OldieStar Radio on 1575 kHz [Archive] - DRM Software Radio Forums

dk8cb

08-08-2006, 05:14

Quite a bad result this morning with a long impulse response and in addition on-channel interference which could not be nulled.

OFDM symbols were transmitted but without audio.

See screenshot for spectrum, WMER and impulse response.

Roland

dk8cb

08-08-2006, 05:15

And here is the log.

Roland

simone

08-08-2006, 05:20

OFDM symbols were transmitted but without audio.
Roland

Hi Roland,
there was audio but very low level see attachment, with speakers set to maximum I could hear some music.
Simone

dk8cb

08-08-2006, 05:29

Hi Roland,
there was audio but very low level see attachment, with speakers set to maximum I could hear some music.
Simone

Well, I didn't hear any with speakers adjusted for normal but low audio levels but I was also busy trying to find an optimum loop position but to no avail...

I have read that an NVIS antenna is used and the results are exactly of the kind that I expected. I think one should forget about DRM and NVIS antennas, they just don't fit together.

Roland

DE8MSH

08-08-2006, 06:32

Not much, but a signal for me:

dk8cb

08-08-2006, 23:24

At night, the impulse response looks even worse than it did in the morning when it was not completely dark anymore.

Not much audio can be decoded from a signal with so many echoes.

If audio can be decoded, it is only barely audible even if all volume sliders are fully up here.

Roland

dk8cb

08-08-2006, 23:38

Not worth further logging.

Roland

simone

09-08-2006, 05:13

Bad results again, a weak signal and co-channel interference.
Still the audio problem with extremely low audio level.
Simone

DE8MSH

09-08-2006, 05:38

This is what I get with my Aircoil:

DRM-OM

09-08-2006, 05:42

:( but nothing to be heard :(
WDR on 1593 works better - and is in similar distance with less power ...

dk8cb

10-08-2006, 00:59

Reception of the DRM signal as such was much better than on the days before. However, interference was often strong and although the interfering carrier was only a few dB above the averaged DRM signal, it still did cause a deep notch in the WMER vs carrier plot.
A lower bitrate at a better protection level (B/A = 0/0) might improve the situation.

The impulse response was considerably shorter than on the days before, it still had a lot of peaks but their amplitudes fell off much faster than before.

Were there any changes on the antenna used at night or was it just a change in propagation that made the difference?

The audio problem was unchanged so it was / is still impossible to listen to normal audio.

Roland

simone

10-08-2006, 05:20

Not too bad in the last 30min this morning when I tried to listen, but still after 3 days audio levels are so low that listening is nearly impossible!
Simone

dk8cb

10-08-2006, 23:40

Finally with audio!
But audio quality ought to be better, far too much compression is being used with audio pumping when the compressor (it often sounds a lot more like a limiter!) tries to achieve a constant output level. There is also distortion in high audio frequencies with music but especially during voice jingles. All in all an awful sound!

Here is a screenshot showing how it looked tonight shortly after midnight local time. At 460 km distance from Burg, the impulse response seems to be sufficiently short for mode B. However there is sometimes interference from an on-channel station and it is causing dropouts. The loop antenna was directed almost at true north pointing directly towards Burg.

I wonder if Oldiestar Radio is affiliated with the RTL group. The jingles are very similar to those on RTL and they are of the same style, also the same voice is used.

Signal strength is not bad, but conditions also seem to be rather good today, at least in northerly directions.

Roland

dk8cb

11-08-2006, 00:15

Here is an audio sample of a jingle which demonstrates how much audio is distorted. In reality, the distortion sounds even worse but the MP3 encoding process at this bitrate is a bit gracious in this respect.

Roland

dk8cb

11-08-2006, 00:21

And here is a 70 minutes report. Over the course of logging, the signal got weaker, the channel's impulse response often looked worse and interference became stronger.

Roland

EDIT: Report file replaced with one which also shows distance information

simone

11-08-2006, 06:33

Good results in the last 40min this morning, the new configuration (using mode B, 18.4 kbps) seems to work much better, also audio levels have improved, audio quality could be better.
Simone

carknue

12-08-2006, 19:30

Not so good last night.

simone

12-08-2006, 20:53

Results from Leipzig (only about 100km from the Tx) early this morning, similar behaviour as at home.
Simone

Funkerberg

13-08-2006, 11:19

Results from Königs Wusterhausen, 20 km south of Berlin.

Rainer

dk8cb

14-08-2006, 01:12

Signal strength fell over the course of my 2-hour logging period and dropouts occured more frequently.

Roland

Funkerberg

14-08-2006, 07:16

Results from Königs Wusterhausen, 20 km south of Berlin.

6 hour Log , 97 % Audio , audio quality is still bad

Rainer

simone

14-08-2006, 21:25

Most dropouts here are caused by the co-channel interferer, IR rather long at night sometimes but not causing problems.
Simone

FritzWue

16-08-2006, 15:15

Daytime report from close to the dutch border.
Should be full time reception in winter without static noise from lightning like we have today.

simone

17-08-2006, 05:04

Again audio problems this morning, low level only one channel :mad:
Simone

FritzWue

17-08-2006, 15:41

Daytime log, most time unattended.
Too much audio level and compression, hissing and ringing in background on voices.
Jingles and voices sound like being mixed for AM broadcasting and not for near FM quality.

FritzWue

17-08-2006, 15:44

At least with this hit one stereo channel is definetively missing!
( only 96kbps for file size reasons )

dk8cb

18-08-2006, 09:44

Not really good through the night with co-channel interference despite my directional antenna. Interestingly, there is also a weak and slowly fading signal right now at full daylight and at a distance of 464 km.

If I were to listen to this station inside the target area, the heavily compressed and distorted audio on voice announcements would definitely make me turn the receiver off instantly! It hurts in the ears!

Roland

simone

19-08-2006, 07:08

Not bad in the last 45min early this morning.
Simone

dk8cb

22-08-2006, 01:20

Observations:

- absolutely no audio on the signal, not even at the highest volume setting
- an always long impulse response, often with longer delayed peaks hardly falling off in amplitude over time; much worse than on the signal from Langenberg
- on-channel interference
- a number of TX interruptions, see screenshot of waterfall diagram for an example
- a much worse result than with the signal from Langenberg at about the same distance.

Roland

simone

22-08-2006, 05:03

Also no audio when I tried to listen in the last half hour this morning :(
Simone

FritzWue

22-08-2006, 07:59

Not good on the loop antenna last night.
There was audio in the beginning, but the rest of the log was unattended, so can't say when the audio stopped.

FritzWue

23-08-2006, 08:08

A short period on the wire antenna.
No fun, modulation failed several times.

simone

23-08-2006, 17:23

Again no audio this morning :(
Simone

dk8cb

25-08-2006, 00:55

Too much interference from an on-channel station.

The announcements and the jingles should better be removed altogether since
- the voices are distorted, most likely because of too much audio compression and
- because they are totally irrelevant.
EVERY listener will know which frequency he has tuned his receiver to, so he doesn't have to be told ("auf Mittelwelle 1575")! Besides, in future DRM receivers, the frequency will be totally irrelevant to the user!

Roland

simone

25-08-2006, 05:21

Quite good in the last 25min this morning, and with audio :)!
Simone

Funkerberg

27-08-2006, 11:56

good results tonight, 6 hours = 99 % audio.

Rainer

FritzWue

30-08-2006, 07:08

Not good on my loop in east-west direction:

Funkerberg

30-08-2006, 08:50

Not bad tonight on Königs Wusterhausen, 20 km south of Berlin.

Rainer

FritzWue

30-08-2006, 15:05

During daytime attenuation at the upper end of the mediumwave band the signal just is not strong enough here for a good result.

dk8cb

31-08-2006, 01:10

In Munich, reception is a bit shaky with short dropouts. Audio quality seems to have impoved, at least the announcer's voice is not as compressed as it used to be. Jingles however are still compressed and sound distorted.

Roland

FritzWue

31-08-2006, 15:21

Without rain and thunderstorm much better today compared to yesterday, but often still too much audio level:

simone

16-09-2006, 07:10

Many dropouts early this morning mostly caused by interference.
Simone

dk8cb

22-09-2006, 00:48

A generally good signal with regard to signal strength also with only little interference but with a problematic impulse response, see screenshots.

Roland

df9rb

30-09-2006, 16:37

Hi all,

very good for daytime reception with the ALA1530.

Bernd, DF9RB

dk8cb

06-10-2006, 09:00

There were a few dropouts during fading periods when co-channel interference became too strong.

Roland

dk8cb

13-10-2006, 23:37

Quite a good signal with regard to signal strength but no audio due to a terrible impulse response.

Roland

simone

14-10-2006, 08:05

Good results in the last half hour this morning.
Simone

FritzWue

16-10-2006, 20:01

Rheine-A30-Minden
Not strong for a 20kW TX.

simone

17-10-2006, 05:14

No audio this morning :(
Simone

simone

18-10-2006, 05:07

... same situation today :(
Simone

FritzWue

18-10-2006, 19:35

31749 Auetal-A2-B441-Seelze near Hannover
Even when there were audioframes there was no audio! :rolleyes:
Strange that they don't notice that. :confused:

EDIT: ... http://www.oldiestarradio.de/ and http://www.oldiestar.de/ are also down tonight!
"Warning: DB function failed with error number 1146"

simone

19-10-2006, 06:28

... still the same today :(
Simone

simone

22-10-2006, 07:13

Good results in the last half hour, don´t know if there was audio.
Simone

Andreas

22-10-2006, 09:26

Normally I have given up to try medium wave reception at my QTH due to unfavourite conditions. However last night I gave 1575 kHz a try, with results as shown. I guess the famous MorphyRichards radio wouldn't bring out a tone under these conditions.

Neither did my PC but for different reason: As was told in a german radio forum the cable for audio feed has been damaged.
Isn't it nice what you can do with an excavator ? :D

simone

28-10-2006, 10:39

Unattended log of the last hour this morning.
Simone

FritzWue

28-10-2006, 15:05

Slow fading and some static noise:

mitajohn

28-10-2006, 23:29

Hi all,

I received this transmission with strong co-channel interference for a couple of minutes.

John.

Andreas

29-10-2006, 05:18

good results at last tonight, best between 23:00 and 3:00. (Everybody in bed then - TV and PC off???).

Digger

29-10-2006, 16:56

Hi,

Just let the log run..... Not much audio.

Terje

simone

05-11-2006, 07:19

Rather good last night.
Simone

carknue

05-11-2006, 10:03

Not so good last night.

FritzWue

14-11-2006, 05:44

Not so good with the wire here:

carknue

15-11-2006, 18:56

Not good last night.

FritzWue

19-11-2006, 06:30

With that TX signal long distance reception is not good.

FritzWue

06-12-2006, 21:29

Oldenburg-A28-Leer
AM carrier right ontop

FritzWue

12-12-2006, 16:07

Nottuln-A43-Muenster Sued
AM ontop, signal low, Radio Vatican on 1611kHz at that time and 1200 km distance is better. :o

Per

23-12-2006, 15:03

Hi,

Not much audio, but a some text msg - such as "OldieStar Radio 1575".
Distance to Tx: 872 km.

simone

23-12-2006, 16:14

Rather good results early this morning.
Simone

simone

19-01-2007, 04:57

No DRM signal this morning when I tried at 03:45 UTC and no signal until the end of the transmission.
Simone

FritzWue

29-01-2007, 20:56

Peine-A2-B2-Potsdam Telegrafenberg
Report split in two parts for battery change at Buckautal.
Good program content for the road.

simone

20-02-2007, 05:08

Great results this morning.
Simone

carknue

24-02-2007, 08:03

Strong signal, but very bad results. IR was too long. I belive that they use a wrong antenna.

simone

24-02-2007, 14:40

It works better in the early morning, perfect results yesterday morning but again without audio :(, here my results from this morning but I did not try to listen.
Simone

carknue

24-02-2007, 14:47

Hi Simone,

when I started the log last night, there was audio.

carknue

25-02-2007, 16:10

Better in the early afternoon.

simone

04-03-2007, 07:12

Some dropouts this morning.
Simone

FritzWue

16-03-2007, 23:55

Essen-B224-A2-Bottrop-A31-Gescher

FritzWue

30-03-2007, 21:42

Buende-A30-Bad Oeynhausen-A2-Hannover-A7-Sarstedt

FritzWue

06-04-2007, 15:07

Not strong enough:

simone

21-04-2007, 06:17

Good results this morning.
Simone

FritzWue

24-04-2007, 06:19

Rehren-Hessisch Oldendorf-Hameln

simone

29-04-2007, 05:48

Good results in the last 45 minutes this morning.
Simone

simone

01-05-2007, 05:29

Only a few dropouts in the last hour this morning.
Simone

simone

05-05-2007, 14:21

Nearly perfect in the last hour this morning.
Simone

Funkerberg

11-05-2007, 10:45

Ohne Kommentar....

carknue

14-05-2007, 08:00

Strong signal, but bad results.

carknue

15-05-2007, 08:45

Much better results last night.

carknue

16-05-2007, 09:05

Stronger signal last night, but worse results.

carknue

17-05-2007, 08:47

Better this night.

carknue

18-05-2007, 10:11

Not so good last night.

f1tay

19-05-2007, 23:50

Signal at Paris with a local station of Paris (Radio Nouveaux Talents) on the frequency.
Reception with a omniderectional antenna.
Daniel

DRM-OM

22-05-2007, 10:19

not very impressive
Radio Berlin International was much better in the old days ...

FritzWue

30-05-2007, 07:05

Duisburg-A3-A2-A31-Borken

FritzWue

30-05-2007, 16:35

Werne-A1-A43-Nottuln

andimik

01-06-2007, 08:47

Good for the first hour.

FritzWue

15-06-2007, 15:27

The signal is too weak at daytime here.

FritzWue

16-06-2007, 15:04

With this signal my wires work better as dipole than in T configuration.

Ant-SWL

17-06-2007, 08:37

Unattended log. Good SNR. Second half with fading.

FritzWue

25-06-2007, 21:33

Leonberg-A8-Pforzheim

FritzWue

03-07-2007, 20:51

Werl-A44-Unna in a queue

FritzWue

06-07-2007, 09:54

Best on the dipole in the morning slowly fading out.

andimik

07-07-2007, 10:21

Tonight's log.

FritzWue

07-07-2007, 15:15

I keep on trying... :D

FritzWue

08-07-2007, 05:58

Terrible impulse response and a lot of interference at nighttime on the horizontal dipole.

FritzWue

08-07-2007, 13:43

I keep on trying... ;)

df9rb

15-07-2007, 08:26

Hi all,

signal > 2mV on the EWE, no interference - but no audio. The reason must be the improper TX antenna producing a terrible Impulse Response.....

Bernd, DF9RB

FritzWue

21-07-2007, 12:25

As usual just a few dB missing.

FritzWue

22-07-2007, 09:59

Good until about 08:30 UTC.

FritzWue

27-07-2007, 06:01

Unattended overnight log
Sometimes very strong with declared 100 kW but that does not help.
(I checked my s-meter calibration)
The noisefloor sometimes was nearly as strong as the local Langenberg DRM signal on 1593 kHz.
Have to test another antenna configuration to get better impulse shape on mediumskywave.

andimik

28-07-2007, 09:38

I don't understand why this should be a 100 kW transmitter, see tonight's log.

FritzWue

03-08-2007, 16:37

Winter conditions at summertime today.

FritzWue

14-08-2007, 06:10

Mostly unattended log, very strong, good result:

Ant-SWL

18-08-2007, 11:03

An unattendend log for 1575 KHz. No better result with a lower Bitrate between 0000 - 0200 UTC.
Antenna was a 25m outdoor longwire in north-south direction.

andimik

19-08-2007, 08:50

Very bad results :mad: :mad: due to Mode D and 10 kHz bandwidth

simone

20-08-2007, 15:56

Good results last night using mode B.
Simone

FritzWue

21-08-2007, 07:09

Most time unattended log.
The higher bitrate seems to work better at nighttime. :confused:

andimik

21-08-2007, 07:50

I guess the problem is 10 kHz (9 kHz and Mode D is not allowed according to specs) bandwidth when using Mode D.

Please keep in mind as the frames are 750 (Mode D) instead of 1500 (Mode B).

FritzWue

21-08-2007, 15:23

@andimik:
I think you are right, cannot check it, was asleep at that time. ;)

Today no problems with mode A/9kHz except that the usual slow daytime fading and local lightning crashes over Enschede/NL reduced the fun a lot.

simone

21-08-2007, 16:30

Lower SNR when mode D was being used (I actually watched it), many dropouts despite low bitrate during that time.
Simone

FritzWue

22-08-2007, 06:29

Unattended log
Looks like many broadcasters don't care about their actually transmitted signal.

andimik

22-08-2007, 07:47

My log looks similar.

simone

22-08-2007, 17:21

Good results but quite low SNR with mode D.
Simone

andimik

23-08-2007, 07:51

Not so good this night.

Log will follow.

f1tay

26-08-2007, 01:50

Reception at Paris.
Daniel

FritzWue

26-08-2007, 15:23

Not so good at 335km distance.
The strange thing is that with my two L-wire-antennas at daytime this station is always much better in dipole configuration than in T-configuration.

andimik

27-08-2007, 21:56

Not so good. Mode D again from 0:00 to 2:00 UTC with bad results.

FritzWue

29-08-2007, 16:36

28.August 2007:
AK Koenigslutter-A2-A14-Ak Schkeuditz (Leipzig)
The signal from TX Burg is not so good to the west on the long distance but really strong on the autobahn in their target area at 160km/h+ nearly all of the time.

FritzWue

29-08-2007, 16:38

29.August 2007 same way back, wider range:
Leipzig Nordost-A14-A2-Hannover Bothfeld
99.99% CDA over 84 minutes at high speed :cool:
...and good audio quality at 24kbps! :cool: :cool:

simone

29-08-2007, 17:13

Some dropouts last night, I guess from 00.00- 02.00 was again mode D with lower bitrate.
Simone

andimik

01-09-2007, 13:57

This night Mode D was more stable than Mode B.

Log shows Frames in Percent, not absolute!

Sound quality is awful. I suggest to force the radio station boss(es) to listen to DRM in Mode D ...

FritzWue

01-09-2007, 16:14

Unattended log without agc.
Don't know what happened in the morning, maybe signal got too strong.:confused:

Ant-SWL

02-09-2007, 14:17

Unattend log.
Very strong Signal here when log starts. The IR was very long and low. This is one reason for last nights result:

FritzWue

03-09-2007, 19:48

High speed, good on the autobahn, problems when entering Leipzig via Torgauer Strasse.

Ant-SWL

23-09-2007, 07:08

Unattended overnight Log.

FritzWue

26-09-2007, 15:50

Gescher-A31-A30-Ibbenbueren
Signal too weak here for high speed and close to high voltage lines plus problems with electrostatic rainshower.

andimik

27-09-2007, 07:57

Bad this night.

FritzWue

30-09-2007, 08:15

Not good here either...terrible impulse response.

simone

30-09-2007, 10:49

Quite good results in the first hour (mode B), despite rather long IR.
Simone

Ant-SWL

03-10-2007, 12:18

Unattended log
Late Log-start 2320 UTC.

simone

05-10-2007, 14:46

Unusual problems in the last two hours early this morning (modeB).
Simone

FritzWue

06-10-2007, 16:01

Daytime log, signal sometimes as strong as WDR Langenberg on 1593 kHz.

drmdab

07-10-2007, 13:52

Not bad today! But not perfect...

FritzWue

19-10-2007, 22:20

Magdeburg-A14-Nossen

simone

23-10-2007, 06:20

Quite good results in the first two hours last night.
Simone

simone

24-10-2007, 16:16

Results from last night.
Simone

simone

25-10-2007, 16:26

Good conditions last night with typical results.
Simone

simone

27-10-2007, 18:01

Not sure what caused the problems in the first hour, maybe co-channel interference.
Simone

simone

01-11-2007, 07:51

Better conditions last night.
Simone

FritzWue

03-11-2007, 12:14

Still the same problem at nighttime.
I wrote an email, but nobody seems to care.

FritzWue

11-11-2007, 12:06

AM carrier on top

simone

11-11-2007, 21:48

Not too bad last night.
Simone

simone

15-11-2007, 15:56

Results from last night.
Simone

Per

16-11-2007, 17:39

Hi,

Despite a strong signal, a clean channel, I was unable to get any audio from OldieStar on this channel. A look at the channel response revealed an ever changing Impulse response.
:confused:
Time: 04:42 - close down @ 04:59 UTC.

FritzWue

19-11-2007, 12:03

Best reception with horizontal dipole configuration to reduce low angle long distance AM interference ontop.

simone

19-11-2007, 16:19

Results from last night, started quite good in the first hour (mode B).
Simone

simone

24-11-2007, 10:25

Results from last night.
Simone

Per

27-11-2007, 05:11

Hi,

This morning I had better luck, SNR of 18 dB and almost 8 minutes of stereo audio until close down @ 05:00 UTC.
VoR WS in analogue on co-channel.

simone

27-11-2007, 06:21

Quite good results in the last two hours (modeB).
Simone

FritzWue

03-12-2007, 14:37

Good in the early afternoon, later AM interference.

simone

07-12-2007, 06:29

Rather good results last night.
Simone

simone

08-12-2007, 11:00

Results from last night.
Simone

simone

18-12-2007, 20:22

Not so good from 0300- 0400 last night.
Simone

simone

21-12-2007, 19:55

Problems from 0100- 0300 (mode D)
Simone

Per

25-12-2007, 14:19

Hi,

Ups and downs on the reception of OldieStar Radio. Time: 13:53-14:15 UTC.
Some received txt msg:
OldieStar Radio 1575 - Digital
Stündlich 10:30 Uhr bis 15:30 Uhr: OldieStar Radio Regionalreport
Aktueller Hinweis zum Programmablauf:
OldieStar Radio - Studio Magdeburg

simone

28-12-2007, 06:28

Quite good at the beginning of my log, problems from 0100- 0300 in mode D.
Simone

FritzWue

23-01-2008, 06:02

Not good on the dipole last night.

simone

28-01-2008, 06:23

Unattended log from last night.
Simone

simone

05-02-2008, 18:11

Results from last night.
Simone

simone

12-02-2008, 07:29

Rather good at the start and the end.
Simone

FritzWue

26-02-2008, 13:16

Not good, had to choose the dipole configuration, as too much on channel AM interference in T-configuration.

FritzWue

02-03-2008, 15:17

Good mediumwave propagation today.
Accidentially I ticked the wrong button, so a report in two parts.

FritzWue

22-03-2008, 15:06

Not much joy today:

simone

01-05-2008, 07:05

Good results in the last hour this morning.
Simone

simone

02-05-2008, 07:51

Good results only for the last hour this morning.
Simone

FritzWue

04-05-2008, 15:05

Signal too weak at daytime here:

simone

05-05-2008, 07:16

Good results this morning with mode B.
Simone

simone

07-05-2008, 07:15

Good results in the last hour.
Simone

simone

10-05-2008, 06:54

Results as usual, more dropouts with mode D.
Simone

Ant-SWL

11-05-2008, 11:41

Result from last night. Here also more dropouts in Mode D.

simone

12-05-2008, 09:41

Perfect results in the last hour this morning.
Simone

simone

13-05-2008, 06:06

Pretty good results in the last two hours this morning.
Simone

simone

14-05-2008, 17:04

Rather good results last night and this morning.
Simone

Ant-SWL

17-05-2008, 08:25

Result from last night. Stable but not perfect in Mode D ( attachment 2 ).

simone

18-05-2008, 07:10

Pretty good results in the last two houirs, some more dropouts before.
Simone

simone

25-05-2008, 07:17

Quite good in the last two hours (mode B), although signal got weaker in the last half hour.

simone

26-05-2008, 05:10

Quite good from 0115, nearly perfect in the last two hours, weak signal in the last half hour.
Simone

maxpower

30-05-2008, 23:45

Signal is very nice, the stongest that I can get from a german DRM Medium-Wave Station, but no audio tonight from oldiestar?

FritzWue

01-06-2008, 15:10

Upper mediumwave bandend on a summer afternoon.

simone

26-06-2008, 16:37

Quite good results in the last two hours this morning after switching to mode B.
Simone

simone

28-06-2008, 16:42

Perfect resultrs for two hours using mode B.
Simone

simone

04-07-2008, 08:35

Some dropouts in mode D, perfect results in mode B.
Simone

simone

06-07-2008, 07:20

Good conditions last night, lots of short dropouts in mode D, perfect decoding in mode B.
Simone

simone

07-07-2008, 16:43