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simone
05-02-2006, 08:20
Hi all,
strong and stable signal again last night, pretty good results for 6 hours, see attachment
Simone

dk8cb
05-02-2006, 23:28
Hi,

quite a good result, very pleasant listening.

Roland

simone
06-02-2006, 16:11
Hi all,
quite good again last night, see attachment
Simone

dk8cb
07-02-2006, 00:52
Quite good but I only listened for a short period.

Roland

simone
07-02-2006, 07:06
Hi all,
absolutely perfect for 6 hours!
Simone

FritzWue
07-02-2006, 23:39
Driving from 56154 Boppard to Essen via A61, A1, A3, A52.
Strong AM interference until near Koblenz when starting still at daylight, BBC 648kHz and Ireland 252kHz were much better on my second radio in the beginning, but after a short time in darkness then DRM 1296kHz was much better than the other two.

FritzWue
08-02-2006, 22:59
Driving from Porta Westphalica near 32423 Minden to 48712 Gescher via A30, A31.
At the end problems with electrostatic rain.

dk8cb
09-02-2006, 00:14
A bad period decreased the percentage of decoded audio but there were also long periods of very good reception.

Roland

FritzWue
10-02-2006, 18:44
Some minor problems with fading and AM interference in the evening.

simone
11-02-2006, 06:29
Hi all,
almost perfect last night
Simone

dk8cb
11-02-2006, 10:48
There were some periods last night when reception could have been better.

Roland

dk8cb
11-02-2006, 23:24
Not so good tonight with periods when signal was weak.

Roland

simone
12-02-2006, 10:20
Hi all,
great results using the DWT with the TG33 antenna last night
Simone

dk8cb
12-02-2006, 23:05
Quite good during the last hour.

Roland

simone
13-02-2006, 07:30
Hi all,
perfect last night!
Attachment also shows some of the decoded RSCI tags.
Simone

simone
14-02-2006, 06:05
Hi all,
just perfect, like the night before.
Simone

simone
15-02-2006, 06:33
Hi all,
good conditions again last night
Simone

carknue
15-02-2006, 23:10
A quite good results for my location this night. Only a few but longer dropouts. SNR graph follows quite well the fieldstrength graph.

dk8cb
15-02-2006, 23:39
Just the last 20 minutes, but perfect.

Roland

simone
16-02-2006, 06:20
Hi all,
perfect results for 6 hours
Simone

dk8cb
17-02-2006, 04:38
Not bad despite my neighbour's interference sources switched on.

Roland

simone
17-02-2006, 06:27
Hi all,
great results last night
Simone

dk8cb
17-02-2006, 23:03
Hi,

very good apart from a certain period with fading.

Roland

simone
18-02-2006, 07:48
Hi all,
perfect results until the end using the Sony SW7600G, strong and stable signal as can be seen in the second attachment also showing signal strength using the DWT/ TG33 antenna.
Simone

dk8cb
18-02-2006, 23:16
A very bad result today due to problems caused by a long impulse response, see attachments.

Roland

simone
19-02-2006, 06:01
Hi all,
good results for mor than 3 hours, then suddenly at 2033 the signal got much weaker (>-10dB) than usual, many dropouts at times of fading when interferers were quite strong.
Simone

simone
19-02-2006, 10:04
... and results improved again this morning.
Simone

FritzWue
19-02-2006, 22:39
Some problems when widening impulse response and AM interference occured simultaneously:

dk8cb
19-02-2006, 23:04
There were a few dropouts but there were also good periods in between.

Roland

FritzWue
20-02-2006, 23:29
Good results, the reduced snr in the morning was locally caused by a defective fluorescent lamp below the antenna under the roof.

dk8cb
20-02-2006, 23:29
Not bad. It seemed that the impulse response was a bit longer than usual but this didn't cause big problems as it did a few days ago.

Roland

carknue
21-02-2006, 20:20
Could someone put the needle back to the record?:D

sveron
21-02-2006, 22:05
Hi,

As I didn't join the programme on time today I first thought it was a new record by Nick Cave, who knows... hehehe

By the way, it's rare to get such log without any audio decoding.
DRM feed parameters switch between '19,96kbps other language' and '21,60kbps english', all in AAC mono, every half second. No country ID and no attached text.

Stephane

dk8cb
22-02-2006, 00:28
Hi,

I think that any encoder error signals which should have been present in such a case as today should also be routed to the distant control room from where perhaps a reset could be initiated in case nobody is at the TX site.

Roland

simone
22-02-2006, 05:37
Hi all,
the problem is still the same at the beginning of the transmission this morning.
Simone

simone
22-02-2006, 08:55
.... and here are my results from last night (unattended), showing the problem started at 19:20.
Simone

dk8cb
22-02-2006, 23:17
I wonder what caused the impairment during the last 50 minutes but the impulse response did not look very good either. I wonder why this deterioration in conditions occurs now as we are already approaching spring.

Roland

simone
23-02-2006, 07:30
Hi all,
nearly perfect results last night, in my location conditions did not get worse in the last hour.
Simone

FritzWue
23-02-2006, 20:18
Driving from near 31542 Bad Nenndorf west of Hannover to 48712 Gescher via A2, A30, A31:

dk8cb
23-02-2006, 23:38
A strong signal which got even stronger towards the end of transmission. Also, quite unlike yesterday, the spectrum had a flat top and the impulse response looked fine.

Roland

simone
24-02-2006, 05:17
Hi all,
very good results again last night
Simone

simone
25-02-2006, 05:24
Hi all,
nearly perfect results last night.
Simone

dk8cb
25-02-2006, 16:53
Hi,

not so good last night.
The large dropout was of my own making, I accidentally damaged the power connection to my receiver and had to resolder it quickly.

Roland

dk8cb
25-02-2006, 23:30
Quite good to listen to despite a few glitches.

Roland

simone
26-02-2006, 05:47
Hi all,
very good results again last night
Simone

simone
26-02-2006, 17:48
Hi all,
also good results this morning, see attachment
Simone

dk8cb
26-02-2006, 23:19
Quite good for long periods and especially during Concert Hour (20h - 21h UTC) when listening was highly enjoyable.

Roland

dk8cb
27-02-2006, 23:16
Hi,

not a good result today. Although signal was strong, there were moments when the impulse response looked rather bad and when there were dropouts. There was interference from an on-channel station but it was weaker than what would cause a dropout under normal conditions.
As there are sometimes doubts being raised about the statements concerning the impulse response, I have attached a file showing spectrum and impulse response during a bad period. When the impulse response gets long, one can always notice that the spectrum looses its flat top and becomes rather rough as can be seen in the attached picture.
The dropouts were not a result of on-channel interference since with this mode and under normal conditions, the centre on-channel carrier may be at least 10 dB stronger without causing dropouts.

Roland

simone
28-02-2006, 06:28
Hi all,
good conditions again last night, nearly perfect results
Simone

simone
01-03-2006, 06:16
Hi all,
great results for 6 hours, see attachment
Simone

dk8cb
01-03-2006, 09:48
Reception was good when I tuned in. Later however, there was a period with a long impulse response and a weaker signal. After this period had been overcome, signal became rather strong again.

Roland

FritzWue
01-03-2006, 20:59
Driving from 48147 Muenster to 48712 Gescher:

dk8cb
01-03-2006, 23:09
A good signal but also periods with deep fading and interference.

Roland

FritzWue
02-03-2006, 23:06
Driving from 48712 Gescher via Cologne to near Koblenz on the A31, A2, A3, A1, A61. The big dropout was at a stop under the roof of a fuel station.

FritzWue
02-03-2006, 23:09
Driving home from 66953 Pirmasens to 48712 Gescher via Kaiserslautern, Koblenz, Cologne. Sometimes problems with an AM carrier ontop of the signal.

dk8cb
02-03-2006, 23:15
Not bad.

Roland

simone
04-03-2006, 07:48
Hi all,
great results using the DWT/ LA 380 last night
Simone

dk8cb
04-03-2006, 10:00
A great result last night.

Roland

df9rb
04-03-2006, 10:18
Hi all,

nearly 100% with the EWE-antenna this morning.

Bernd, DF9RB

dk8cb
04-03-2006, 23:13
Not bad with a strong signal and long periods of good reception.

Roland

simone
05-03-2006, 09:41
Hi all,
strong and stable signal last night, see comparison of the results from the Sony radio and the DWT/ LA380 (incl. signal strength) attached
Also very good results in the first 2.5 hours this morning before the signal got weaker.
Simone

dk8cb
05-03-2006, 23:30
Although the overall percentage of decoded audio was less than 99%, the result was rather good since the dropouts were mainly restricted to relatively short periods.

Roland

FritzWue
06-03-2006, 19:22
Driving from near Hannover to 48712 Gescher via A2, A30, A31:

dk8cb
06-03-2006, 23:20
A bit of fading and strong interference during those moments.

Roland

simone
07-03-2006, 11:52
Hi all,
still one of the best and most reliable transmissions! Nearly perfect results last night starting at local sunset.
Simone

dk8cb
07-03-2006, 23:03
Quite bad tonight.

Roland

dk8cb
09-03-2006, 10:28
I have seen better days, signal faded often and there was strong local interference from my neighbour's lighting systems.

Roland

FritzWue
09-03-2006, 20:00
Driving from near 49661 Cloppenburg to 48712 Gescher via A1, A30, A31:

dk8cb
11-03-2006, 13:25
Not good with a lot of local interference.

Roland

dk8cb
11-03-2006, 13:28
During fading periods, local interference from my neighbour's lighting systems caused dropouts.

Roland

simone
11-03-2006, 13:31
Hi all,
strong and stable signal from 1815 last night, attachment shows comparison of the results from the Sony and the DWT/LA380 (incl. signal strength)
Simone

dk8cb
13-03-2006, 10:19
Initally, reception was quite good but later it began to suffer from fading and a prolonged impulse response.

Roland

dk8cb
13-03-2006, 23:45
Local interference and fading caused a few dropouts.

Roland

FritzWue
14-03-2006, 19:17
Just a few minutes driving through Muenster:

dk8cb
15-03-2006, 11:30
A good signal for most of the time but there were moments with fading when the on-channel stations, which were quite strong, caused dropouts.

Roland

FritzWue
16-03-2006, 19:26
Driving from 48712 Gescher to 48147 Muenster North:

dk8cb
16-03-2006, 23:49
Just the last 20 minutes of today's transmission.

Roland

simone
17-03-2006, 08:37
Hi all,
great results last night as usual, also perfect results for 3.5 hours this morning
Simone

dk8cb
19-03-2006, 14:38
A high level of local noise together with fading caused an unsatisfactory result.

Roland

simone
19-03-2006, 19:27
Hi all,
great results this morning until 2.5 hours after local sunrise, then signal became weaker
Simone

dk8cb
19-03-2006, 23:37
I have seen much better results than this one.

Roland

simone
20-03-2006, 16:28
Hi all,
some dropouts last night
Simone

FritzWue
20-03-2006, 18:58
Driving from near Borken to near Duesseldorf via A31, A2, A3.
Some problems with high voltage powerlines.

FritzWue
20-03-2006, 19:02
Driving from near 65550 Limburg/ Lahn to 48712 Gescher via A3, A2, A31:

simone
22-03-2006, 17:52
Hi all,
nearly perfect from 1830 last night
Simone

dk8cb
22-03-2006, 21:58
An unusually strong signal last night but unfortunately there also were a few moments with fading.

Roland

dk8cb
22-03-2006, 23:52
Signal fluctuated a lot and dropouts were common.

Roland

simone
23-03-2006, 15:55
Hi all,
a few minor dropouts at times of deep fading last night
Simone

FritzWue
23-03-2006, 19:14
Driving from near 48683 Ahaus to 49661 Cloppenburg via A31, A30, A1.
In Cloppenburg it was too noisy at last.

simone
25-03-2006, 08:36
Hi all,
strong and stable signal last night, also perfect results this morning until 0745.
Simone

dk8cb
25-03-2006, 10:33
A strong signal last night with a few periods of fading but good reception in between.

Roland

dk8cb
26-03-2006, 17:48
I have seen days with better reception.

Roland

dk8cb
27-03-2006, 00:08
There were good and bad periods on this transmission today.

Roland

simone
27-03-2006, 17:08
Hi all,
good results for the first 2.5 hours yesterday morning and also quite good results from 1815 last night, donīt know what caused the problem in the evening.
Simone

dk8cb
29-03-2006, 00:40
A rather bad result today despite a lack of local interference. There were many incidents of fading when the spectrum looked very bumpy and when the impulse response appeared to be rather long. Seems conditions were just a little unfavourable.

In between the bad periods, the spectrum looked perfect.

Roland

simone
29-03-2006, 17:30
Hi all,
good results after local sunset.
Simone

dk8cb
30-03-2006, 06:44
Very good for a change.

Roland

simone
30-03-2006, 07:27
Hi all,
perfect from 1720
Simone

FritzWue
30-03-2006, 14:32
Driving in the rain from Porta Westphalica to Burgwedel via A2, A37, A7:

dk8cb
30-03-2006, 22:56
Signal faded out too often this morning during daylight hours.

Roland

dk8cb
31-03-2006, 00:14
Signal strength increased considerably towards the end of transmission.

Roland

dk8cb
01-04-2006, 12:16
Not a good result last night. Don't know why since a large part of it was recorded unattended.

Roland

simone
01-04-2006, 13:05
Hi all,
seems it is not worth tuning in before 1730 anymore, also some dropouts in the last hour last night.
Perfect results until 0745 this morning.
Simone

simone
02-04-2006, 10:18
Hi all,
great results last night and for 3 hours this morning, using the DWT/ LA380 indoors, attachment incl. signal strength
Simone

dk8cb
02-04-2006, 12:42
There were long periods with good reception and a rather strong signal. Unfortunately, there were a few dropouts as well.

Roland

simone
03-04-2006, 06:41
Hi all,
perfect results from 1800 last night
Simone

dk8cb
03-04-2006, 09:30
A strong signal but also strong co-channel interference during fading.

Roland

simone
03-04-2006, 19:22
Hi all,
BBC WS only using a temporary programme feed tonight, no AFs, no EPG... :(
also bad audio quality, with low audio bandwidth, no SBR
Simone

dk8cb
04-04-2006, 00:31
Hi,

the low audio bandwidth could have been taken as an opportunity to lower the bitrate and make the signal more robust.

There was too much fading and strong on-channel interference despite a strong signal during periods of good reception.

Roland

DRM-OM
04-04-2006, 08:49
late start in the morning / not quite useful for working people :(
not best quality either.
evening results also not really good

1296 was much better in the good old days of the german service ...

FritzWue
04-04-2006, 19:08
Tried to listen in the morning, but noticed high bitrate with bad audio/ low bandwidth. So tuned in RTL 1440kHz which sounded much better then.
In the afternoon the audio was better though certainly not the optimum at 21.6 kbps.
Driving from 48499 Salzbergen to 48712 Gescher on the A31 with the usual minor problems caused by high voltage lines close to the autobahn.

DRM-OM
05-04-2006, 05:10
or DXers, but not for the "broad masses",
see attachment of last night.

FritzWue
05-04-2006, 06:30
or DXers, but not for the "broad masses",
see attachment of last night.

Hi Bernhard,

you are far out of the target area of that transmission, so you are a DXer then indeed. :)
Listening to this frequency even in the car is no problem in the Netherlands and close to the border here.
Using a directional loop antenna with minimum to Spain should improve reception at your location.

simone
05-04-2006, 07:43
Hi all,
Iīm also outside the main target area, it is really amazing how reliable skywave reception can be, nearly perfect decoding again from 1730 last night using the Sony/ferrite antenna indoors, btw it was again the normal configuration with good audio quality and the data services.
@ Bernhard: A 15m wire is certainly not the right antenna for MW reception.

Simone

dk8cb
05-04-2006, 09:25
A strong signal but also interference from various on-channel stations (not just Valencia) despite the loop.

Roland

dk8cb
06-04-2006, 00:38
A few unpleasant dropouts but otherwise good.

Roland

simone
06-04-2006, 06:29
Hi all,
perfect results last night once skywave propagation had started.
Simone

dk8cb
07-04-2006, 00:06
Excellent reception, only very few minor dropouts and a strong signal but unfortunately, I forgot to click on the logging button. :(

Roland

DRM-OM
07-04-2006, 00:22
you are far out of the target area of that transmission, so you are a DXer then indeed.
I'm just comparing with my reception of AM on 1296 when the German Service was on the air 10 years and more back, part of this time I lived even 200km further SOUTH from here. No problems then.
@ Bernhard: A 15m wire is certainly not the right antenna for MW reception.
My active antenna 16m above ground at the other location is not working any better. And both are "big" or "expensive" antennas compared to what I expect "ordinary listeners" or the above mentioned "broad masses" are willing to install.
Don't expect them to use something like a loop. No directional antennas in cars either (that's my main area of interest).
But I find your results with a built in ferrite antenna interesting.

simone
07-04-2006, 07:12
Hi all,
good conditions again last night, see attachment.


No directional antennas in cars either (that's my main area of interest).
But I find your results with a built in ferrite antenna interesting. Mobile reception of this transmission is no problem in the main target area but stops about 100km from here. There are many other transmissions that work well on mobile reception, but we are still waiting for DRM capable car radios!
Simone

DRM-OM
07-04-2006, 08:55
well on mobile reception, but we are still waiting for DRM capable car radios!
... and the industrie is still waiting for automotive qualified chipsets ...

dk8cb
07-04-2006, 09:39
... and the industrie is still waiting for automotive qualified chipsets ...

If the industry were really interested, they would either put more pressure on the chip makers or design their own chipsets and have them made in a chip foundry.

I also believe, we would already have a variety of chipsets if there were a US and a Japan/Korea market for DRM capable receivers.

Roland

DRM-OM
07-04-2006, 10:12
We see the Radioscape RS500 module on the market, but this is useful for cheap portable radios only (presented at IFA 2005).
Other solutions are in the pipeline, but not ready for mass production now.

design their own chipsets and have them made in a chip foundry.

You must take into account that there are shareholders so nobody will pay for an own development of a chip in a typical producer of electronic equipment/hardware. This is even worse in US I believe. The only reason why HD radio took off the ground is that this itself is a profit making company, but this has also been delayed further and further in the past.

dk8cb
07-04-2006, 10:26
We see the Radioscape RS500 module on the market, but this is useful for cheap portable radios only (presented at IFA 2005).
Other solutions are in the pipeline, but not ready for mass production now.

Yes I know, I have reported on this forum (http://www.drmrx.org/forum/showthread.php?t=1167) about the module and the receivers based on it after IFA 2005.
But the main chips contained in the module are not restricted to be used in the RS500 module only, they can as well be used in other receivers. I suppose, TI will be happy to sell the baseband processor to anyone.

Roland

FritzWue
07-04-2006, 20:19
Driving from 48712 Gescher to near Neuwied on the A31, A2, A3.
Dropouts when standing with trucks in queues.

FritzWue
07-04-2006, 20:22
Driving home via the A3 from junction A48 near Koblenz, A2, A31.
Dropouts in Friday queues near Cologne, no full statistics as notebook switched off with empty battery.

dk8cb
08-04-2006, 00:12
Signal was pretty strong but unfortunately, it also had periods of fading when it was affected by on-channel and local interference.

Roland

simone
08-04-2006, 21:24
Hi all,
good conditions last night, see comparison of DWT/LA380 and SW7600G/ ferrite antenna attached (signal strength recorded from LA380)
Simone

simone
09-04-2006, 08:17
Hi all,
great results last night and perfect for 2 hours this morning
Simone

dk8cb
09-04-2006, 13:06
Only 98% of correctly decoded audio but still quite good since there were long periods with no dropouts. Signal was strong.

Roland

dk8cb
09-04-2006, 20:23
Hi,

signal is strong and the spectrum looks perfect however SNR is only around 16 dB and no audio can be decoded.
It looks like the modulator has to be reset.

Roland

simone
09-04-2006, 20:27
Hi Roland,
same situation here, 16.9 dB SNR, no decoding :(
Simone

DRM-OM
09-04-2006, 21:34
but I'll give up this.
I can confirm the above findings: even with MSC o. k. no audio

dk8cb
09-04-2006, 21:53
Report attached.

Roland

dk8cb
11-04-2006, 00:15
Signal faded a lot and caused a lot of dropouts. No local interference, just bad conditions.

Roland

simone
11-04-2006, 06:39
:)
Hi all,
after some problems the night before, absolutely perfect results last night with a strong and stable signal, great!
Simone

dk8cb
11-04-2006, 23:25
Orfordness went off the air precisely an hour too early.
What's going on? Was it only a matter of erroneous programming or has a new schedule come into force today? If the latter were to be true, I would regret it a lot.

Roland

simone
12-04-2006, 06:42
Hi all,
great that the schedule has been corrected, already a signal at 0400 this morning :), ( btw AFs information needs to be updated)
good results with a few minor dropouts last night.
Simone

dk8cb
12-04-2006, 09:19
great that the schedule has been corrected, already a signal at 0400 this morning :)

Not so great :( (if it's really a new schedule) with no signal after midnight local time when I regularly like to listen.

Roland

simone
14-04-2006, 12:35
Hi all,
perfect results for 3.5 hours this morning.
Simone

dk8cb
14-04-2006, 14:05
Very good for a while, then reception deteriorated.

roland

dk8cb
14-04-2006, 23:16
Rather bad today.

Roland

simone
15-04-2006, 19:24
Hi all,
bad results last night for 2 hours when the signal was much weaker than usual, better results again early this morning.
Simone

simone
16-04-2006, 10:12
Hi all,
much better than the night before, but not as strong and stable as usual.
Simone

dk8cb
16-04-2006, 23:06
Reception during the last hour when the great radio play "Attitude" from the "World Drama" series was broadcast, was rather good and I enjoyed listening a lot.

Local interference sources were off, otherwise I wouldn't have got this result.

Roland

simone
17-04-2006, 09:34
Hi all,
good results last night, also this morning good conditions lasting until 2.5 hours after sunrise, see attachments
Simone

simone
17-04-2006, 19:16
Unfortunately again low SNR (<17 dB), no MSC decoding tonight :(
Simone

dk8cb
17-04-2006, 21:23
SNR here is less than 15 dB. No audio at all.
I wonder what's going on.

Roland

Andreas
17-04-2006, 21:34
Signal looks normal, so I have no idea what is wrong either :confused:

FritzWue
18-04-2006, 19:23
There were problems this morning when I tried to listen at 07:00 UTC, rf signal looked ok, but audio was intermittendly interrupted. So I changed to RTL. In the afternoon on my way back no interruptions any more, but somehow there still seemed to be problems with decoding the signal. There were more dropouts than I expected, fieldstrength was ok.
Driving from 42657 Solingen to 48712 Gescher via A3, A2, A31:

dk8cb
18-04-2006, 23:10
A mixed result. No local interference but fading.

Roland

simone
20-04-2006, 06:26
Hi all,
perfect results after sunset.
Simone

dk8cb
20-04-2006, 23:17
Although the signal was strong at times, there were fading periods with strong interference and dropouts.

Roland

simone
21-04-2006, 15:18
Hi all,
close to perfect last night, also good conditions but some prgramme feed problems at the start this morning (temporary feed, no audio)
Simone

dk8cb
22-04-2006, 08:52
Signal was much more stable last night than it usually is. Reception was rather good as a result.

Roland

simone
22-04-2006, 10:20
Hi all,
back with the regular datastream last night, quite good results also this morning, interestingly SNR improved after sunrise
Simone

dk8cb
22-04-2006, 23:35
After my neighbour had come home and had switched his low-voltage ligthing system on at about 21 h UTC, fading resulted in dropouts more easily and the SNR was lower during those moments than it was before.

Roland

simone
23-04-2006, 10:30
Hi all,
perfect results after sunset, see comparison of Sony/ferrite antenna and DWT/LA380, incl.signal strength in the attachment
Also good results early this morning.
Simone

dk8cb
23-04-2006, 23:05
Not perfect but still good listening though.

Roland

FritzWue
24-04-2006, 20:01
Driving from 49661 Cloppenburg to 48712 Gescher via A1, A30, A31.
First big dropout under the roof of a fuel station, second close to a field with wind generators.

dk8cb
24-04-2006, 23:48
Not so good tonight. Signal often faded and the local interference level was also high with my neighbour having all his low-voltage lights switched on.

Roland

FritzWue
25-04-2006, 20:35
Driving from Aachen to 48712 Gescher via A4,A44,A61,A46,A57,A42,A3,A2,A31.
Only 97% cda, signalshape looked good most of the time, but was very susceptible to powerlines, bridges etc.
SNR jumped between under 20 and (over) 30dB all the time, perhaps there was too much electrostatic discharge in the air.

dk8cb
26-04-2006, 00:04
Only a short-period report tonight. Reception was quite good with a strong signal, there was also no local interference.

Roland

simone
26-04-2006, 06:34
Hi all,
strong signal, perfect results after sunset.
Simone

FritzWue
26-04-2006, 19:09
Driving from 49661 Cloppenburg to 48712 Gescher via A1, A30, A31.

dk8cb
26-04-2006, 23:02
Fading and local as well as on-channel interference caused a few dropouts.

Roland

FritzWue
27-04-2006, 19:23
Driving from 48712 Gescher to the southwestend of Duesseldorf via A31, A2, A3, A46.
D-layer attenuation, high voltage lines, bridges, railways, tunnels -> dropouts

dk8cb
28-04-2006, 00:36
Just a short report. Signal was strong but the impulse response was rather long and seemed to cause the partially low SNR and the dropouts.

Roland

FritzWue
28-04-2006, 17:17
Driving from 32051 Herford to 48712 Gescher via A30, A31.
We would need a stronger signal to compensate the daytime attenuation on mediumwave in summertime.

dk8cb
29-04-2006, 09:47
Not so good last night with a lot of on-channel interference.
Repositioning the loop at about 20:23 UTC brought some improvement as can be seen in the log, but still, the overall result was quite bad. No local interference though.

Roland

simone
30-04-2006, 08:04
Hi all,
signal strength slowly improved after sunset, see comparison SW76600/ ferrite antenna- DWT/LA380 (incl. signal strength)
Also, with the early sunrise still about 2 hours with rather good results in the morning
Simone

dk8cb
30-04-2006, 23:16
Reception improved a lot after local interference sources had beeen switched off, the signal however also became more stable itself.

Roland

dk8cb
01-05-2006, 23:12
Quite a few number of dropouts when signal faded. No local interference tonight.

Roland

FritzWue
02-05-2006, 20:40
Driving from 57339 Erndtebrueck northeast of Siegen to 48712 Gescher via A45, A2, A31.
No reception in Siegen, we need more fieldstrength.

dk8cb
02-05-2006, 23:09
Only 99% properly decoded but still quite good. Signal became stronger, also the number of fading incidents decreased over the course of my logging period.
Shortly after I had tuned in, I noticed two short signal breaks around 20:30 UTC.

Roland

simone
03-05-2006, 15:08
Hi all,
donīt know what caused the deep dip in the graph, strong and stable signal last night
Simone

dk8cb
04-05-2006, 01:02
Just the last 10 minutes, but perfect.

Roland

simone
04-05-2006, 06:24
Hi all,
great results after sunset
Simone

FritzWue
04-05-2006, 22:09
Driving from 32423 Minden to 48712 Gescher.
In the beginning problems with noise in Minden and no signal in the Weserauentunnel, then stable reception for over 30 minutes when parking followed by no reception in noisy Bad Oeynhausen. From 14:10 onwards improving reception on the A30 and later A31.

dk8cb
04-05-2006, 23:41
Tonight, there were long good periods but also moments with fading and strong co-channel signals.

Roland

dk8cb
06-05-2006, 10:46
A few dropouts but very good in between.

Roland

simone
07-05-2006, 09:28
Seems since yesterday there is a "SNR cycling" problem at the Tx, typically the low SNR lasts for about 10min, then it is OK again for the next half hour. During these 10min I get nearly no audio decoding, see example from this morning attached.
Simone

edit: still the same this evening (Sunday)

dk8cb
07-05-2006, 12:33
I also witnessed an SNR problem but since I was testing a newly modified old receiver, I thought that it was my own fault because when switching back to my ATS-803, I got audio again. Perhaps the TX had just recovered then.

Roland

dk8cb
07-05-2006, 23:49
Like yesterday, there was again a period with low SNR and almost no decoded audio frames.
Reception was already quite bad prior to this event, perhaps this was also caused by a TX problem.

Roland

simone
09-05-2006, 06:08
Hi all,
some droputs last night due to the new configuration. I still wonder about this configuration, seems strange to me. Also bad audio quality, not using SBR at the current bitrate, and no extra data transmitted (text messages, AFS) :confused:
Simone

dk8cb
09-05-2006, 09:40
One of the worst results ever. I switched between receivers because I couldn't believe it was so bad and I first blamed my newly modified receiver.
The log includes the changeovers but reception was so bad anyway that one doesn't even see the moment when receivers were swapped.

No SBR and low audio bandwidth but although quite noticeable, it didn't sound so bad actually.

Roland

dk8cb
10-05-2006, 00:42
Back to normal.

However, I noticed very short interruptions in the transmitted signal, even one in the last few seconds, so not everything seems to work properly.

Roland

simone
10-05-2006, 06:17
Hi all,
strong signal in the first our this morning, occasional short interruptions have always been there (also noticed one at 0444 UTC)
Simone

FritzWue
10-05-2006, 12:55
Just a comparison of the pulse shapes on mediumwave in the parking car at around 10:50 UTC with a 1.4m vertical ontop at my home location.

FritzWue
11-05-2006, 20:06
Driving from 58739 Wickede to 48712 Gescher via A445, A44, A1, A43, B525.
Too many dropouts for enjoyable listening.

dk8cb
13-05-2006, 10:11
Not good with local interference from my neighbour's lighting systems as well.

Roland

simone
13-05-2006, 16:26
Hi all,
some problems around sunset yesterday, then perfect from 1920.

This morning a strong signal again, high SNR using the FRG100 and adjusting the levels manually, see second attachment.

Simone

dk8cb
13-05-2006, 23:21
Not so bad today. No local interference.

Roland

simone
14-05-2006, 07:18
Hi all,
conditions were quite good from 1930 last night, but there were some datastream problems, when using the "temporary feed" (according to the text messages), settings were strange and not even audio available :(
But no problems this morning, with the early sunrise (about 15min before the start of the transmission) still two hours of excellent reception and high SNR.
Simone

dk8cb
14-05-2006, 23:03
Rather good today.

Roland

dk8cb
16-05-2006, 10:53
A few dropouts due to fading.

Roland

dk8cb
16-05-2006, 23:13
A constant string of noise pulses from distant thunderstorms caused a somewhat shaky result tonight.

Roland

simone
17-05-2006, 16:05
Hi all,
not bad despite heavy thunderstorms in our area, only causing minor dropouts.
Simone

carknue
17-05-2006, 22:42
Still no good results for me here. Signal is not stable here.

dk8cb
17-05-2006, 23:08
Not so bad today, at least close to 99% audio.

Roland

FritzWue
18-05-2006, 17:07
Driving from 48712 Gescher to 32051 Herford.
Bad reception in the middle between Ibbenbueren and Osnabrueck where they have a lot of noisy high voltage lines that are even worse when it's raining.

dk8cb
19-05-2006, 00:42
Not so good tonight.

Roland

simone
20-05-2006, 07:17
Strong an stable signal, perfect results after sunset last night.
Also great results in the first hour this morning.
Simone

dk8cb
20-05-2006, 12:33
Quite good last night.

Roland

simone
21-05-2006, 06:52
Strong signal and good results after sunset, similar results using the DWT/ LA380 and the Sony SW7600G/ ferrite rod, see comparison (incl. signal strength recorded from DWT) attached
Only one hour with a strong signal and good SNR early this morning.
@ Julian: BTW, I noticed that meanwhile the EPG files are already updated at the start of the transmission in the morning, great :) !
Simone

dk8cb
21-05-2006, 10:33
The later, the better.

Roland

dk8cb
22-05-2006, 01:21
A rather bad result tonight.

Roland

dk8cb
22-05-2006, 23:16
I have seen better days.

Roland

FritzWue
23-05-2006, 06:11
Driving from 48712 Gescher to 49844 Bawinkel via A31, B213.
Detour through town of Lingen, no reception there.

simone
23-05-2006, 16:23
Quite good again last night, some problems just before sunset.
Simone

dk8cb
23-05-2006, 23:05
Not so bad for a change, however with TX interruptions, see report.

Roland

simone
25-05-2006, 06:23
Good conditions from 1930 last night
Simone

dk8cb
25-05-2006, 20:21
Not so bad during the later part.

Roland

dk8cb
26-05-2006, 10:09
Not so bad last night.

Roland

simone
27-05-2006, 10:03
Pretty good last night with both , the Sony/ ferrite antenna and DWT/ LA380.
Simone

dk8cb
27-05-2006, 10:39
Better than usual last night.

Roland

dk8cb
28-05-2006, 00:40
Strong interference with fading at the beginning, quite good later.

Roland

simone
28-05-2006, 10:14
Pretty good results with the Sony/ ferrite antenna even before sunset, some dropouts during fading with the DWT/ LA380.
Also good results during the first 75min this morning.
Simone

dk8cb
28-05-2006, 23:05
Rather good tonight for a change.

Roland

dk8cb
30-05-2006, 00:13
Apart from occasional fading, signal was very steady today.

Roland

simone
30-05-2006, 07:26
Good results again last night.
Simone

FritzWue
30-05-2006, 07:42
Very good this morning:

dk8cb
31-05-2006, 11:27
I logged only the last 20 minutes last night.

Roland

FritzWue
31-05-2006, 13:34
Driving from Wickede via Unna, Muenster to Gescher.
You can see every high voltage line.

dk8cb
01-06-2006, 09:49
Just a 50 minute report. Signal was rather strong.

Roland

dk8cb
01-06-2006, 23:09
Just a short report with a bad result despite a very strong signal. The impulse response looked rather long at times during dropouts. There were almost no visible interference carriers however.

Roland

simone
03-06-2006, 07:32
Stronger signal after sunset, perfect results then, see comparison DWT/ LA 380 and SW7600G/ ferrite antenna attached.
With the early sunrise only one hour with good reception in the morning now.
Simone

simone
05-06-2006, 07:00
Only 40min with good results this morning,
good results last night after sunset.
Simone

simone
06-06-2006, 06:16
Good results from 1900, when signal got stronger
perfect results in the last 2 hours using the SW7600G
Simone

simone
06-06-2006, 06:17
Strong signal for more than one hour this morning
Simone

FritzWue
06-06-2006, 21:03
Driving from near Rheine to Osnabrueck on the A30:

FritzWue
06-06-2006, 21:15
Driving from near Bremen to 48712 Gescher.

simone
09-06-2006, 06:31
A weak signal at the beginning, quite good results after sunset.
Simone

dk8cb
10-06-2006, 10:14
Some fading.

Roland

simone
10-06-2006, 11:03
Perfect from 2015.
Simone

simone
11-06-2006, 10:16
Perfect in the last 2 hours, except that text messages were not working.
Simone

dk8cb
13-06-2006, 01:51
A few dropouts during fading, otherwise signal was rather strong.

Roland

dk8cb
14-06-2006, 00:32
Not so good tonight.

Roland

FritzWue
14-06-2006, 17:39
Driving from Ibbenbueren to 48712 Gescher via A30, A31.
98% CDA with some lightning crashes and noisy athmosphere:

simone
15-06-2006, 07:14
A few minor dropouts after sunset, maybe due to distant thunderstorms.
Simone

dk8cb
15-06-2006, 23:02
Quite good today.

Roland

dk8cb
16-06-2006, 23:19
Signal was strong and stable but there was interference from local thunderstorms, which were in part visible when looking outside.

Roland

simone
18-06-2006, 15:13
Perfect results at daytime just using the whip antenna (which is not really a MF antenna)
Simone

FritzWue
18-06-2006, 22:13
An evening on the wire antenna:

dk8cb
18-06-2006, 23:16
Again problems with interference from a thunderstorm. Signal was also weak at times and my neighbour's low voltage lighting switchmode supplies were also on.
Not so bad after interference had ceased.

Roland

simone
19-06-2006, 17:42
A weak signal at the start and also distant thunderstorms, quite good from 2010.
Simone

FritzWue
19-06-2006, 21:48
Driving north on the A1 from near Bramsche to noisy Cloppenburg:

simone
20-06-2006, 06:20
Good results after sunset, again distant thunderstorms causing a few minor dropouts.
Simone

dk8cb
20-06-2006, 10:44
Thunderstorms passed over locally and there were other distant ones as well. Signal also suffered from fading at the beginning of my logging period.

Not a good result. A bit better later, when thunderstorm interference had weakened a little.

Roland

FritzWue
20-06-2006, 17:39
Driving from 48712 Gescher to 49661 Cloppenburg via A31, A30, A1: