Tag Archives: shortwave

Chairman of DRM Consortium looks at the current state of shortwave

(Source: Radio World via Maichael Black)

Note that the excerpt below is only a portion of the full article. Read the full piece at Radio World.

Does Shortwave Have a Future?

by RUXANDRA OBREJA

When is the last time you heard a shortwave radio transmission? And why should you put up with possible crackly audio and some interference when we have now internet, satellites, FM and all forms of digital radio?

[…]Shortwave is just short of a miracle, actually. When it is beamed at an angle, it hits the ionosphere. A mirror around the Earth and then it falls like a ball at great distances, beyond the horizon. Thus these transmissions reach listeners over large areas, continents and beyond. Two or three high-power transmitters can potentially cover the entire world.

Shortwave is used not just by international radio stations or radio amateurs but is also essential for aviation, marine, diplomatic and emergency purposes. Shortwave signals are not restricted or controlled by the receiving countries and, as frequencies change in winter and summer, they need to be coordinated internationally.

[…]Digital Radio Mondiale was originally invented to offer medium (AM) and large coverage (HF) and the advantages of the good audio quality and extra multimedia services that can take shortwave into the 21st century. Maybe DRM was ahead of its time. The phasing in of digital broadcasts internationally was not in tandem with the production and sale of receivers, which remains a regional and national business. Since its birth DRM has proven that it is a suitable option for shortwave offering an good digital quality of audio and even short live video at great distance without fading and crackly sound.

Now, at last, there are DRM receivers capable of receiving shortwave, there are broadcasts and interested broadcasters. Quietly and surely shortwave is being re-examined and appreciated for the quality of broadcasts and its potential as a “crisis radio” too. It can become crucial in emergencies when local and regional radio stations, satellite and internet may be off the air due to damage. Broadband is getting cheaper but is limited, 5G will come but not just yet, digital shortwave is here.[…]

Click here to read the full article at Radio World.

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Weekend Broadcasts of VORW Radio International

Bitcoin sent over national borders via shortwave radio

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(Source: cryptovibes.com via Jesse C.)

Bitcoin Sent Offline from Toronto to Michigan Through Shortwave Radio

The protocol used is identified as JS8Call which enables users to connect a shortwave radio to a computer.

Although the crypto winter seems to have prolonged into 2019, it has not stopped various inventions and developments to take place. In January, a cryptocurrency enthusiast in an unknown location in Eastern Europe paid with bitcoin (via lightning network) to broadcast strange messages from blockstream satellite high up in the sky.

In the most recent case, one user sent bitcoin to another user using shortwave radio. He used a free protocol for the shortwave communications to do the transaction. The protocol used is identified as JS8Call which enables users to connect a shortwave radio to a computer. Once they are connected, they can basically send and receive shortwave-transmitted text messages to other JS8Call users without any special license.

[…]The sender never prepared any signed transaction and then sent it to the recipient for them to broadcast it to the blockchain. On the contrary, he sent his recipient a private key that enabled the recipient to transfer the funds to his wallet using only that private key.[…]

Click here to read the full article.

Thanks for the tip, Jesse!

I must say, this is a fascinating concept and, I suppose, I’m not terribly surprised someone made it happen. I’m pretty sure this shouldn’t have been done in the amateur radio 40 meter band.

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Representative from Nuku, PNG asks NBC to reintroduce shortwave

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(Source: PNG Post Courier via Michael Bird)

Member for Nuku Joseph Sungi has called in the National Broadcasting Corporation to reintroduce the short wave band to reach the rural people.

Mr Sungi in a series of questions to Minister for Communication and Information Technology Sam Basil said in the late 1980s, the NBC at the time through the provincial radio stations was using the shortwave band.

He said Radio Sandaun in West Sepik could reach districts like Nuku and parts of Telefomin but that was not the case anymore.

“Does the minister and the department have any plans to make sure that same service under short wave band can be replaced by a new one or improvement can be made so that provincial radio stations can be revived and broadcasted straight so that remote parts of PNG can use to get news and update on what is happening around the country?” Mr Sungi said.

Mr Basil, who is also responsible for Energy, said a lot of people in the rural areas were asking the same question because they could no longer have access to NBC radio.

[…]“I have had discussions with the managing director of NBC and I told them that we want that service to return. We are now moving the system at NBC from analogue to digital so I asked them how we can fit in the short wave system when we do the migration.

“They came up with a few ideas. For some places like Bougainville shortwave is available.

“But I asked them how can we asked the shops to start selling shortwave 1 and 2 transistor radios that receive this wireless signal, a lot of shops are not selling, In places like Bougainville we want to import some radios to distribute so that they carry out the awareness.”

“We are now talking about bringing back these services and improvement.

“We will start in Port Moresby first and roll out to provinces, We are trying our very best to bring the service back because most of our people are in rural areas, A lot of our radio stations now invest into FM band which signals of often blocked by barriers like mountains that is why we want to bring back the shortwave band,” Mr Basil said.

Click here to read the full article at the Post Courier.

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VORW Radio Int. Changes & Schedule for Early 2019

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Hello SWLing Post readers – I would like to provide an updated broadcast schedule for my radio program. A few changes have been made including resumption of broadcasts to Europe via Channel 292.

VORW Radio International is a light-entertainment program which consists of listener requested music of all genres and eras, as well as miscellaneous commentary on various topics.

Thursday 1000 UTC – 5950 kHz – To Mexico
Thursday 1000 UTC – 6070 kHz, 7440 kHz – To Western & Central Europe (New)
Thursday 2000 UTC – 7780 kHz – To Eastern North America
Thursday 2100 UTC – 7780 kHz – To North America and Europe (New)
Thursday 2300 UTC – 9955 kHz – To South America
Friday 0000 UTC – 7730 kHz – To Western North America
Friday 0100 UTC – 5850 kHz, 7780 kHz, 9395 kHz – To Europe and North America
Friday 0400 UTC – 7730 kHz – To Western North America
Friday 2200 UTC – 9955 kHz – To South America
Saturday 2300 UTC – 9395 kHz to North America
Sunday 0100 UTC – 4840 kHz – To North America
Sunday 2200 UTC – 7570 kHz – To North America

If you have the opportunity to hear my show on any of these frequencies, please send in a reception report and let me know how conditions are in your area! You can write to me at [email protected]

Happy Listening!

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A new portable DRM/DAB receiver by Starwaves GmbH

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Many thanks to SWLing Post contributor, Mangosman, who notes:

There is a new digital receiver available. It can receive DRM in all bands from low, medium, high and band 1 & 2 VHF, as well as DAB+ and analog AM and FM.

It cannot receive HD radio because Xpedia charge licensing fees on every receiver and the market is restricted to USA and Mexico.

https://www.alibaba.com/product-detail/DRM-DAB-Digital-Radio-Receiver_11547499.html

Thank you for the tip! It appears this receiver is a product of STARWAVES GmbH, Germany/Switzerland, although I assume it’s manufactured in China based on the bulk order costs.

I’ve reached out to the manufacturer for more details as there are few specifics and no specifications on the Alibaba page.

There are also no details about this radio on the Starwaves website.

If/when we receive more information about this radio, we’ll share it here on the SWLing Post. Stay tuned!

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20 Years Ago: The 1998 Sydney to Hobart Yacht Race disaster – recording of the race controller frequency

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In response to our recent items about monitoring the Sydney to Hobart yacht race, SWLing Post contributor, Neil Howard, shares the following:

In 1998 this race was decimated by massive seas and storms, which sunk 5 boats and tragically lives were lost.

I happened to be recording frequency of the Race controller.

After almost losing the recording , I posted it to YouTube back in 2011:

Click here to view on YouTube.

Description of recording:

HOW this was obtained

This recording of the HF transmissions from 1998 was recorded by me from Queensland, using a newfangled unattended recoding program on the PC and a very ordinary Sangean ATS-803a receiver using a random long wire Antenna – from memory this was on the 8 Mhz Marine band, and is the co-ordination of the search and rescue from the 28th Dec 1998 and covers from around 8:30PM till 10PM – The automated recorded stopped recording when the signal noise dropped below a certain level and thus some was lost.

The recording goes for 30 mins, as that was the limit that was set to save disk space, but there is a lot of empty noise.

I have had this on a disk for 13 years now ( WOW!) and I had a serious disk crash, recently and almost lost everything….. I place this here on youtube so it is not lost to prosperity – The race is on again right now, so This was good timing! I present this recording as it was recorded, warts and all for your education *** I dedicate this to those lost at sea

Highlights — (Times are approximate)

4:11 “Rescue 253” 9A helicopter) locates a life-raft

6:00 “Air force Sydney” is looking for a position of a yacht ” Solo Global Challenge”

6:50 “RTC Canberra” (Who is co-ordinating) has a “hot mic” and is explaining the situation to someone locally

8:35 “Rescue 253” has sighted 2 POB on the life-raft – RTC wants to know if they are from “Winston Churchill”

9:39 Another “hot mic” in Canberra

11:56 “Tiger75” (A Navy Helicopter, I think) has the survivors on board, but still awaiting info on who they are

13:04 13:44 confirmation that there are 2 survivors of the “Winston Churchill” from the life raft, but the tragic news that 3 others had “rolled out” of the raft and are lost (Historical note- these three were listed as drowned)

14:46 Discussion about where the survivors are to be taken by Tiger 75

15:20 Info of the survivors is passed though, along with the news that the life raft they were “in” had no bottom.

16:33 Rescue 253 Says it has heard a beacon & is proceeding to the location

20:00 Another aircraft has gone to the search site from Merimbula (A town in New South Wales)

25:38 Rescue 253 updates beacon location

26:30 Rescue 253 Locates a boat at the beacon site that has been dis-masted & is in serious trouble.

It is interesting (and harrowing) listening.

They still use HF , but after the 1998 debacle, when they found they had little idea of actual positions for S&R, they introduced regular scheds.