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The 'AM death watch' thread... |
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#326 |
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Join Date: Dec 2001
Location: Hampshire
Posts: 8,079
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Quote:
Stereo broadcasts on the BBC for real started in 1966 on Network 3, then were added to Radio 2 around 1972. Central Scotland got stereo in 1974.
Many but not all transmitters were in stereo by the time of the frequency changes in 1978.. There are still a couple in Scotland today that are in Mono for Radio Scotland and Radio Nan Gaidheal. in some areas until just before or just after the local ILR, amazing what competition can do
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#327 |
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Join Date: Dec 2007
Location: East Perthshire
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Quote:
That might have had something to do with it, though Capital in the 1970s sounded better than Radio 1/2 from Wrotham (and Wrotham (obviously) had a top quality feed, even before PCM)
The IBA didn't allow ILR to apply any processing to FM (other than a limiter) so it's odd there was a difference at all. I'm guessing that at that time, a signal from a continuity at BH would have had quite a long and tortuous journey through jack fields and master control (as an analogue signal) before even getting out of the building. |
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#328 |
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Join Date: Dec 2001
Location: Hampshire
Posts: 8,079
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Quote:
Maybe the "better" sound was due to the ILR's having a simpler signal path. Studio desk to control room desk to land line or SHF link to transmitter.
I'm guessing that at that time, a signal from a continuity at BH would have had quite a long and tortuous journey through jack fields and master control (as an analogue signal) before even getting out of the building. |
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#329 |
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Join Date: Jul 2005
Location: Herts
Posts: 6,184
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Quote:
There is probably a debate going on within Polish radio how to procede and still provide a service with Government costs.
Shutting down 225 will help pay for the DAB+ rollout but probably has a lot of opposition? http://energomiar.pl/oswietlenie-dro...m-opis-systemu |
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#330 |
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Join Date: Feb 2013
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Seems the predicted shutdown of Poland on 225 kHz was a bit premature: http://swldxbulgaria.blogspot.ie/201...inate-its.html Quote:
Polish Radio won't terminate its longwave transmissions
It appeared that the information in the international DX press that the Polish Radio is going to switch off its longwave transmitter is wrong. It appeared first on the EuroRadio forum and later was passed to many DX circles and mailing lists, but there's no such information on the "Jedynka" website, nor in its Facebook page. Dominique from Poland got interested in the issue and contacted Roman Czejarek, Polish Radio employee and active participant in the construction of the Solec Kujawski transmitter site. Here is the answer: "I do not know anything about such a plan. No one has given such information, at least here in Poland." |
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#331 |
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Join Date: Jul 2005
Location: Herts
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Norddeutscher Runfunk, Germany has announced that its four mediumwave transmitters on 702, 792, 828 and 972 will close on January 13 2015.
http://www.radioszene.de/75141/letzt...telwellen.html |
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#332 |
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Join Date: Jun 2005
Posts: 716
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Medium wave seems to be the way forward for the unification of Korea: http://www.dailynk.com/english/read....cataId=nk00100 Quote:
Securing a medium wave frequency is paramount to achieving this goal, as these private radio broadcasts are currently only able to reach about 1-3% of North Korea’s population. The South Korean government has taken a noncommittal approach in providing an AM frequency for these stations to broadcast to the North, and as a result, low-powered signals borrowed from other transmitters are being employed, resulting in a relatively narrow reach.
Upon the designation of an AM frequency with the support of the South Korean government, UMG plans to develop a transmission station capable of broadcasting to the entire peninsula, centered on fostering social consensus around unification matters. |
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#333 |
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Join Date: Dec 2009
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Quote:
Medium wave seems to be the way forward for the unification of Korea:
http://www.dailynk.com/english/read....cataId=nk00100 |
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#334 |
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Join Date: Jul 2005
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Quote:
There are discussions in France to switch off 162khz
There are discussions in France to switch off 162khz Quote: President of the CSA (French regulator), Patrice GÉLINET, promises to relaunch digital radio 20.11.2014 - France - France President of the CSA, Patrice Gélinet, addressed the reasons used by the larger radio stations for not going digital: "…four radio stations are already paying dual transmission costs, FM and long wave, at a price significantly higher than via DAB+, and for a poor quality of signal. Radio France spends €6m for its long wave transmissions, which would cost three times less via DAB+”. "And if it points unable to switch to digital terrestrial radio - " I do not have the means to do so, even by closing the medium and long waves " Radio France CEO December 11. http://www.telerama.fr/radio/mathieu...nce,120437.php There is speculation on radio anorak messageboards by French contributors that closure of some/all medium wave transmitters and the long wave one will feature in their budget plans but I can't find anything about this in press reports apart from the above one, which perhaps shows this is under consideration? And more closures: "Russian state television and radio broadcasting operator RTRS February 1, 2015 will disable 30 of 40 medium-transmitters, said a source close to the RBC RTRS. Department of operation RTRS has sent a letter to the regional radio centers. The representative confirmed RTR RBC that the company will continue in 2015 to reduce the broadcasting of radio programs on medium wave, but did not name the specific timing and extent of the reduction of funding for this purpose. The remaining transmitters - thin (1 to 15 kW), they provide the ability to receive broadcasts in a radius of no more than 50 km, the source says RBC. These transmitters are planned to eventually convert to broadcast in FM-band with the same short-range, told the correspondent of RBC deputy director of RTR Sergey Arkhipov." http://top.rbc.ru/technology_and_med...794719bd44450e The article goes on to point out that this could mean that Russian broadcasts into Ukraine will cease. On 11 December Radio Ukraine International restarted broadcasts in Russian on 1431 800kw transmitter 1500-1900 which can be heard in Moscow and St. Petersburg. |
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#335 |
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Join Date: Mar 2005
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re France: I'm not aware of any great fuss following the closure earlier this year of Limoges 792 kHz Nancy 837 kHz and Toulouse 945 kHz - unless anyone knows otherwise....? So I doubt the rest of the France Info MW network would be much missed (apart from by people like us!!).
I suspect though that 162 kHz would be considered more of a radio virility symbol, and that turning it off would be seen as a national defeat, even if I've not noticed anyone using it for many years now. Please keep us posted about developments. |
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#336 |
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Join Date: Mar 2000
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A reminder that tonight 153 177 and 207 kHz (from Germany) carrying DLF and Deutschaldnradio Kultur will close at 2300 UTC (midnight local time).
MW services for this station will close on 31 December 2015 As for France, France Bleu is closing 1278 on 1 June 2015 |
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#337 |
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Join Date: Jul 2003
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Quote:
A reminder that tonight 153 177 and 207 kHz (from Germany) carrying DLF and Deutschaldnradio Kultur will close at 2300 UTC (midnight local time).
MW services for this station will close on 31 December 2015 As for France, France Bleu is closing 1278 on 1 June 2015 Still broadcasting as I type this - maybe someone forgot that they would actually need to go to site to shut it down. 177 & 207 however do seem to have closed. |
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#338 |
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Join Date: Jul 2003
Location: Essex
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DLF is now closed on 153kHz this morning, so SRR Radio Romania now has a clear channel.
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#339 |
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Join Date: Mar 2005
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Quote:
As for France, France Bleu is closing 1278 on 1 June 2015
Thanks for that. So that leaves Rennes 711 kHz Lyon 603 kHz Paris 864 kHz Marseille 1242 kHz Lille 1377 kHz Relays 1404/1494 kHz Nice 1557 kHz Bordeaux 1206 kHz by my reckoning, with Limoges/Toulouse/Nancy having gone, and Strasbourg (the one you mention) in its final months. |
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#340 |
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Join Date: Jul 2005
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Quote:
Well it seems to have gone a bit wrong - at about 2257 GMT on 153kHz they played an announcement that was clearly about DLF closing on long wave, there then followed about 90 seconds of what passes for silence on the Longwave band (actually SRR Radio Romania co-channel), then it seems that the transmitter cut to a backup feed as it started broadcasting DLF again including the national anthem just before midnight and various bells to celebrate the New Year after midnight.
Still broadcasting as I type this - maybe someone forgot that they would actually need to go to site to shut it down. 177 & 207 however do seem to have closed. Recording of 207 closedown from Rolf on a German radio forum http://www.hochstrasse.ch/forum/2014...ing_207kHz.wav |
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#341 |
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Join Date: Jul 2003
Location: Essex
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Quote:
According to reports on DX groups 153 shut down at 2327. At 0400 the control system of the Donebach transmitter switched over to daytime pattern and 153 came back on again. Was on for over an hour before they switched it off again.
Recording of 207 closedown from Rolf on a German radio forum http://www.hochstrasse.ch/forum/2014...ing_207kHz.wav |
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#342 |
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Join Date: Apr 2011
Location: Future EU Scottish Republic
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LOL - the transmitter that didn't want to die. Came back to life twice!
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#343 |
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Join Date: Jul 2005
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Ivo Ivanov, Bulgaria:
Longwave 261 Vakarel is off, mediumwave 747 Salamanovo, 864 Samull, 963 Kardjali, 1161 Doulovo and Targovishte are also off from 2200 UTC Dec. 31. On air is only mediumwave 576 Vidin - Horizont HS-1 incl. Turkish Minority. |
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#344 |
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Join Date: Mar 2000
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A reminder about NDR on
702, 792, 828 and 972 kHz Tomorrow is the final day of broadcasting for NDR on these frequencies. |
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#345 |
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Join Date: Sep 2012
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Quote:
A reminder about NDR on
702, 792, 828 and 972 kHz Tomorrow is the final day of broadcasting for NDR on these frequencies. |
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#346 |
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Quote:
Closing at 09:00 local time, I understand.
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#347 |
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Join Date: Jan 2015
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What's the latest on 252 from Ireland? I know it has been given a repreieve but for how long?
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#348 |
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Join Date: Jul 2005
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Quote:
What's the latest on 252 from Ireland? I know it has been given a repreieve but for how long?
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#349 |
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Join Date: Mar 2000
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The next closure I think is Spain 1224 kHz - on 1 February - or rather at the end of January.
Something similar has been announced for 40 out of 50 Russian transmitters but I cannot be sure about those. |
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#350 |
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Join Date: Jun 2006
Location: London
Posts: 4,453
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Quote:
That might have had something to do with it, though Capital in the 1970s sounded better than Radio 1/2 from Wrotham (and Wrotham (obviously) had a top quality feed, even before PCM)
The IBA didn't allow ILR to apply any processing to FM (other than a limiter) so it's odd there was a difference at all. The IBA didn't allow it, but it was certainly employed by some stations. This is from a thesis submitted as part of a PhD: "A much "beefier signal‟ than that of any other station, BBC or independent, played a central role in the Beacon music presentation. "This was provided by the use of a sound compressor, though presenters deliberately increasing the sound level also played a role. "Flattening the higher and lower levels of the transmitted sound, the use of what might have been an Optimod - a device used by the pirates during the sixties - would have provided the impression of a stronger signal. "Though it has since been indicated that some other ILR stations also employed a similar practice, at Beacon the IBA did not find the device. It did notice the practice of sound manipulation, however. Concern over the Beacon station sound level was such that in March 1977 it warned the station of its excessive sound levels." Source: Independent Local Radio (ILR) in the West Midlands, 1972-1984: a comparative study of BRMB Radio and Beacon Radio by D. P. Allen https://eprints.worc.ac.uk/1430/1/In...,_1972-198.pdf |
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