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I’ve been traveling along the coast of South Carolina this week, and on Thursday, I found myself in the historic town of Conway, South Carolina. I parked downtown and strolled into the past via Papa’s General Store, a small local store with a lot of merchandise––and a lot of charm.
While browsing a display of antiques, I happened to notice a vintage radio perched on a high shelf. Here’s what caught my eye:
I asked, was the radio was for sale? And, indeed, it was. One of the sales clerks pulled it from the shelf, dusted off the top, and read the price: $74. I noted that it was a West German Telefunken receiver. I asked the clerk, Chris, if it worked, and he confirmed that it did; it belonged to his uncle, who had clearly taken very good care of it.
Chris allowed me to plug it in, turn it on, and tune in a couple of local stations…The Telefunken produced beautiful audio without even the slightest hint of a hum. Chris was pleased that I appreciated the radio, and sincerely wanted me to take it home, so he lowered the price a bit further. I agreed, and purchased it without hesitation. Just couldn’t help it…
Chris behind the counter with his uncle’s classic Telefunken.
The Telefunken Superheterodyn Caprice 5451W covers the AM/mediumwave band and FM. It’s a tube radio produced in the early 1960s in West Germany, and is now the only tube-based radio I own that covers the FM band.
Of course, I was very eager to get the Telefunken on the air, so that afternoon I headed to our balcony overlooking the Atlantic, tuned around a bit on the mediumwave band…and was simply amazed at all it could receive. I picked up my smart phone, and with it made a very short recording of the Cuban station, Radio Reloj, on 820 kHz:
My smart phone’s microphone doesn’t begin to do the Telefunken’s rich audio justice, but you can clearly hear Radio Reloj’s ticks and “RR” in Morse Code at the top of the minute (indeed, if you’re listening with headphones, you may also hear crashing waves in the background). Something nearby generated a lot of RFI right on frequency, too , but the rest of the broadcast band had a surprisingly low noise floor.
I also spent some time with the Telefunken on the FM broadcast band; with a simple wire antenna, this worked wonders.
In my humble op, the audio the Telefunken produces is simply beautiful. And so, I’ve got to add, is this vintage radio. See for yourself.
From Marconi and the transistor radio to DAB: the history of radio in the UK
93 years ago this week, the BBC made its first radio broadcast. We look back at some of the most significant events in radio’s history.
On November 14, 1922 the British Broadcasting Company began its first radio broadcast. Since then the radio landscape has changed dramatically.
Radio is still an incredibly popular medium. According to Ofcom’s 2015 Communications Market Report, nine in ten UK adults listen to the radio each week. We listen for an average of 21.4 hours a week, but the way we do this has changed.
Families had to huddle around the radio in the 1930s, but now we can listen to the radio anywhere, anytime using our smartphones. We look at some of the most significant milestones of British radio over the last 93 years[…]
Peter Donaldson (23 August 1945 – 2 November 2015) Image source: BBC
If you live in the UK and listen to the radio, you’ve probably heard that long-time announcer/broadcaster Peter Donaldson died earlier this week. For years–decades actually–Donaldson was a prominent voice on Radio 4.
Donaldson was also well-loved by his listeners, and his colleagues at the BBC (read this touching tribute).
Donaldson had a familiar, calming voice; perhaps that’s why he was asked by the BBC to record a series of informational messages in the event of a nuclear war.
“BBC newsreader Peter Donaldson, who has died aged 70, was to have been the voice of radio bulletins in the event of a nuclear attack. What would have gone out on the UK’s airwaves if the Cold War had turned hot?
“This is the Wartime Broadcasting Service. This country has been attacked with nuclear weapons. Communications have been severely disrupted, and the number of casualties and the extent of the damage are not yet known.”
So began the script, read by Peter Donaldson, which was to go out on British airwaves in the event of nuclear war.”
Here’s an audio clip from Peter Donaldson’s pre-recorded announcement:
While I’m an avid radio listener, I should hope I never hear a similar message over the air (even though Donaldson’s voice is indeed quite calming).
If you’re curious, here is the full Wartime Broadcasting Service official post-attack statement, courtesy of Wikipedia:
This is the Wartime Broadcasting Service. This country has been attacked with nuclear weapons. Communications have been severely disrupted, and the number of casualties and the extent of the damage are not yet known. We shall bring you further information as soon as possible. Meanwhile, stay tuned to this wavelength, stay calm and stay in your own homes.
Remember there is nothing to be gained by trying to get away. By leaving your homes you could be exposing yourselves to greater danger. If you leave, you may find yourself without food, without water, without accommodation and without protection. Radioactive fall-out, which follows a nuclear explosion, is many times more dangerous if you are directly exposed to it in the open. Roofs and walls offer substantial protection. The safest place is indoors.
Make sure gas and other fuel supplies are turned off and that all fires are extinguished. If mains water is available, this can be used for fire-fighting. You should also refill all your containers for drinking water after the fires have been put out, because the mains water supply may not be available for very long.
Water must not be used for flushing lavatories: until you are told that lavatories may be used again, other toilet arrangements must be made. Use your water only for essential drinking and cooking purposes. Water means life. Don’t waste it.
Make your food stocks last: ration your supply, because it may have to last for fourteen days or more. If you have fresh food in the house, use this first to avoid wasting it: food in tins will keep.
If you live in an area where a fall-out warning has been given, stay in your fall-out room until you are told it is safe to come out. When the immediate danger has passed the sirens will sound a steady note. The “all clear” message will also be given on this wavelength. If you leave the fall-out room to go to the lavatory or replenish food or water supplies, do not remain outside the room for a minute longer than is necessary.
Do not, in any circumstances, go outside the house. Radioactive fall-out can kill. You cannot see it or feel it, but it is there. If you go outside, you will bring danger to your family and you may die. Stay in your fall-out room until you are told it is safe to come out or you hear the “all clear” on the sirens.
Here are the main points again:
Stay in your own homes, and if you live in an area where a fall-out warning has been given stay in your fall-out room, until you are told it is safe to come out. The message that the immediate danger has passed will be given by the sirens and repeated on this wavelength. Make sure that the gas and all fuel supplies are turned off and that all fires are extinguished.
Water must be rationed, and used only for essential drinking and cooking purposes. It must not be used for flushing lavatories. Ration your food supply: it may have to last for fourteen days or more.
We shall repeat this broadcast in two hours’ time. Stay tuned to this wavelength, but switch your radios off now to save your batteries until we come on the air again. That is the end of this broadcast.
PRI’s The World featured a story about Peter Donaldson as well, and it was mentioned that perhaps the US has a similar “official” post-attack statement. I’m willing to bet we do, but I’m not sure how it would be disseminated over radio. Unlike the UK, we don’t have local relays of a government broadcaster. We do have the Emergency Alert Service which is directly tied to local and national broadcasting outlets–assuming satellite feeds are still functioning, that is.
The Federal Communications Commission and the Justice Department are investigating a California firm whose U.S. radio broadcasts are backed by a subsidiary of the Chinese government, officials said.
Both investigations come in response to a Reuters report published on Monday that revealed the existence of the covert radio network, which broadcasts in more than a dozen American cities, including Washington, Philadelphia, Boston, Houston and San Francisco. (reut.rs/1Wrflt4)
“Based on reports, the FCC will initiate an inquiry into the facts surrounding the foreign ownership issues raised in the stories, including whether the Commission’s statutory foreign ownership rules have been violated,” FCC spokesman Neil Grace said.
The California firm is owned by James Su, a naturalized U.S. citizen born in Shanghai. Reuters reported Monday that Su’s company, G&E Studio Inc, is 60 percent owned by a subsidiary of Chinese state-run radio broadcaster China Radio International (CRI).
The FCC doesn’t restrict content on U.S. radio stations, except for rules covering indecency, political advertising and children’s programming.
But under U.S. law, the FCC prohibits foreign governments or their representatives from holding a radio license for a U.S. broadcast station. Foreign individuals, governments and corporations are permitted to hold up to 20 percent ownership directly in a station and up to 25 percent in the U.S. parent corporation of a station.
G&E does not own any U.S. stations, but it leases two 50,000-watt stations: WCRW in Washington for more than $720,000 a year, and WNWR in Philadelphia for more than $600,000 a year.
Through a different set of limited liability companies, Su owns, co-owns or leases virtually all the air time on at least a dozen other U.S. stations. Those stations carry G&E content, which is produced largely by his West Covina, California studios or by state-run CRI in Beijing….
Many thanks to SWLing Post contributor and noted DXer, Guy Atkins, for the following guest post:
Wellbrook 1530LNPro vs ALA1530S+ Imperium Loop Antennas
-Guy Atkins
This past weekend I found some interesting results from medium wave DXing with both models of Wellbrook Imperium loop antennas at the “fabled” Rockworks cliffs near Manzanita, Oregon USA. This location has become popular the last few years with Oregon, Washington, and British Columbia DXers due to the signal enhancement at this narrow strip of land approx. 450 feet above the Pacific ocean. The main benefit seems to be splatter reduction of “pest” stations due to the signal blockage of the rock walls blasted into the cliffs for the coastal highway 101. However, a boost of signals around local sunrise is also beneficial, and is a common occurrence near salt water beaches.
Because of the limited space along this scenic coastal highway, all antennas used for DXing need to be both compact and temporary. Wellbrook loops supported on pro-audio speaker stands are a great way to go, and can easily be set up in the pre-dawn darkness.
Comparison
Both Wellbrook loop antennas mounted on “pro-audio” tripod stands right at the cliff edge at Rockworks Cliffs. (Photo: Guy Atkins)
This is a comparison file of weak signal reception with the two models of Wellbrook Communications “Imperium” series loop antennas: the ALA1530LN “Pro” Imperium and the ALA1530S+ Imperium.
Both models of compact, 1-meter dia. active loops are excellent for reception from longwave & medium wave upwards. However, the ALA1530LN “Pro” excels at LW & MW with its low overall noise level and 9dB higher gain, engineered by Wellbrook for improved signal-to-noise ratio (S/N) of up to 10 dB. S/N on the HF bands is reportedly better also.
My laptop running HDSDR software in my SUV; the receiver is an Elad FDM-S2. (Photo: Guy Atkins)
On the weekend of October 24th, 2015 I was DXing at the “Rockworks” cliffs on the Oregon coast near Manzanita, OR. Both of these Imperium series antennas were in use and I was recording the medium wave band with an Elad FDM-S2 SDR receiver. Both antennas were fed with identical 25 ft. lengths of RG-58 coaxial cable.
The demonstration in this video begins with 10 seconds using the ALA1530LN Pro Imperium loop, alternating with 10 seconds with the ALA1530S+ Imperium loop.
The first signal tuned is aviation voice beacon “SQM” from Level Island, Alaska on 529 kHz (400 watts). The signal is weak, but audible as it rises above the noise floor. The reception improvement with the ALA1530LN Pro is evident.
Half way through the recording the frequency is switched to 1710 kHz, where an unidentified station (possibly a MW pirate) is audible playing the 1967 Zombies tune “Time of the Season”. Again, the clip starts with 10 seconds with the ALA1530LN Pro alternating with 10 seconds of the ALA1530S+ Imperium.
Each antenna is a worthy, compact loop for DXing, but for chasing the weakest signals with the best readability I think the ALA1530LN Pro shows its advantages.
Many thanks, Guy, for sharing your loop research!
What I love about your portable SDR set-up, is that you can go to the cliff side, set up your antennas and equipment, record the spectrum on your SDR, then go back home to analyze and listen to what you captured. It takes some of the pressure off while you’re on-site.
This year at the Dayton Hamvention, I purchased the Pixel Technologies RF PRO-1B mag loop antenna. I used it (for the first time) at the PARI DXpedition. We were all impressed with its performance. I would love to compare it with the ALA1530LN Pro at some point in the future.
Yesterday, Tony (K3DY), shared a video (via Twitter) demonstrating his new home brew loop antenna and amplifier.
This is actually a great demonstration of how even a relatively simple, inexpensive loop antenna can improve reception in locations with heavy radio interference. Tony includes the following notes with his video:
“Testing a new receiving loop antenna that I built today. It uses a pre amplifier based on deferential setup of two 2N5109 transistors. Loop is made out of coaxial cable, only the shield is connected to the circuit.
Quick demo on 31 meters, lots of stations at sunset time. No time for further testing but I observed a pronounced directivity below 7 MHz. 75 meters is so quiet that it makes me forget I live in a townhouse. As a comparison, my noise level on 75 meters is at S8 on an end fed [antenna].
I will use this loop primarily for SWLing purposes but I may use it as a separate receiving antenna with my amateur radio equipment.
A lot of fun, loops are fascinating and efficient!
Indeed, Tony! And perhaps the icing on the cake is that loop antennas are so portable, low-profile and easy to deploy. They’re ideal for those living in restricted areas and with picky home owners’ associations.
Inspired by my buddy Vlado (N3CZ), I’ve actually been collecting the pieces to build my own mag loop antenna this winter. I doubt the parts for my loop will exceed ten dollars as I plan to use the shield of some heavy coax for the primary loop and a little PVC for support (much like Tony’s loop).
Tony’s video is inspiring me to go a step further and also build a simple amplifier. Any suggestions or schematics for doing so are most welcome!
Two weeks ago, I received a mystery package in the mail: a copy of the October 2015 issue of CQ Ham Radio magazine, sent directly from the publisher in Tokyo, Japan.
Supplement magazine shipped with the October issue.
Since I can’t speak or read Japanese, I was very confused why I would receive a copy.
Out of curiosity, last week, I opened the magazine to see what sort of articles it contained.
In short: I was very impressed. While I couldn’t read the content, of course, I was able to get an idea of the scope of this magazine–it contained numerous articles, news items, reviews and photos.
I was pleased to note a section that focused on good etiquette for amateur radio exchanges in English. After all, if you are a Japanese DXer, you will need to know enough English to log DX stations around the world as English is the staple DX language. Japanese hams are well known for their excellent on-air etiquette–ask anyone who has been on a DXpedition.
The magazine is thick, too; most of the pages are black and white news print, but there are several color/glossy sections as well. This particular issue was even mailed with a separate supplement magazine containing a history of ham radio ads throughout the years. I thoroughly enjoyed the trip down memory lane.
Once I landed on the page above, I quickly realized why I had been sent a courtesy copy of the magazine: my SDRplay RSP review had been translated and published. It was then I remembered granting permission to have the article translated into Japanese for a ham radio magazine. I had completely forgotten!
I’m honored my review was printed in CQ ham radio, but most of all, it has been fascinating to browse through what appears to be an excellent radio publication. I offer my gratitude to the translator who took the time to edit my article.
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