Shortwave listening and everything radio including reviews, broadcasting, ham radio, field operation, DXing, maker kits, travel, emergency gear, events, and more
To the extent that you have an opinion on something like high-frequency (HF) radio, you probably associate it with amateur radio operators, hunched over their gear late at night as they try to make contact with a random stranger across the globe to talk about the fact that they’re both doing the same thing at the same time. In a world where you can reach out to almost anyone else in an instant using flashy apps on the Internet, HF radio’s reputation as somewhat old and fuddy is well-earned.
Like the general population, modern militaries have largely switched to digital networks and satellite links, using them to coordinate and command their strategic forces on a global level. But while military nets are designed to be resilient to attack, there’s only so much damage they can absorb before becoming degraded to the point of uselessness. A backup plan makes good military sense, and the properties of radio waves between 3 MHz and 30 MHz, especially the ability to bounce off the ionosphere, make HF radio a perfect fit. [Continue reading…]
There is a new breed of RF receivers known as software-defined radios, and they are revolutionizing the way in which people listen to shortwave (SW) radio, or indeed any form of radio broadcast.
SDRs combine plug-in radio receiver dongles/boxes with personal computers, with the computer serving as the user interface. What makes this interface so useful is that the listener’s screen displays a wide swath of the bandwidth being tuned to, with each station’s signal shown as a visual vertical line that moves and grows/shrinks with its signal strength.
In other words, the listener can literally see what is happening across the band in real time, rather than having to turn the dial or push the Up/Down scanning buttons on a conventional shortwave radio, checking one station at a time. [Continue reading…]
Long Awaited and Finally Released – RTL-SDR V4 Support!
Today the new Release 1.5.1 of STARWAVES DRM SoftRadio App has been released. The following improvements can be expected:
– Added audio output device selector in settings (cog wheel icon) / audio tab,
starting with Android 12:
default, Earpiece, Speaker, Headphones, Bluetooth, HDMI, USB
– Added support for “RTL-SDR Blog V4” Receiver Dongle (all bands)
– Added support for “HackRF” Receiver Dongle (all bands)
– Improved robustness after signal loss or reconfiguration
– Improved sync status display in tuning dialog
– Unknown image formats no longer opened in external web browser window
– Updated decoder modules
Many thanks to SWLing Post contributor, David Iurescia, who shares the following news release via the DRM Consortium:
DRM RNZ Shortwave Transmitter For Pacific Inaugurated
On August 1st the New Zealand Deputy Prime Minister and Foreign Minister came to RNZ House in Wellington to mark the start of the use of the new analogue and DRM transmitter, replacing a 34-year-old transmitter at the Rangitaiki broadcast site.
In a $4.4-million-dollar project, the public broadcaster RNZ has installed a new Swiss-made Ampegon shortwave transmitter.
Chief Executive and Editor-in-Chief Paul Thompson said it’s a significant infrastructure upgrade and secures the future of the RNZ shortwave service into the wider Pacific.
RNZ Pacific broadcasts into the wider Pacific on shortwave 24 hours a day, broadcasting in English and Pacific languages, in collaboration with 22 broadcasting partners across the region.
“The attraction of the shortwave service is that it delivers our unique voice and content to all parts of the Pacific via a signal which can carry over great distances, and achieve good audiences,” said Thompson.
“RNZ Pacific is an essential source of information, especially so during the cyclone season or during a crisis such as the Tonga eruptions,” he said.
RNZ’s Transmission Engineer Specialist Steve White said the project to replace the 34-year-old transmitter at the Rangitaiki broadcast site near Taupo had gone smoothly – being on budget and achieved without disruption to service. “We have appreciated the close working relationship with Ampegon for the new transmitter installation,” he said.
RNZ broadcasts into the wider Pacific on shortwave 24 hours a day, collaborating with 22 broadcasting partners across the region.
Many thanks to SWLing Post contributor, Alan, who shares the following context:
Receiving Radio New Zealand Pacific’s new transmitter.
Please look for this signal from the newest brand new high frequency (SW) transmitter.
It’s on air 00:00 – 04:48 UTC daily on 17675 kHz AM aimed at the Southern Pacific Ocean from 66 Matea Rd, Rangitaiki, Bay of Plenty, co-ordinates -38.8426 176.4297
https://www.rnz.co.nz/international/listen shows no changes to duration and times of transmissions at all with the exception of a new time slot for the new transmitter outlined above.
Many thanks to SWLing Post contributor, Alan, who shares the following video via Cambridge Consultants:
Description:
Digital Radio Mondiale (DRM) is the only universal digital radio broadcasting system that can broadcast on all frequencies, offering unparalleled audio, coverage, cost-efficiency and sustainability when compared to legacy analogue radio services – and yet there’s been no portable, low-power, low-cost radio available bring these benefits to life. Until now.
With the release of the DRM1000 module from CC and CML Micro, billions of listeners worldwide can enjoy access to a world of entertainment, information and life-saving emergency warning functionality through digital radio mondiale services.
This milestone doesn’t just mark a technological advancement; it heralds a new era of possibilities. For broadcasters and manufacturers worldwide, it ignites a fresh wave of innovation, while for listeners in remote or low-income areas, it offers a crucial lifeline to the digital world.
KTWR’s home is on Guam, which makes for some interesting broadcasting
If you’re an avid Radio World reader, you know that we love to highlight unique radio facilities, whether they be local or abroad. If you happen to love that sort of content, you’re in luck!
Broadcasting since 1954, Trans World Radio, or TWR, is a Christian radio distributor that collaborates with U.S.-based radio stations to spread the gospel via local FMs, mediumwave or high-powered AMs and shortwave transmitters.
According to its website, TWR’s programming is broadcast in 200-plus languages on air, online and on the ground in 190 countries. It is celebrating its 70th anniversary this month.
With such an extensive résumé, TWR was bound to have at least a few unique transmitter sites. One such site that we’ll share with you here can be found “Where America’s Day Begins,” floating just above the equator in the western Pacific Ocean.
In Micronesia, TWR’s shortwave member station on Guam, KTWR, serves listeners across most of Asia, spanning Siberia to India to Indonesia. [Continue reading…]
The recently concluded BES Expo 2024 has occasioned the presentation of several new DRM achievements under one single (stall) roof.
For those who could not join the DRM Consortium members in India, here is a tour of the best under the guidance of Alexander Zink, vice-chairman of the DRM Consortium:
Radio Poland is celebrating its 88th anniversary on the air.
The station, launched on March 1, 1936, is part of Poland’s public radio network.
It broadcasts programmes on developments at home and abroad, Polish foreign policy, the economy, business and foreign investment.
Radio Poland, also known as Polish Radio’s External Service (Polskie Radio dla Zagranicy), aims to provide objective and impartial information about Poland and the country’s stance on international affairs.
It reports on developments in Polish society, its daily life as well as scientific and cultural achievements.
The thenews.pl website, part of Radio Poland, is a leading English-language resource for Polish news.
Updated regularly all day, every day, the website covers domestic and foreign affairs, economy and business, culture, sports and human interest stories.
Polish Radio launched shortwave broadcasts in English and Polish in 1936. They were discontinued with the outbreak of World War II in 1939.
After the end of the war in 1945, the shortwave channel Warszawa III resumed external broadcasts.
In 1990, Polish Radio started broadcasting in Ukrainian, Belarusian, Lithuanian, Czech and Slovak.
Then in 1994 the External Service began daily broadcasts in several languages via the World Radio Network.
In 2007, Polish Radio’s External Service launched its news website, now available at www.polskieradio.pl.
Today, Radio Poland broadcasts in Polish and five foreign languages: English, German, Russian, Ukrainian and Belarusian. [Continue reading…]
Much ink has been used recently on the topic of carmakers dropping AM reception capability in cars, especially in EVs. Hence the “for and against” discussions in the U.S., at least, about the “AM for Every Vehicle Act.”
Shortwave reception, with is large coverage possibilities, has often been criticized for its audio quality which can be noisy and subject to annoying levels of variations. In cars, there are other drawbacks like less than optimum antennas, which are mostly tuned for vertical polarization while shortwave is horizontally polarized.
It is undeniable that analog AM Shortwave reception in cars can be quite unreliable, also due to lower average-SNR over time. But all these negative points are not always present. In some places (take Nigeria and the BBC broadcasts) the shortwave transmissions are great, in a quality that is not much different from that of a FM broadcast. [Continue reading…]
Westminster’s famous bell will be heard live from next week after years of only occasional appearances
It is one of the most recognisable sounds in the UK, and one that hasn’t been heard on BBC Radio 4 since New Year’s Eve last year, but from next week the famous bongs of Big Ben will be heard once again on the station.
The most famous bell in the UK will be heard live once again on Monday 6 November, just before the 6pm news bulletin and again before midnight. Listeners will be able to hear the chimes again before Radio 4’s Westminster Hour political discussion programme at 10pm on Sundays.
And after years of only occasional appearances, the chimes will form part of Radio 4’s regular schedule where they will be heard live twice daily and three times on Sundays after new microphones and a live set-up were installed.
To mark the nation’s two-minute silence this Remembrance Sunday, Big Ben will also be heard live on 11 November at 11am, and the bongs will air at 3pm on Christmas Day, before the king’s speech is broadcast on Radio 4. [Continue reading…]
It has been 75 years since Radio New Zealand started broadcasting on short-wave into the Pacific region.
Using two 7.5 kilowatt transmitters in Titahi Bay, near Wellington, Radio New Zealand began short-wave broadcasts to Australia and the Pacific in 1948.
RNZ Pacific’s Moera Tuilaepa-Taylor has this report.
CML Microcircuits (CML Micro) has announced at the IBC 2023 DRM Showcase Event, the full release of the world’s lowest-cost, lowest power, and smallest sized Digital Radio Mondiale (DRM) broadcast receiver module (DRM1000). DRM is the world’s leading digital radio broadcast standard able to provide rich, high quality digital content over vast areas using medium-wave (MW) and short-wave (SW). In addition to high-capacity local broadcasting at Very High Frequencies (VHF).
The DRM1000 is a complete ‘antenna to speaker’ module, containing all hardware, software, IP and patent licenses required for a radio equipment manufacturer to easily realize a dual mode (digital and analogue) DRM capable receiver.
The module offers a 60% cost reduction and 80% power reduction over existing DRM technologies in the market. The device can run effectively from solar or wind-up rechargeable batteries: in addition to small primary cells. Low power operation directly improves accessibility to vital educational and public digital radio services across many emerging nations and opens the great features of DRM to many millions of potential listeners around the world.
In offering the DRM1000, CML Micro wish to enable their customers to design a complete DRM /AM /FM broadcast receiver solution, which is attractive, highly featured and accessible for all. The module allows these innovative receivers to be manufactured locally in emerging nations in addition to traditional technology manufacturing locations.
In addition to announcing the availability of the DRM1000; CML Micro is also proud to announce that the device has been adopted by Gospell Digital Technology Ltd for two new DRM portable radio families to be shown for the first time at the IBC 2023 DRM Showcase Event.
Haochun Liu, Head of Research and Development at Gospell, said: “At Gospell, we’ve always held a steadfast belief in the pivotal role that the accessibility and ubiquity of DRM radios play in enabling people to access high-quality information. This unwavering commitment has driven us over the years to design and manufacture user friendly DRM receivers, constantly pushing the boundaries to make them more accessible and attainable for all. The introduction of the DRM1000 module, with its impressive low-power consumption, cost-effectiveness, and high performance, has been a game-changer. We are truly honored to collaborate with CML Micro in launching two groundbreaking DRM receivers based on the DRM1000 module, namely the GR-220 and GR-221. We’re confident that our combined efforts will not only deliver unparalleled value to people but also pave the way for the next chapter in DRM technology.”
One third of the world’s population remains without an internet connection. Many millions of people will benefit from widespread DRM adoption. Increasing access to DRM enhances public services in remote areas, or where an internet connection is very expensive. This includes a disaster and early warning service that can be used in the event of interruption to communications caused by natural disasters.
CML Micro’s VP of Global Marketing, Matthew Phillips, said: “The benefits of DRM are already being enjoyed by listeners in the Indian market with 70% of the population covered by DRM broadcast services and 6 million new cars already fitted with DRM capable receivers. We believe the market for DRM capable receivers is set for significant growth over the coming years. The DRM1000 provides an ideal platform to serve this emerging market with low cost, battery-powered portable receivers sold in millions of units.”
DRM in the medium-wave or short-wave band delivers FM-like quality to listeners spread over many thousands of square miles, from a single transmitter. This makes DRM the optimum digital radio solution for emerging nations. DRM uses existing long-, medium-, short-wave and very-high frequency (LW, MW, SW and VHF) radio frequency bands, operating seamlessly alongside current analogue services. [Continue reading…]
Fourier analysis. https://en.wikipedia.org/wiki/Fourier_analysis This can transform a serial data stream into a parallel data stream using a different frequency carrier for each path. For example a 16 level quadrature Amplitude modulated data stream at around 99.4 kbit/s is carried on 213 carriers in a channel 95 kHz wide using a transmission frequency between 47 – 230 MHz.
The Digital Radio Mondiale™ (DRM) Consortium has welcomed the decision by Indonesian authorities to adopt the globally recognised, open, and ITU-endorsed DRM Digital Radio Standard for national implementation in a country with a population exceeding a quarter of a billion.
The announcement was made during the DRM IBC Showcase event in Amsterdam. DRM is the only digital radio standard capable of meeting all coverage requirements for national and local public radio stations, as well as commercial and community broadcasters. Moving forward, DRM-based digital radio services will be available in the medium wave (MW) and FM bands, and also in VHF band-III, across all 18,000 of Indonesia’s islands.
Some 275 million Indonesians will soon benefit from a transformative radio experience featuring enhanced audio quality and, importantly, an additional layer of disaster protection via DRM’s Emergency Warning Functionality (EWF). The introduction of modern digital radio services is set to invigorate the entire radio ecosystem and broadcast industry, thereby stimulating both Indonesian and global receiver manufacturing.
The DRM Consortium is keen to continue its close collaboration with Indonesian broadcasters, stakeholder groups, governmental agencies, as well as the receiver, automotive, and mobile phone industries in Indonesia. This concerted effort aims to ensure the successful nationwide roll-out of DRM digital radio services, for the benefit of the entire Indonesian populace.
The next DRM shortwave broadcast of DRM Swiss supporter C.M. Obrecht is scheduled for August 11th UTC 2300 on 12030 kHz. The transmitter (100kW) site is Ascension Island in the Atlantic Ocean (245 degrees) and the broadcast will be carried out by Encompass Media Services with the main target of Brazil. This is the first time that the original music of Mr Obrecht will be beamed out of Ascension. Other similar transmissions of our Swiss supporter reached parts of Asia going as far as Australia, though the broadcasts were originating in the UK and not Ascension.
With commercial radio in Australia turning 100, a new report has shown the industry contributes $1 billion to the nation’s annual GDP, which includes a $320 million boost to regional Australia.
The “Connecting Communities: The Economic and Social Contribution of Commercial Radio and Audio in Australia” report was commissioned by industry body Commercial Radio & Audio and produced by Deloitte Access Economics.
The study found commercial radio stations broadcast 1.1 million hours of Australian content, 2.7 million Australian songs, 42,000 hours of news and 2,200 hours of emergency service content in 2022.
The industry also supports 6,600 full-time equivalent jobs with 38% located in regional Australia.
CRA CEO Ford Ennals said:
“The Connecting Communities report is the first time in 100 years of broadcasting that we have evaluated the economic contribution of radio and its role in delivering trusted, local content to listeners all over the country. These figures show how important it is to have a sustainable Australian radio industry that delivers great audio content free of charge to everyone, everywhere.”
Seventeen million Australians listen to commercial radio. 74% believe radio and audio build a sense of community. $82 million in charitable contributions were made through donations and airtime in 2022. It also plays a key role in music discovery.
NAB and Xperi have argued that the current formula is too conservative
Editor’s note: This story has been updated to include a statement from the National Association of Broadcasters.
A rule change that would allow more U.S. FM stations to increase HD Radio power is closer to reality.
The Federal Communications Commission has adopted a notice of proposed rulemaking that we told you about earlier, doing so a couple of days before its August monthly meeting. The action does not give final approval of the changes but indicates tentative approval and asks for public comment.
“Broadcasters and consumers increasingly prefer digital FM radio because it delivers better sound quality than traditional analog FM service,” the commission stated in its announcement.
“Currently, over 2,000 FM stations broadcast digitally, providing listeners with enhanced sound quality, song information and other data through their FM broadcast radio signals. The NPRM seeks comment on two proposals and asks whether these changes will benefit the public or impact existing FM services.” [Continue reading…]
The new 1,000 kW transmitter will reach from Eastern Europe to the Far East, as well as across South Asia
Pakistan’s national broadcaster broke ground July 30, 2023, on a new transmission facility that will extend its reach from the Mediterranean to the Pacific.
The modernization project marks a significant milestone for Radio Pakistan, including adding capabilities to broadcast in the Digital Radio Mondiale digital radio standard.
The project centers on a new 1,000 kW DRM transmitter being installed at the Radio Pakistan high-power transmission complex in Rawat, near the capital Islamabad. The new facility is expected to cost 4 billion rupees (nearly US$14 million) and is set to be completed in 2025.
Federal Minister for Information and Broadcasting Marriyum Aurangzeb oversaw the groundbreaking, noting that the project will extend Radio Pakistan’s reach to 52 nations across South Asia, Central Asia, the Far East, Middle East, and into Eastern Europe. [Continue reading…]
