Could this be the start of a trend?
India’s public radio and television broadcaster Prasar Bharati has issued orders for six Nautel NX Series 300 kW medium wave transmitters configured for DRM30 transmission. The purchase is part of All India Radio’s (AIR) plans to upgrade facilities throughout India to DRM30 digital broadcasting The DRM digitisation implementation will allow AIR to also use alternative platforms such as podcasting, SMS, webcasting and mobile service. AIR also intends to offer a 24-hour news channel along with other programming. Additional services such as Interactive Text Transmission and disaster warning alerts are also planned.
73, Mike Gorniak, Braham, MN USA via dxld yg (10/12-2012)
While many stations are closing down MW & SW stations, All India Radio is commissioning its new 1000 kW MW transmitter at Rajkot (1071 kHz AM Mode, 1080 kHz DRM Mode) on 10th Sept 12.
Attached please find copy of the official invitation in Hindi. General translation of the same is as follows:
"Director General, All India Radio invites you on the auspicious occasion of dedication to the nation of Super Power Transmitter, Liyara (Jamnagar) by Mr.Vikrambhai Arjanbhai Maadam, Member of Parliament
in presence of Mr.Jawhar Sirkar, CEO, Broadcasting Corporation of india on 10th September 2012 at 11.00 am which will be held at AIR Super Power Transmitter campus.Tel: 0281-2458612
AIR SPT, Liyara (Jamnagar)"
Note: Test transmission from the station has been heard even in Europe.
They are in Simulcast mode viz 1071 kHz AM Mode (870 kW) & in DRM Mode on 1080 kHz.
The sked is as follows on 1071 kHz : (All India Radio, External Service):
Transmission 1: 0015-0430 UTC
Transmission 2: 0830-1130
Transmission 3: 1230-1900
The details are:
0015-0100 UTC Urdu
0100-0200 UTC Sindhi
0200-0430 UTC Urdu
0830-1130 UTC Urdu
1230-1500 UTC Sindhi
1500-1600 UTC Baluchi
1600-1930 UTC Urdu
Their exact postal address is:
Super Power Transmitter
All India Radio
Yours sincerely, Jose Jacob, Hyderabad, India via mwcircle yg (8/9-2012)
DRM TESTS on 243 kHz.
DRM: “Less Energy, More Listeners” at IBC 2012.
The DRM Consortium and Nautel are pleased to announce a special digital DRM broadcast schedule during the
International Broadcasting Convention (IBC) in Amsterdam. Courtesy of transmission infrastructure provider
Teracom A/S, DRM transmissions will be heard during IBC on 243 kHz throughout much of Northern Europe
carrying BBC programming. Teracom installed a DRM capable Nautel NX50 transmitter at the Kalundborg
(Denmark) site in 2011, with this being the first DRM broadcast of this transmitter type on longwave.
Ruxandra Obreja, Chair of the DRM Consortium is very pleased to offer this service during IBC and said: “We
welcome this opportunity to demonstrate how efficient, DRM AM digital broadcasts can be. All those interested
will be able to experience a high quality listening experience”.
On Sunday, 9th September, during Nautel’s DRM event (stand #8. C61) 15:00-17:00, a brief recording of the
broadcast will be played so attendees can hear the clarity of a DRM broadcast over AM.
Hal Kneller, European Sales Manager from Nautel and member of the Executive Committee of the DRM
Consortium said: “We are very pleased to co-sponsor the DRM broadcasts during the IBC Show from the historic
1927 Kalundborg transmitter site”.
Transmitting just 10 kW of DRM provides equal or more coverage than the normal 50 kW of analogue
transmission from Kalundborg. The BBC content will be a variety of music and speech, allowing DRM listeners to
hear the full breadth of FM-like sound quality, available over the very wide coverage area of longwave
transmissions, free of static and fading, as well.
All IBC attendees are cordially invited to Nautel’s DRM event at stand #8, C61, between 15:00-17:00 on Sunday
9 th September, where they can hear the DRM broadcast, see the latest DRM innovations and enjoy some
The DRM theme at this year’s event is ‘Less Energy, More Listeners’, emphasizing DRM’s credentials as a ‘green’
DRM Consortium via Harald Kuhl (3/9-2012)
ALL-DIGITAL AM TESTS CONSIDERED
For years, we’ve heard from some HD Radio proponents that perceived ills of the AM band, like susceptibility to massive interference, could largely be solved if stations went all-digital on a wide-scale basis.
After all, the IBOC system always was envisioned as a transitional one, allowing the industry to operate “all-digitally” someday, rather than in hybrid mode, should it choose to do so and the FCC allow. But this question was seen as one for the distant future, given market realities; and many broadcasters have resisted talk about ever “turning off the analog.”
However, the matter of AM’s health and future is a current industry debate topic. Against that background, members of the NAB Radio Technology Committee now want to test iBiquity Digital’s all-digital AM system to quantify any such improvements. This would entail putting one or more all-digital AM signals on the air experimentally at existing stations.
The idea, I hear, is one of several being bandied about in discussions about how to help AMs, particularly medium- and small-market AMs that lack powerful signals, to remain economically viable.
The committee was formed last year. Television has such a technical committee, and NAB members felt there should be one for radio. Barry Thomas, vice president of engineering at Lincoln Financial Media, stepped away from chairing the NRSC subcommittee on RDS to head this group, as we’ve reported.. .
Full article here http://radioworld.com/article/all-digital-am-tests-considered/215014
Radio World by Leslie Stimson, via Mike Terry, mwdx yg (23/8-2012)
The National Radio Company of Ukraine (NRCU) plans to continue broadcasting on mediumwave with the help of DRM transmitters.
Two channels of Ukrainian radio will go on broadcasting on mediumwave with new DRM digital radio transmitters; this was stated by the Chairman of the State committee for television and radio broadcasting Alexander Kurdinovich in an interview to Telekritika”.
“Taking into account that the National radio company does not have a systematic network for FM broadcasting and will not have it due to the lack of frequency resources, and the insane competition with commercial broadcasters, it was decided to transfer a minimum of two programmes of the NRCU to broadcasts on mediumwave”, he explained. “It is a question of purchasing 15-16 modern digital radio transmitters DRM format, which can work in both digital and analogue radio broadcasting. By placing them on the whole territory of Ukraine, we will be able to provide access to the National radio of at least 85-90% of the population “, noted Mr Kurdinovich.
According to him, the replacement of obsolete analogue transmitters will save money, since the new transmitters consume three times less electricity. He specified that the funds for this re-equipment are not provided, but they must be received at the expense of centralized distribution of capital expenditures. “There is an instruction of the President of the Ukrainian Cabinet of ministers and the Ministry of finance to make specific proposals for this. We have prepared all the technical documentation, the project of creating such a network. The only thing that remains for us is to get financing, announce a tender and purchase transmitters. The problem will be solved seriously and for a long time. After the transition to a digital broadcasting standard we would have created a normal digital radio network”, underlined the chairman of Goskomteleradio.
Source: Media Network, Telekritika via DRM Consortium
Mike Terry via mwdx yg (10/2-2012)
RUSSIA / GERMANY
If it turns out to be an analogue-digital hybrid signal it will not be a "first ever". This has been tested for years from the Oranienburg-Zehlendorf transmitter on 693, demonstrating that this way the analogue signal will be noticeably compromised (rather obvious hiss in real-world environments, lowered modulation depht) to allow also a phone-grade (11 kbps) digital component. If asked for an opinion I would flatly dismiss this mode as nonsense.
It will not be the first ever DRM transmission in Moscow area either, there were previous ones out of the Kurkino transmitters. But I see little point in trying to seek a rationale in PR stuff. And yes, the term "DRM30" has been coined by the London project office since they now try to establish under the term "DRM+" a system for use in the FM band (original references to 120 MHz were just a lame attempt to hide the real intention, which from the beginning aimed at band II, i.e. 87.5...108 MHz).
Jamming a useful signal? Yes, that is to be expected, simply the other transmitters on 549 still carrying Radio Mayak in AM. I don't know how useful they are outside their local coverage areas, considering how Kaliningrad, Olgino, Lesnoy and Samara on 873 produce at a distance, like here in eastern Germany in the afternoon (when skywave from co-channel Oberursel-Weißkirchen does not propagate yet), a horrible echo mess due to different feed delays for each transmitter.
But running on one and the same frequency 60 kW of DRM (which interference-wise equals to 250 kW AM) from Moscow area and an AM service with 600 kW from Krasny Bor, just a bit more than 500 km away, really does not appear to be such a good idea. Or will the AM service of Radio Mayak on 549 simply go away, as it had been planned already years ago?
Kai Ludwig, dxld yg (8/2-2012)
Moscow's first ever DRM30 transmission on air at 3PM local time on 549kHz on a 100 kW transmitter - around 60kW DRM.
http://www.drm.org/ via Mike Terry via mwdx yg (6/2-2012)
Neither sound nor spectrum trace of it (fortunately).Checked: 1500-1540z, Feb 6. a couple of "Mayak" XMTRs are audible (with slight echo) as usual, here.
73, Vlad Titarev, Kremenchuk, UKR via mwdx yg (6/2-2012)
I have a recording at 1200 UT today and nothing at that time, either.
73, Mauno Ritola,
Finland via mwdx yg (6/2-2012)
What`s DRM30? Surprisingly hard to find a straight answer to this; apparently an enhanced form of ``full`` DRM like DRM+, and/or does it refer to also applying it above 30 MHz? Or, horrors, 30 kHz bandwidth?
Glenn Hauser, dxld yg (7/2-2012)
Doesn't that mean DRM "up to 30 MHz" (or LF to HF) as distinct from DRM+ which is above 30 MHz (and up to 120 MHz)?
Andy Lawendel, dxld yg (7/2-2012)
It's Radio Mayak's MW frequency. So I guess it's first ever use of DRM along with a regular AM transmission? Hopefully, there will be no jamming of a useful signal...
Sergei, dxld yg (7/2-2012)
First, everyone all the best for 2012.
Can we conclude, so at the start of a new year, that DRM, as a modulation sort on AM and SW, is over?? Most - experimental - transmitters are switched off again, receivers are not available. At least one advantage, normal AM broadcast are not suffering anymore from the - hiss - that DRM stations were making on the co-channel and neighbouring channels.
For example: Radio Waddenzee/Radio Seagull, 1602 KHz., since today, New Yearsday, free from the disturbing which came from Langenberg 1593 KHz.
Best 73's Mr. W. Prins - Haren The Netherlands (1/1-2012)
As of November 1st 2011 DR (Danmarks Radio) has been authorized by the Danish Ministry of Business and Growth to use Kalundborg 243 kHz and 1062 kHz for transmission of nationwide radio.
Conditions for use:
243 kHz may be used with either analogue AM (max 300 kW) or DRM (max 60 kW).
1062 kHz may be used with either analogue AM (max 250 kW) or DRM (max 50 kW)
More - in Danish - http://www.itst.dk/
Please note, that DR only has got the authorization for using the frequencies; if DR will use it, is another story.
Now, only 243 kHz is used a couple of hours a day for service messages on AM.
By the way, a couple of weeks ago I tried to listen in on 243 kHz from Portugal - but nothing heard!
Ydun Ritz (6/11-2011)
DRM signal simultaneously
In DX LISTENING DIGEST 11-22, June 1, 2011 Ian Baxter, NSW, AUS wrote:
Also I'm not sure if anybody in the group knows this, but from around
May 20th or so, the VL8T new transmitter has reportedly been running
DRM tests. (...).
I've heard a "rumour" that VL8T was running DRM signal simultaneously
with AM (analogue) signal. I'm not sure it there is truth to this or
not, nor if even possible. I heard that there is something about a
technology that enables this on the DRM website (I haven't looked
Gosh, this topic could go for a while. I think I have to look at the
DRM website; perhaps DRM can be carried as a sub-carrier on a SW
carrier like RDS can on FM? I'm over my head on this I have to check
this out later. I need enlightenment --- other than that offered by
Harold on Family Radio :-P
73's Ian Baxter.
It seems this is actually done; I have spotted RNE, Arganda del Rey,
1359 kHz doing just that, but managed to hear them with both DRM
& AM just once so far, as reported in DXLD yg this year.
The explanation as provided by a Carlos Mourato, CT4RK,
who works at the Pro-Funk managed DW relay down in Sines
after I asked him for a comment on that log of mine:
"RNE is using simulcast with the same tx. DRM is attached to an AM
The idea was that no mutual QRM existed, but unless the tx is very carefully
adjusted, especially if the OFDM (*) modulation has its Q component
modulated at a high level, it is very difficult, if not impossible that both
modes actually cause no QRM to each other. In my opinion, you'll have
either one or the other, not both, at least in the present time.
RNE's DRM isn't much interferred by AM. I receive RNE's DRM mainly at night
via NVIS, the signal is very strong and steady, which translates into a
fairly good Signal to Noise Ratio. The quality is very good, no dropouts, and perfectly compatible to FM."
*) Orthogonal frequency-division multiplexing as explained for instance at
I have no recording of that "DRM" as I call it, but what I heard gave
the impression of an AM signal being jammed though perfectly readable. At that time, I was unsure about whether it was coming from two separate txs or just one as it seems to be the case.
Carlos Goncalves POR via dxld yg (10/6-2011)
RNE-1 Arganda 1359 is back on DRM mode only... as usual.
While they're pumping on silly noise into the band, I'm waiting for a reply on this issue from a Spanish DXer.
Carlos Goncalves POR via dxld yg (14/4-2011)
DRM transmissions on 1440 are almost gone, they have
meanwhile been cut back to a token operation between 8 AM and 9 AM local
time. Otherwise the Marnach transmitter is operated in AM mode, in the
time slots 04:30-08:00 and 17:00-02:00 CET or thereabouts.
a large amount of this airtime is leased out to missionaries, CRI and
KBS, which presumably for now saved 1440 from being closed down
altogether. Gossip has it that RTL meanwhile became less willing to pump
money into its Luxembourg radio operations. This gathered, amongst other
Concerning the power used on 1440: It is understood that Marnach has now
Transradio solid-state equipment for 600 kW and that these 600 kW are
the power at which the paid relays are being run. The tube transmitters
(S 4006, they should still have an even older 600 kW
Telefunken/Transradio transmitter with classic plate modulation as
well), in the past run in a pair as 1200 kW, are no longer in routine
For 1440 kHz it must be also noted that the first half of the remaining single hour in DRM is leased out to KBS, which thinks that this is a good way to reach listeners in Germany (well, it's an unnecessarily complicated method to throw money out of the window). So RTL Radio in DRM on 1440 has meanwhile been cut back to a mere 30 minutes per day.
Kai Ludwig, Germany via dxld yg (30/10-2010)
DRM but no receivers
DRM has been around for a while now and many stations have taken up the digital mode over the past few years. It still seems to go under the heading of trial/test transmission however. The most prominent in my region is Radio New Zealand International which broadcasts in DRM nearly 24/7. Often I search aimlessly online hoping degen or tecsun, sangean or sony, some company will release a DRM receiver so I can hear. It is very sad that with DRM broadcasts on the air there is no cheap, compatiable DRM receiver at all. Does anybody know if any compnay will soon consider making a DRM radio? It just seems bizarre that DRM seems to be the future and won't vanish but yet they aren't making any receivers! I did note you can buy/import European DRM radios which are incompatiable in Australia/NZ's power supply.
I hope Degen/Kaito will soon be making a urgently needed DRM shortwave receiver. On another note Australia is progressing slowly with digital DAB radio with more consumers in cities purchasing radios. In Hobart despite the radios readily avaliable we have no DAB signals until a couple of years.
Cheers, Robb Wise,
Hobart, Australia via dxld yg (3/10-2010)
All India Radio tender notice for DRM digital transmitters.
India's public service broadcaster All India Radio (AIR) is putting into practice its plans for digitalisation of radio and has placed a global tender notice for the procurement of several DRM digital transmitters. AIR has invited bids for the supply of 34 new MW transmitters, for the upgrade of 36 MW transmitters and purchase of 5 SW transmitters and other associated equipment. The Research Department of AIR is also going ahead with the purchase of a 500 watt DRM shortwave transmitter for conducting trials on 26 MHz SW DRM transmissions for local coverage. The details of the tender advertisement can be found on the official AIR website:
This procurement process is the start of the AIR's digitalisation plan of ensuring DRM Digital radio coverage for the entire country, thereby providing better and more robust radio services to the listeners.
Earlier this year, AIR had placed orders for the purchase of two 1000 KW DRM capable transmitters which are now being made ready for inspection and delivery. These MW transmitters can be operated in DRM mode, in analogue or in simulcast mode and provide coverage to very large areas in the Indian subcontinent. The transmitters have been manufactured by Thomson Broadcast & Multimedia, A.G.
And recently All India Radio has also confirmed the purchase of 6 mobile DRM transmitters of 10 KW each which are AM/DRM ready. These containerized transmitters are meant to be used in disaster management CASES as they can be easily transported to the affected areas by air/rail/road. A 60 meter medium wave mobile mast goes in another container which can be easily erected together with the transmitter and start broadcasting as and when required. These transmitters are being supplied by M/S Riz, Croatia.
Source: DRM Consortium http://www.drm.org/index.php?p=news_item&uid=212 via Alokesh Gupta,
New Delhi, India, dxld yg (1/7-2010)
DRM broadcasters' user guide released
The DRM Consortium has produced a new up-to-date Broadcasters' User Guide
intended to provide a source of relevant and authoritative information on
the full DRM Digital Radio broadcasting system.
It is aimed at broadcasters considering the transition from analogue to
digital broadcast in the AM and VHF broadcasting bands using what many
believe to be the most advanced and flexible digital radio broadcast system
today. It will also be of interest to manufacturers, service-planners,
administrations and regulatory bodies involved with broadcasting systems and
The document is intended to explain how and why a broadcaster might go
digital, from both technical and commercial perspectives, describe the basic
operation of the DRM system (DRM30 and DRM+), provide a definitive source of
references to key technical standards, including regulatory, co-ordination
and planning information for DRM broadcasting.
The Broadcasters' User Guide also provides detailed information on other
useful features, such as bespoke commercial applications designed to run on
the DRM platform. The Guide has eleven chapters with illustrations and clear
explanations on themes such as the DRM technology and content, the network
infrastructure, receivers, IPR and references to DRM system related papers
and published articles.
"The Broadcasters' User Guide is a reference document for anyone interested
in understanding and implementing this complete global, digital radio
standard. It addresses the specialists and enthusiasts in equal measure and
as such it is the free contribution that the DRM Consortium would like to
make to the broadcast industry and the revitalisation of audio broadcasting
in the digital age", said Ruxandra Obreja, DRM Consortium chair.
The Broadcasters' User Guide is available in booklet format from the DRM
Project Office and also on the DRM website where it can be downloaded in
Source: Media Network, DRM Consortium via Southgate via
Mike Terry, dxld yg (29/6-2010)
Current DRM Broadcast, compiled by Klaus Schneider
Via DXing the Finnish Way (8/3-2010)
AIR to get 2 MW DRM transmitters for Gujarat, W Bengal
All India Radio (AIR) has placed an order for the supply of two 1000 kilowatt DRM capable medium wave transmitters. These will replace old analogue transmitters of same capacity at Chinsurah (West Bengal) and Rajkot (Gujarat), with state-of-the-art solid state transmitters.
The new Megawatt transmitters can be operated in analogue, in simulcast or in DRM mode with automatic change-over between these three operational modes. The transmitters shall provide coverage to very large areas in the Indian sub-continent as well to the West, North, East and Southeast Asia.
This significant purchase was revealed at the recently concluded Broadcast Engineering Society (BES) India’s conference in New Delhi, attended by exhibitors and participants from all over the world. The need for cheaper digital radio sets and content innovation was highlighted by speakers during the event.
All India Radio has already chosen DRM as the technology for converting its vast analogue network to digital. This is part of its digital radio switchover strategy where more than 40 transmitters are to be made DRM capable in the near future. AIR is already broadcasting in DRM from one of its high-power shortwave transmitter located at Khampur near Delhi that covers an area of approximately 800 kilometre radius.
The DRM Consortium says the development underlines the commitment made by India to new technology in general and the DRM standard in particular.
Jaisakthivel, Tirunelveli, India via dxld yg (5/2-2010)
Things seems no to be very clear at RNE about the Arganda-1359 operation.
After starting the 24h. DRM operation recently, the whole past week they were
broadcasting in noise mode only from 1900z to @0700. During daytime the frequency was empty. This morning (Nov. 23rd 2009) they switched off the DRM tx. at 0657z and in some moment along the day they started in AM again. Now, at 2034z I can hear the Arganda tx. in AM. The past week the DRM operation did not contain the scrolling text announcing 24h. operation but only "RNE DRM ARGANDA-1359 Khz".
Spain via emwg yg (23/11-2009)
After several years the medium wave DRM broadcast of RNE (Arganda 1359) has passed its testing phase and has become a regular one on the air 24 hours a day. The ID is "E7C238" and the program is labeled as "RNE DRM Arganda". I think the power isthe same: 10kw.
Spain via mwcircle yg (3/11-2009)
I wonder how large its audience is? Are there any DRM receivers for sale in
73 Steve Whitt via mwcircle yg (3/11-2009)
Well, as in many other places... no receivers=nobody listening to. It is a toy for engineers. And I suspect that few people will be fooled by "DRM, The Intermitent Radio" to buy a new and expensive receiver. Let´s see!
Mauricio Molano via mwcircle yg (3/11-2009)
Does this also mean there are no more analogue transmissions from Arganda Del Rey on 1359 kHz?
73 Herman Boel, emwg yg (3/11-2009)