlessly fascinated by stories of the quirks that were built into the TV system where the well-laid plans of the system simply fell apart because it was asked to do too many things.
Nearly five years ago, I wrote about one of them, the tale of how radio broadcasters were able to shoehorn an additional FM station into the radio because of the proximity of TV’s channel 6 to the rest of the radio feed.
So when I was informed that there was another oddity kinda like this involving the TV lineups, I decided I had to take a dive in.
It’s a tale that centers around channel 37, which was a giant block of static in most parts of the world during the 20th century.
The reason for that was simple: it couldn’t fend off its scientific competition.
1952
The year that the U.S. Federal Communications Commission opened up the television system to use UHF, or ultra high frequency signals. The practical effect of this addition of bandwidth was that the total number of potential TV stations increased dramatically, from 108 to 2,051, overnight. The first UHF applications were granted on July 11, 1952, according to The History of UHF Television, a site dedicated to the higher-frequency television offerings.
The radio telescope that became a headache for the television industry
Within a 600-mile radius of the city of Danville, Illinois, population 31,246, are numerous major cities—among them Chicago, Detroit, Milwaukee, Atlanta, Minneapolis, Pittsburgh, St. Louis, Toronto, and Washington, DC.
Nearly the entire length of the Mississippi River fits into that radius. If Danville was located just a little farther to the east, the radius would also include Philadelphia and New York City. For all intents and purposes, a 600-mile radius from Eastern Illinois covers basically the entire East Coast except the state of Florida and the Northeast.[…]
Lou Ottens, inventor of the cassette tape and a CD pioneer died aged 94 at his home in Duizel in Brabant on Saturday, Dutch media report.
Ottens, who studied to be an engineer, started working for Philips in 1952. Eight years later he became head of the firm’s recently introduced product development department. Within a year he and his team had developed the first portable tape recorder of which over a million were sold. Two years later he revolutionised the old reel-to-reel tape system by inventing the cassette tape.
‘I got annoyed with the clunky, user-unfriendly reel to reel system, it’s that simple’, Ottens said later. The new carrier had to be small enough to fit into his jacket pocket, Ottens decided, and he had a wooden model made to determine the ideal size. In 1963 the first plastic encased cassette tape was presented at an electronics fair carrying the slogan ‘smaller than a pack of cigarettes!’ The tapes were quickly copied by the Japanese but in different formats!
Ottens managed to make a deal with Sony to use the mechanism patented by Philips to introduce a standard cassette which was then rolled out globally. Over 100 billion were sold worldwide. Ottens went on to develop the CD, which again became a Sony-Philips standard and which sold over 200 billion.
In 1986 Ottens retired but he was often asked if he was proud of his inventions, which allowed millions to have access to music. ‘I have no ‘pride dial’’ Ottens said in an interview, stressing that both inventions were team efforts. His biggest regret was that that Sony, not Philips, invented what he considered to be the ideal application for the cassette tape, the Walkman. ‘That still hurts,’ he said. Dubious about the recent revival of the cassette tape Ottens said ‘nothing could beat the sound of a CD.’
Read more at DutchNews.nl
https://www.dutchnews.nl/news/2021/03/dutch-inventor-of-the-audio-cassette-tape-dies-aged-94/?
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This morning, I read a message from a ham radio operator who was just awarded a vanity call sign in honor of his father’s 1970s era CB radio call sign. He was obviously very proud of the role CB played in his “formative” radio years.
Although I often only think of the impact my first transistor radio and first shortwave radio had on my life, CB radio also played a major role.
My father entered the CB radio scene in its early days here in the US. His FCC-issued call sign was KJD1166–it’s laser-etched in my memory from hearing him call it so many times when I was a kid.
Dad had a number of radios, but his favorite was a yellow Robyn T-240D (above). As a kid, I really admired this radio; not only was it stylish, but it also had a digital channel display, amazing audio, and that “Range Expand” toggle switch!
In the 1970s, the CB radio scene in my hometown was dynamic and rather well-organized. Every evening, my dad would turn on the radio and connect with a vast network of radio friends. Not only did they have call signs–and used them–but they also had the best CB handles (like “Tombstone Pete,” “Lady J,” and “Robby Rocket”).
The local CB radio scene also had in-person social meet-ups–a place where you could put a call sign and handle to a face. And let me tell you: you’d see a wide array of folks from all walks of life there. A proper melting pot.
Dad also took me to the CB radio repair shop where he’d buy supplies and occasionally get something fixed. I loved looking at the workbench full of half-disassembled radios. At one point in my childhood, all I really wanted to do was have a workbench like that and dig into radios. Even at a young age, I knew how to use a screwdriver and could void pretty much any warranty.
After the FCC did away with call signs, much of the local CB community fell apart. My dad would still check-in with friends on the air the years following, but much less frequently.
No doubt about it: CB radio eventually lead me down the path to ham radio.
While I never participated in the 70s CB radio scene like my dad, my best friend and I used CBs to communicate with each other across the neighborhood in the 1980s.
My buddy grew up in a multi-generation household and telephone time was restricted to grown-up use (and his teenage sister).
CB radio bridged that communication gap for us. At one point, we both used Realistic 5 Watt 40 channel walkie-talkies–it was incredibly fun and effective.
CB radio, and my dad, taught me about the components of a radio transmitting system–the radio, coaxial feed line, antenna and grounding, etc.–and also concepts like power output, standing-wave ration (SWR), and skip.
I still own my 40 channel CB walkie-talkie (a Realistic TRC-217) and my dad still has his Robyn T-240D, although neither have been on the air for decades. Still, I feel very nostalgic about the 1970s radio scene and should certainly give it credit for paving the path to my ham radio ticket.
Did CB radio play a role in your life? Please comment!
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