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#2
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wrote in message
... I would expect it to be similar to Radio Romania's DRM broadcast which is intended for Europe. I can hear Romania in DRM here in the Midwest. It is FM quality when it is locked in, but it drops out completely about 10% of the time. The 25 meter analog broadcasts beamed to North America are 100% copy with just a little fading and background noise. I'm only just beginning to look into the possibility of getting set up to receive DRM. Does "FM Quality" have some special meaning with DRM? As I understand it DRM30 isn't really capable of anything one could really truthfully call "FM Quality", even on MF let alone HF. But maybe it's the official name of one of the modes. -- Brian Gregory. (In the UK) To email me remove the letter vee. |
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#3
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On Tue, 27 Apr 2010 17:51:11 +0100, "Brian Gregory [UK]"
wrote: wrote in message .. . I would expect it to be similar to Radio Romania's DRM broadcast which is intended for Europe. I can hear Romania in DRM here in the Midwest. It is FM quality when it is locked in, but it drops out completely about 10% of the time. The 25 meter analog broadcasts beamed to North America are 100% copy with just a little fading and background noise. I'm only just beginning to look into the possibility of getting set up to receive DRM. Does "FM Quality" have some special meaning with DRM? As I understand it DRM30 isn't really capable of anything one could really truthfully call "FM Quality", even on MF let alone HF. But maybe it's the official name of one of the modes. OK. I should not say FM quality. Vatican is mono at something like 17kBits/sec. Very quiet and clear compared to an HF broadcast as long as it stays locked in. Disco Palace relayed by Bonaire is something like 24 kBits/sec in Stereo. I think Radio Australia is 24kBits.sec / mono or stereo - can't remember. However I have never got Australia to lock in, only enough signal to get transmission information displayed. Also, these numbers are from memory. I am guessing these broadcasts are DRM30 since this is the mode recommended for shortwave broadcast. All I can give you is the station data encoded in the signal and dispalyed in the Dream software box. From now on I will give the info dispayed by the software with any reception reports. I have not listened for Bulgaria yet. That will be the first report if I can receive it. Jim |
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#4
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In article ,
wrote: The only station I know of from Europe that does a DRM broadcast beamed to America is Vatican Radio from 2300UT-2330UT on 9755kHz. It is FM quality and stays locked in under good conditions with only a few momentary distortions. Is that from Europe? Or is it a relay from Radio Canada's site? Mark Zenier Googleproofaddress(account:mzenier provider:eskimo domain:com) |
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#6
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On Wed, 28 Apr 2010 20:25:21 -0400, wrote:
On Tue, 27 Apr 2010 21:56:54 GMT, (Mark Zenier) wrote: In article , wrote: The only station I know of from Europe that does a DRM broadcast beamed to America is Vatican Radio from 2300UT-2330UT on 9755kHz. It is FM quality and stays locked in under good conditions with only a few momentary distortions. Is that from Europe? Or is it a relay from Radio Canada's site? Mark Zenier Googleproofaddress(account:mzenier provider:eskimo domain:com) There is a listed relay broadcast earlier on 9800 kHz at 1945-2030UT from Vatican via Canada. This was not monitored. Here is the signal and transmitted information from the DRM Vatican broadcast on 9755 at 2300UT and the earlier DRM Radio Canada broadcast on 9800kHz. Radio Canada on 9800kHz @ 2100UT - DRM signal S9+25dB Info: 17.16 kBits/sec / EEP AAC+ Mono / CA Message box: From Sackville, NB Canada for your listening pleasure Audio: No dropouts. A few quick intermittent distortions. Vatican Radio on 9755kHz @ 2300UT - DRM signal s9+20dB Info: 14.56 kBits/sec / EEP AAC+ Mono / VA Message box: We are sending a DRM transmission on SW 9755kHz for North America from Vatican Radio Santa Maria di Galeria-Vatican City Audio: Periodic dropouts. Multiple intermittent distortions. Appears the broadcast comes from Europe but can't guarantee it. Will check the relay broadcast tomorrow if I can. Jim Vatican relay broadcast from Canada 9800UT @2000UT DRM signal S9+15dB Info: 17.40 kBits/sec / EEP AAC+ Mono / VA Message box: blank Audio: No dropouts. Very few intermittent distortions. So, it appears there is no way to prove where a DRM signal comes from. The info area shows the Vatican (VA) as the source but there is no indication it is relayed by Sackville other than signal quality. Jim |
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#7
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In article ,
wrote: On Wed, 28 Apr 2010 20:25:21 -0400, wrote: On Tue, 27 Apr 2010 21:56:54 GMT, (Mark Zenier) wrote: Is that from Europe? Or is it a relay from Radio Canada's site? .... So, it appears there is no way to prove where a DRM signal comes from. The info area shows the Vatican (VA) as the source but there is no indication it is relayed by Sackville other than signal quality. The reason I asked orignally was that, a couple of years ago, I found the Sackeville DRM schedule on a web page and vaguely remembered a some transmissions not on 9800 kHz. But then, of course, I can't find that printout in my file of random shortwave schedules. (Since I can't get DRM, I probably recycled that page as a grocery list). (did, dig, dig) http://www.rcinet.ca/english/schedule/ It doesn't show up there now. The non-Canadian programs in the DRM schedule now only have the Vatican one on 9800, and a couple of other transmissions (from China and "Top of [something]"). Mark Zenier Googleproofaddress(account:mzenier provider:eskimo domain:com) |
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