View Full Version : DW Sines 5980 kHz 21-22.00
New frequency, start today.
azimut 40 º.
Hi Esteves,
bad results on this frequency, because of a weaker signal and interference from the adjacent channnel above, see attachment
73, Simone
Hi,
I had expected more from this frequency. Quite bad results, similar to Simones results. But I had not an interference problem. I only noticed a strong AM Signal at the begining and the end on 5985 khz.
The DRM signal was very strong, but the impulse response looked not clear, it was one very wide signal, so the SNR was quite low. RTL on 5990 khz was always stronger, but that could not cause interference I think.
But the sound quality seemed to be improved. Sounded quite good.
Very nice reception of Deutsche Welle on 5980 kHz.
Audio quality is very good and the music sounds really nice!
We have been hoping for 2 DRM channels 10 kHz apart from each other for some time to find out if there would be any interference between the 2. Now we can be absolutely confident that there is no interference between the 2. The 2 "hats" on the spectrum analyzer are nicely besides each other, with what looks like a 50 Hz wide dip between the 2 signals.
The next step is SFN so that the number of frequencies in use by a broadcaster can be reduced as much as possible!
Ludo
Leemkuil
19-05-2004, 17:14
Very nice reception of Deutsche Welle on 5980 kHz and RTL2 on 5990kHz.
There was no interference.
I have receive both signal at the elektor dds receiver en the Tentec RX300 receiver.
Reception was only with the Fraunhofer software posible.
I have try the Dream software but my pc is little to slow (1Ghz)
I have also put in the Elektor receiver the same extra If filter.
The s/n ratio was 20 to 26db for both stations
As antenna I use a broadband magnetic loop arial combined with CP6 vertical antenna. (A way of noise reduction)
Gerard PE7GL
Hi all,
today, reception was quite OK with 98.1 percent audio. Very strong signal. Adjacent DRM channels are no problem. I remember DW on 15440 and Radio Sawa on 15430 khz.
Very good music, modern Jazz. But an extreme strong AM Signal on 5985 khz killed the last 3 minutes of Fine Young cannibals Jazz version of "Jonny":mad:
I still think, that sound quality is better than on 15440 khz, but I will check that again.
Hi all,
very stable today. The big dropout at 21:40 was caused by an AM station on 5985 khz. They switched on a bit early and switched off a few seconds later.
But can someone please fix the sound quality?
Hi all,
again very strong and stable (S9+30 and more) signal. The dropout again was caused by an AM station on 5985, switched on only for some seconds.
The bass still caused sometimes distortions.
tradio99
23-05-2004, 12:09
22.05.2004 - reception results
Hi,
unfortunately no reception in south Luxembourg - spectrum is very unstable and SNR is too low ...
73 Michel
But can be detected in Jakarta, Indonesia. Screenshot attached.
Hi,
spectrum looked very weird (really !), but reception was close to perfect. SNR oscillated around 20 dB (min: 17; max: 22). Signal level was S9+30 (well, never trust ham radio S-meters ... quite strong though). Sometimes the receiver lost sync for a brief moment even if the audio continued to play normally. No negative interactions with 5990 kHz. At 2145z, AM carrier on 5985 kHz - no interferences. Carrier disappeared shortly after 2146z. I forgot to start the log, but I guess decoded audio percentage was close to 97% durinq the last 30 minutes.
receiver: TS-440S
antenna: active loop antenna
73 Michel
Hi all,
perfect reception. This short AM test everyday at 21:46 UTC on 5985 khz is really a shame. It's like a dog that alwas wants to mark his territory.
Hi,
it's interesting to watch, how the receiver and the decoder software behaves when there are 2 adjacent DRM channels.
Today's reception was quite good, even though there was a high level of delayed impulses (but not as bad as often on 3995 kHz).
I noticed the short AM test mentioned by Carsten at around 21:46 UTC too.
While following the SNR display I found out that the SNR was slightly better when the signal of the neighboring channel (5990 - RTL) went down.
That behavior was caused by my receiver, which was evident when the transmission from Sines was switched off: As you can see from the attached spectrum analyser screenshot, the signal level of the adjacent channel suddenly increased about 10 dB.
I've never seen that kind of overload reaction when the neighboring signal was in AM mode. (Of course I can reduce that behavior by simply turning down the receiver's MGC.)
Regards - DigiBC
From Colombo on June 20th 2004
Hi all,
just listened to DW-Sines on 5980 khz for almost
one hour. Signal was improving during this time
steadily and very impressive how good the Audio
quality is over such a distance to here.
Signal was around S9+5-10 dB at this end.
Dropout around 21:29h UTC was due to adjustment
changes at my soundcard.
Observed same AM carrier interference like Karsten did
at around 21:46h UTC
I would be thankful if someone in Europe could do
monitor with DREAM SWR both signals: DW on 5980 khz
and RTL2 on 5990 khz between 21:00 -22:00h UTC and do a screenshot of the spectrum.
Would be interseting to see how both signals
work shoulder to shoulder.
Hi Wolfgang,
here is what the spectrum looks like, SNR on both frequencies was about 19dB, RTL2 slightly better than DW
73, Simone
Hi Wolfgang,
that's what the spectrum looks like, when I tune to 5985 khz with 20 khz filter.
PaulButler
24-06-2004, 07:22
Getting DW from Sines each morning here. Sync and text mainly, ocassional audio frames.
PaulButler
24-06-2004, 22:54
Sines again this morning. 12-13 dB SN, sunc and text but no audio.
Paul VK3DBP
Hi,
My first attempt on this frequency from Sines. No problem with RTL @ 5990 kHz.
Just a short test: 21:10 - 21:30 UTC.
73's Per - SM0ITS
Hi,
what is going on in Sines? Today no distortions in bass, but what will be tomorrow?
I think the lower bitrate is better for this transmission. Spectrum looked terrible, but no problems with reception, only at 21:47 the usual AM test on 5985 khz.
Hi Carsten!
Realy I dont know why some times we had distrotion, and other times the sound quallity is good! I think that the problem is came from DW satelite network, or maybe from the first audio source. You had reported the trouble in the sound, in 2 diferente transmitters and encoders. So the problem is not the encoder, or software error because 15440 and 13790 are one transmitter with self contened encoder, and the other frequencys are other transmitter and other encoder.
At the moment I`m not in the station during the DRM transmission because I`m working during the night, but I was open the audio control software in the transmitter that working in 15440 and 13790 and the audio level is in the last position that I had put it (-4,5 dB than the usual audio level). The audio transformer is also bypassed. It interesting if you can compare the audio quallity on 15440 and 15545 KHz at same time, because this transmissions are the same source but diferents TXs and encoders. If you can find any diference in bass distortion is possible that the problem is from modulator/encoder, but if the distortion is the same in both transmiters is possible that the problem is not from our sistem.
Hi Carlos,
see the posts from last Saturday (July 10th) in the 15440kHz thread for comparison with 15545kHz
73, Simone
Hi Carlos,
see the posts from last Saturday (July 10th) in the 15440kHz thread for comparison with 15545kHz
73, Simone
PaulButler
09-08-2004, 04:21
Great reception from Sines this morning on 5980.
Note how sensitive the system is to changes in SN - below about 12dB no signal, above this, the system decodes OK but the frame rate varies enormously with small changes in SN.
Cheers
Paul VK3DBP Melbourne
tacitus-ms
10-08-2004, 22:24
At the beginning of the transmission there were a few dropouts, but since 21:25 UTC there were no dropouts any more. Only a few times the SBR did not work for few seconds. Very good sound. Signal: 17.46 kbps/Mode B / 64QAM, no interferences, often fast and strong fading and a lot of multipath signals, but nearly no violation of the guard interval.
tacitus-ms
10-08-2004, 22:35
Very good reception in Münster/Germany. About 45 min. the audio signal was perfect, although the signal became weaker and weaker. Only at the end of this test the signal became as weak that the S/N was too low and dropouts occured. At the same time the fading became stronger and faster.
17.46 kbps, 64QAM, Mode B.
No interferences during the whole test.
Good reception, very good sound quality - one of the pleasant Sines hours, this late one.
Perfect reception, except around 21:45 UTC. The AM interferer makes still its tests around that time.
The music in this hour is good, but it is each day the same.
Hi all,
quite good results from Sines on 5980 kHz,
but with the same break at 21:45 UTC as Carsten
mentioned a month ago......??
regards, Michael
High SNR, much higher than in summer. perfect decoding. Only these AM tests at 21:46 are still there:-(
Hello,
very good reception tonight with some quite impressive SNR peaks (35.6dB!) :-)
I'm just wondering where the carrier at 21:46 UTC originates from...
regards,
Arne
Hi DRMs,
quite good results from Sines on 5980 kHz,
again with the wellknown >problem< at 2146UTC
SNR up to 33dB , nice sound!
regards, Michael
Good reception last night. The first dropout was caused by my extreme strong local broadband noise, second was caused by the strange AM Tests at 21:46.
Rene Schmitz
17-04-2005, 22:18
Hi all,
I'm getting excellent results on this frequency.
There are two dents in the SNR, that were caused by a TX test and Radio Swaboda starting a minute before the full hour on 5985kHz.
(Note that my system clock is 5 min advance of real time.)
And DW seems to have added some more songs to their playlist. :-)
Cheers,
René
Super strong signal. Perfect.
Rene Schmitz
24-04-2005, 19:08
Hi all,
here are my results from yesterday. Strong signal, and perfect decode. Not even the AM test at 21:46 could harm.
Cheers,
René
Rene Schmitz
24-04-2005, 22:10
Hi all,
Today I used a rod antenna (1m).
Results: again strong, and (almost) perfect. (Dream does overestimate a bit, there were some short dropouts, indicated by the small dent in the frames graph.) However the AM Test didn't pose a problem using the Mod Metrics and Bandpass filter.
Cheers,
René
Rene Schmitz
25-04-2005, 22:03
Hi all,
again perfect.
Cheers,
René
(Used Wire Antenna again.)
Hi all perfect as usual. At 21:28 UTC switched 10 dB attenuation on. This causes up to 4 dB SNR increasment.
Hi all,
attached my log. It seems that in the first 10 min there were some problems with the audio on the transmitter side (in the beginning no audio). The rest worked fine.
73
Daniel
Hi all,
from time to time also a monitoring result for this frequency. Almost perfect tonight.
73
Daniel
Rene Schmitz
04-05-2005, 21:40
Hi all,
once again perfect. Using the 1m rod antenna this time. Couldn't notice interference, the program on the neighboring 5985 did start on time.
Cheers,
René
Hi all,
good result, however some fading.
73
Daniel
mitajohn
06-05-2005, 11:47
Hi All,
09:00-11.59, almost perfect until ~90mins, then lost signal.
John
Quite good result last night as usual on this frequency.
73
Daniel
Rene Schmitz
11-05-2005, 22:42
Hi all,
Except for the last minutes it was perfect. The last couple minutes were disturbed by the station on 5985 starting too early.
Cheers,
René
Hi all,
almost perfect
73, Daniel
mitajohn
18-05-2005, 22:06
Hi,
Here is the log of the reception. Not very good but not bad.
John
Rene Schmitz
18-05-2005, 22:18
Hi all,
pretty good, except the last minutes with interference on 5985 from Belarus.
Cheers,
René
Hi all,
good result also here
73, Daniel
mitajohn
21-05-2005, 22:03
Hi,
Not bad for the first report.
John
Hi all,
good reception as usual.
73, Daniel
Signal strong in the beginning, then got weaker with time.
73, Daniel
Very strong signal. Perfect reception.
mitajohn
15-06-2005, 22:11
Hi,
Good reception and great Jazz music in this 30 mins report. The two big drops caused by a strong carrier appeared at the right edge of the DRM spectrum.
John
mitajohn
20-06-2005, 22:06
Hi all,
Near perfect reception and nice Jazz music in this 60 mins report. The big drop (only 2 very short sound breaks) caused by a strong carrier appeared at the right edge of the DRM spectrum, as also seen in my previous report.
John
mitajohn
21-06-2005, 22:04
Hi all,
Totally disappointing reception compared to the yesterday's.
John
mitajohn
23-06-2005, 22:01
Hi all,
A better reception tonight and the known dip at 2145.
John
Rene Schmitz
24-06-2005, 22:09
Hi all,
nearly perfect, with high SNR and the typical disturbance towards the end.
The dip at about 21:25 was caused by myself.
This frequency could do better than 16QAM.
Cheers,
René
mitajohn
29-06-2005, 22:02
Hi all,
Good reception tonight with the known problem.
John
Rene Schmitz
29-06-2005, 22:06
Hi all,
quite good reception, despite a local thunderstorm. Also the effects of the usual QRM at the end were minimal.
Cheers,
René
FritzWue
22-07-2005, 04:49
Very good signal last night, 100%, 29.9dB, getting better to the end:
Good reception tonight, with SNR about 27dB
I am surprised how good this frequency is working shoulder to shoulder to RTL's 5990 kHz
(Besides I love this kind of music)
73 to all, Andreas
Hi all,
almost perfect
73, Daniel
FritzWue
06-08-2005, 22:36
Again very good SNR on 49m band:
FritzWue
18-08-2005, 05:09
The audio quality with 17kbps does not correspond to the quality of the rf signal.
This is not "near FM" audio quality, neither in my home nor in my car stereo, and it will not get any listener change from fm to shortwave!
Hello Fritz and all others,
I didn't find the sound quality so poor. I listened to the programme with my HiFi headphones on. Of course it cannot be compared with DAB, but it is much better than the "telephone sound" on 3995 kHz. Perhaps DW should try a higher bitrate and switch to stereo this hour.
Reception was as good as always, the two
notches were caused by switching on the receiver.
73, Andreas
FritzWue
18-08-2005, 19:13
"telephone sound" on 3995 kHz
Hi Andreas,
that's exactly what I am talking about!
When DW still transmitted in AM on 75m there was no "telefone sound"!
That is the "improvement" since DW is using DRM!
I prefer a good modulated AM signal when I compare that with what DW tries to sell me as improvement on 3995kHz at nighttime.
I will refuse to listen to such nonsense in the future, and I bet that DW will find not many listeners to this sound that is sold as "Near FM Quality" officially.
3995kHz is OT in this thread, but sometimes it is my impression that they stay a lot below what is possible in bitrate and quality just to reduce the costs of their infrastructure.
At the same time they want to let the listeners believe this is THE big improvement, when it is not!
On 5980kHz everybody reports a good signal, so much better quality should be possible.
17kbps is not near fm quality!
mitajohn
19-08-2005, 22:07
Hi all,
Quite good reception tonight, also very good sound.
John
Perfect. Strong, stable and high SNR. DW should use this frequency the whole night. Mode A is not possible here, but 27 kbps should work;)
There is no higher bitrate possible on 3995 khz in the night, because the DRM systems fails often completly with the extreme long IR.
Perfect, with DWT indoor.
I hope that DW will use this frequency the whole night in the future. Much better than 3995.
Perfect once again with DWT.
High SNR with DWT. It isn't far away from my AOR.
Very good reception last night. An I got a new personal SNR record. 36,2 dB with the AOR, nothing to compare with the SAT Schneider module....
Once again very good and stable.
Hi all,
quite good results using the DWT/ loop antenna indoors, see attachment
Simone
Comparision between AOR and DWT.
FritzWue
17-10-2005, 22:09
What a signal!
Good sound with AAC+.
Hi all,
perfect with DWT/indoor loop, see attachment
Simone
Perfect with DRMSWR, but always the same music in this show:mad:
High SNR with DWT. Some problems with DWT and Notebook today.
Comparision between AOR + Wellbrook and DWT + DE31. Both perfect, only SNR is different.
on my today modified FRG7700
this time with my NRD-525G
that's what DRM should be
that's what DRM should be
No,no,no! I can't bear this ******** any more!
Strong and super stable signal,
music I like VERY much but - oh-oh - why did they even reduce the bitrate to telephonic 14,56 kbps ??????
Last summer, when they broadcast at 17,46 kbps I hoped so much, they would try higher bitrates and P-Stereo as well. I even laid some 10 meters of audio cable from my DX shack to the stereo receiver in the living room, but what for?
If DW wants to test, whether North Germany can be reached from Sines the answer is YES. If the question is whether they can convince listeners of the overwhelming sound quality of DRM the answer is %&$§ !!!! (censored).
Good Night
Andreas
Oh yes! 17,26 kbps, P-Stereo & Multimedia. And with a strong and constant signal like this it works.
While today I listened over stereo headphones I promise to re-activate the link to my stereo receiver in the living room.......
NB: The big drop was NOT bad reception but an empty battery which made my laptop fall asleep :mad:
only FST and SNR recorded by DRMSWR tonight (Audio: 0/00 in the logfile), but these are ok (unobserved monitoring at my 2nd location).
just perfect again tonight
Perfect on this frequency.
Again perfect. At 21:30 I turned off the AGC, that caused a slightly higher SNR and a flat signal strength graph;)
Hello to all,
After some RAI logging on 693 and because results here on 693 are better on the 1900-2100 UT range, I tried a little with the Degen TG33 (MW antenna) on the active SW frequencies at this time of the day. And the surprise came from 5980...
SNR rised to 32,8 dB, that is the best ever on my Digital World Traveller (not posted here was the 32,0 dB by CVC from Mosbrunn on the former 31m frequency). I will definitely watch out this frequency again to improve that result... :-)
73, de Stephane
Long-term observations May 2 to 19
as ZIP-archive (http://www.intervalsignals.org/drm-observations)
mitajohn
15-06-2006, 22:04
Hi all,
A very good result for 45mins from a weak signal. Excellent music programme !
John.
Still the best night frequency. Perfect.
mitajohn
23-06-2006, 22:00
Hi all,
A great result tonight and great Jazz music too...
John.
mitajohn
25-06-2006, 22:02
Hi all,
Excellent result tonight but with lower SNR. A very stable signal.
John.
mitajohn
27-06-2006, 22:13
Hi all,
Not so good tonight.
John.
Again perfect results with the Redsun RP2100.
mitajohn
28-06-2006, 22:38
Hi all,
Nearly perfect results, tonight.
John.
mitajohn
29-06-2006, 22:08
Hi all,
Nearly perfect results again tonight.
John.
mitajohn
01-07-2006, 22:03
Hi all,
Here is the result for tonight.
John.
mitajohn
02-07-2006, 22:13
Hi all,
It started very good but at 21H15 a strong and broadband QRM started moving slowly through the DRM spectrum and finaly stopped on 5970-5975 kHz. Through this pass the DRM was killed and restored when QRM stopped outside of the spectrum. In the log you can also see the effect of QRM to the SNR spectrum.
John.
mitajohn
03-07-2006, 22:01
Hi all,
Bad conditions tonight. Only after 21H35 there was audio decoding.
John.
mitajohn
07-07-2006, 22:01
Hi all,
Just perfect ! Excellent Jazz music.
John.
mitajohn
10-07-2006, 22:03
Hi all,
A nearly excellent result which got better and better towards the end.
John.
mitajohn
11-07-2006, 22:43
Hi all,
After a bad start then a good result until the end.
John.
mitajohn
12-07-2006, 22:02
Hi all,
A nearly excellent result. The dropout near the end of log was a tx audio break.
John.
mitajohn
13-07-2006, 22:09
Hi all,
A nearly excellent result.
John.
mitajohn
15-07-2006, 22:31
Hi all,
A nearly perfect result.
John.
mitajohn
16-07-2006, 22:00
Hi all,
Perfect.
John.
mitajohn
17-07-2006, 22:05
Hi all,
The decoding was problematic during almost the half of the log, low SNR too, finally I got a good result.
John.
mitajohn
18-07-2006, 22:01
Hi all,
A strange result tonight.
John.
mitajohn
19-07-2006, 22:05
Hi all,
The tonight's result. After 20mins of problematic decoding then much better.
John.
mitajohn
29-07-2006, 22:11
Hi all,
It started perfectly but at 21H44 a strong and broadband QRM swept slowly the whole DRM spectrum and killed decoding and SNR. In the log you can see the effect of the QRM on the SNR spectrum. This has happened again, see post #107.
John.
mitajohn
30-07-2006, 22:04
Hi all,
An acceptable result tonight from a weak signal.
John.
mitajohn
31-07-2006, 22:09
Hi all,
It started perfectly but after about 15mins the appeared strong QRM swept slowly the whole DRM spectrum and killed decoding and SNR. This has happened again, see posts #107, 119.
John.
No problems here löast night.
Simone
mitajohn
02-08-2006, 11:57
Hi all,
The same QRM last night. In the log graph you can see the effect of the sweep of the QRM to the SNR spectrum vs time. Who is playing this game ?
John.
mitajohn
03-08-2006, 22:05
Hi all,
No QRM games tonight, but low SNR.
John.
mitajohn
04-08-2006, 22:09
Hi all,
After the pass of the QRM the rest was a perfect result.
John.
mitajohn
06-08-2006, 22:03
Hi all,
Perfect results tonight. No QRM.
John.
mitajohn
08-08-2006, 22:00
Hi all,
After the pass of the QRM the rest was a nearly perfect result.
John.
mitajohn
10-08-2006, 22:05
Hi all,
After QRM passed through I started the attached log with nearly excellent results.
John.
mitajohn
11-08-2006, 22:04
Hi all,
I waited for the QRM to pass through and then I started this log. The result was nearly pefect.
John.
mitajohn
14-08-2006, 22:01
Hi all,
Apart for the QRM period the rest was nearly perfect.
John.
mitajohn
16-08-2006, 22:03
Hi all,
I started this log after the QRM pass. The result was nearly perfect, 99.97% CDA.
John.
mitajohn
17-08-2006, 22:01
Hi all,
I started this log just after the QRM passed, the result then was perfect.
John.
mitajohn
18-08-2006, 22:01
Hi all,
A nearly perfect result tonight, with no sign of QRM.
John.
mitajohn
22-08-2006, 22:02
Hi all,
A bit problematic in the beginning of the log, then turn to nearly excellent but with low SNR.
John.
mitajohn
23-08-2006, 22:01
Hi all,
A nearly perfect result tonight.
John.
mitajohn
25-08-2006, 22:02
Hi all,
30 mins of perfect results.
John.
Very strong and perfect last night.
mitajohn
26-08-2006, 22:02
Hi all,
Weak and unstable signal tonight but the result was very good to nearly excellent.
John.
mitajohn
27-08-2006, 22:03
Hi all,
Weak signal also tonight but the result was nearly excellent.
John.
mitajohn
28-08-2006, 21:59
Hi all,
Nearly excellent.
John.
mitajohn
29-08-2006, 22:00
Hi all,
Just perfect.
John.
mitajohn
30-08-2006, 22:01
Hi all,
Perfect.
John.
mitajohn
31-08-2006, 22:04
Hi all,
The sweeping QRM strikes back...
John.
mitajohn
01-09-2006, 22:45
Hi all,
Nearly excellent.
John.
100% CDA although spectrum and IR looked very distorted tonight. So when there are enough reserves in SNR DREAM can do a good job.
(BtW Do not listen to often to this programme, otherwise you will become bored by the close rotation of titles...)
mitajohn
03-09-2006, 22:24
Hi all,
A very good result tonight.
John.
mitajohn
05-09-2006, 22:01
Hi all,
A nearly perfect result tonight.
John.
mitajohn
06-09-2006, 22:01
Hi all,
A nearly perfect result again tonight using the small loop.
John.
mitajohn
07-09-2006, 22:00
Hi all,
Perfect results.
John.
mitajohn
08-09-2006, 22:03
Hi all,
A very good to nearly excellent result with a bumpy SNR.
John.
mitajohn
09-09-2006, 22:01
Hi all,
Perfect results tonight.
John.
mitajohn
10-09-2006, 22:22
Hi all,
No log today. The interfering carrier stood almost still covering 1/5 of the DRM spectrum at its left edge. This precluded decoding. Look at the QRM in the attached file, after the TX signing off.
John.
mitajohn
13-09-2006, 21:40
Hi all,
No log also tonight. When the QRM is present and it is permanent now, no decoding is allowed. It is a pity because this TX was one of my favorites.
Take a look at the SNR spectrum.
John.
mitajohn
17-09-2006, 22:01
Hi all,
In the absence of QRM I got a very good to nearly excellent result.
John.
mitajohn
19-09-2006, 22:34
Hi all,
In the absence of QRM I got a nearly excellent result.
John.
mitajohn
20-09-2006, 22:03
Hi all,
A nearly perfect result.
John.
I have no idea what happened at 21:24 UTC:mad:
Besides that once again excellent results tonight !
mitajohn
25-09-2006, 21:34
Hi all,
A perfect result until the known QRM started and I quit.
John.
mitajohn
01-10-2006, 22:10
Hi all,
A very good to nearly excellent result tonight. The result did not affected too much by the QRM.
John.
Not really strong tonight, but perfect.
Perfect once more. I really hope, that we will hear more transmissions from Sines in the noght in 49m band.
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