BBC WS, Kvitsoy on 9470 kHz [Archive] - Page 2

dk8cb

05-01-2006, 16:42

When I switched on today, the configuration was just changed from 20.42 kbps to 17.38 kbps. Was a backup stream used from then on?

There was at least one TX break at 11:25 UTC. There was also a bit of interference from what may have been a data transmission around 9465 kHz. Later, a signal, supposedly from TWR Guam transmitting in Japanese (verified by listening to their lower sideband on 9465 kHz) could be seen as well but unlike on a few other days, it was too weak to cause dropouts.

Roland

simone

05-01-2006, 17:09

Originally posted by dk8cb
When I switched on today, the configuration was just changed from 20.42 kbps to 17.38 kbps. Was a backup stream used from then on?
Roland
Hi Roland,
it looked like the backup datastream was used from Norway, there were also breaks or an undecodable signal for some time from Rampisham in the afternoon.
After the normal datastream was back, no more problems with the dataservices (text messages, EPG) like in the past days :)
Simone

dk8cb

06-01-2006, 14:59

Hi,

signal was not strong and there were severe interference problems after 14:00 UTC from a station broadcasting in russian on 9465 and another one in chinese (?) on 9475 kHz.

Roland

FritzWue

06-01-2006, 17:05

Perfect results driving from Dortmund to Duisburg via A42:

dk8cb

07-01-2006, 15:57

Hi,

as always, there was some interference from above and below during the last hour of my logging period.

Roland

simone

07-01-2006, 16:37

Hi all,
perfect results as always, see attachment
Simone

dk8cb

08-01-2006, 22:35

Quite a bit of interference from AM stations again.

Roland

dk8cb

09-01-2006, 23:16

There was some interference from other stations. First it was CRI on 9460 kHz with its wide bandwidth transmission. Later, especially after 12:00 UTC, another station on 9465 kHz, the identity of which I didn't check, caused dropouts. Since Kvitsoy's signal was not really strong, local noise pulses also caused very short audio dropouts.

Roland

simone

10-01-2006, 16:32

Hi all,
perfect results again today, see attachment
Simone

dk8cb

10-01-2006, 23:03

Good reception today but a little interference from CRI's wideband transmission on 9460 kHz before they closed down at 10:00 UTC.
Kvitsoy's signal was stronger and fluctuated less than it did over the past few days.

Roland

sveron

11-01-2006, 21:04

Hi,

Very good and stable frequency today : 100% audio. Results obtained with laptop running with batteries only.

73, de Stephane

dk8cb

11-01-2006, 23:12

There was again a small problem with CRI's wideband signal before 10:00 UTC today.

Roland

dk8cb

12-01-2006, 21:40

No idea what caused the short dropout since reception was excellent otherwise.

Roland

dk8cb

13-01-2006, 09:28

To illustrate the effect which CRI's wideband +/-10 kHz transmission on 9460 kHz does have on the DRM signal, here is a screenshot taken today.

Roland

dk8cb

13-01-2006, 18:57

Hi,

and here is my report which also shows the influence the interference had on DRM reception.

The large dropout at 11:04 UTC looked like being caused by a TX problem.

Roland

dk8cb

14-01-2006, 15:25

Hi,

during the last half hour, there was a bit of interference, mainly from the usual stations at the upper and lower edge of the DRM spectrum.

Roland

simone

14-01-2006, 17:59

Hi all,
perfect results as usual, see attachment
Simone

dk8cb

15-01-2006, 15:19

quite good with just a little interference.

Roland

Bob

15-01-2006, 23:01

Hi,
Very good reception except for a big drop-out from approx 13:17- 13:27.
regards
Bob

dk8cb

17-01-2006, 00:34

Some interference, especially before 10:00 UTC.

Roland

dk8cb

17-01-2006, 23:17

Again interference from CRI's transmission.

Roland

dk8cb

18-01-2006, 22:09

Good reception apart from technical problems. At 12:14 UTC, I noticed a moment with invalid MSC which was followed by two very short breaks in transmission immediately after, see screenshot.
Perhaps the other dropouts in my log were of the same nature.

Roland

dk8cb

19-01-2006, 22:47

Hi,

a strong signal today, much stronger than anything I have seen on this frequency this year so far. But CRI's signal was also strong, so there was again interference before 10:00 UTC.

Unfortunately, there were also technical problems which started at 11:44 UTC. I noticed a lot of short interruptions which were followed by a complete loss of signal. It came back, went again and after it had finally returned, there were again short breaks and an invalid stream for a while.

See also Simone's report on the 7320 kHz transmission from Rampisham.

Roland

mitajohn

20-01-2006, 14:46

Hi all,

I receive this TX from an area actualy in the fringe of its coverage. The signal today was rather weak but pretty stable. I used Sony for this reception report and run a 60mins log from where I noticed: a low SNR and not a good decoding. The TX sounded much better than it seemed in the log. I stopped logging and run another log with Sony, but this time with a simple tunable LC network inserted between the antenna and the RX. I had an improved average SNR, about something 5 dBs, and a nearly perfect decoding. Take a look at the "zip".

John.

dk8cb

20-01-2006, 21:47

Hi,

a strong signal with quite good reception with the exception of a few dropouts caused by CRI's wideband signal.

Roland

dk8cb

21-01-2006, 11:21

Originally posted by dk8cb
... quite good reception with the exception of a few dropouts caused by CRI's wideband signal.

I just checked the B05 schedule at www.hfcc.org. The interfering station transmitting CRI's programme on 9460 kHz is even registered there, albeit not with +/- 10 kHz bandwidth. The transmitter site is Cerrik, Albania, using 150 kW with CIRAF zone 28E being the target area.
I think a formal complaint should be launched.

Roland

dk8cb

21-01-2006, 14:30

Rather good again today.

Roland

dk8cb

22-01-2006, 15:05

Excellent.

Roland

simone

22-01-2006, 17:43

Hi all,
I think that´s one of the best transmissions for my area, strong signal, no problems with interferers, absolutely perfect results again for 5 hours today, see attachment
Simone

dk8cb

23-01-2006, 23:30

Quite a good result today.
The minor dropouts were caused by local noise pulses.

Roland

dk8cb

24-01-2006, 23:40

There was the usual interference from CRI's broadband signal on 9460 kHz before 10:00 UTC and later, there were also a few very short instances with fading, when another AM signal could be seen on 9465 kHz.

Very good otherwise.

Roland

dk8cb

26-01-2006, 21:16

As usual, a bit of interference from CRI until 10:00 UTC.

Roland

dk8cb

27-01-2006, 19:30

Hi,

there was again the usual interference before 10:00 UTC.
Signal was not strong and there were also a few other dropouts for which I could not see any cause. Those at the end of my logging period seemed to be caused by interference.

Roland

carknue

28-01-2006, 13:51

Perfect 46 minutes this morning.

dk8cb

28-01-2006, 16:07

The usual interference before 10:00 UTC. Later, a bit of interference from a station on 9465 kHz during moments of fading.

Roland

sveron

28-01-2006, 23:10

Hello to all,

Perfect listening this morning ('Top of the Pops' hour). First 12 minutes with a non-regular SNR and then a drop-out : the reason was a "Furnace" air heater which was running on 2 stairs down in the house. The drop-out happened when this heater was put off. Then SNR became a bit higher and more stable.
Log made on laptop running on batteries only.

73, de Stephane

dk8cb

29-01-2006, 18:21

Quite good.

Roland

dk8cb

30-01-2006, 22:32

Signal was a bit weak today and there were a few short dropouts for which I could not see any reason, perhaps the TX also had its share.

Roland

dk8cb

31-01-2006, 23:12

Quite good today.

Roland

dk8cb

01-02-2006, 22:00

Today, there was a period with TX problems when the DRM signal was lost and when only a carrier was transmitted for a while, see screenshot.

Good reception otherwise but of course the usual slight problems from CRI before 10:00 UTC.

Roland

dk8cb

02-02-2006, 23:38

Rather good except during the usual interference period.

Roland

dk8cb

03-02-2006, 21:00

Very good apart from interference problems caused by CRI's wideband transmission on 9460 kHz before 10:00 UTC.

Roland

carknue

04-02-2006, 12:03

No problems with interferences.

dk8cb

04-02-2006, 12:20

Originally posted by carknue
No problems with interference.

Of course, you are located too much to the north for that. The +/- 10 kHz wide broadband CRI transmission on 9460 kHz originates from Cerrik in Albania, target area is Romania. With Munich obviously being located at the edge of the beam, I do get a strong signal and interference every day.
I guess that further to the east, it will be even worse but there seem to be no DRM receivers there to report about it.

Roland

dk8cb

04-02-2006, 15:07

Quite good today.

Roland

simone

04-02-2006, 15:38

Hi all,
perfect results again today
Simone

sveron

04-02-2006, 23:47

Hello to all,

100% audio during today's Top Of The Pops hour. I enjoyed listening on wireless headphones while preparing lunch... DRM can do such thing better than AM :-)

73, de Stephane

simone

05-02-2006, 16:28

Hi all,
once again perfect results
Simone

dk8cb

05-02-2006, 19:03

Again very good today.

Roland

dk8cb

07-02-2006, 00:54

A bit of fading today and perhaps a too low RF input level setting.

Roland

dk8cb

08-02-2006, 00:14

Very good apart from a dropout caused by CRI.

Roland

dk8cb

09-02-2006, 00:12

Kvitsoy's signal was not strong today, but CRI came in rather strong and caused a few short dropouts before 10:00 UTC. The other dropouts seemed to be caused by local noise spikes.

Roland

dk8cb

09-02-2006, 23:30

Good reception apart from dropouts again caused by CRI's wideband transmission on 9460 kHz.

Roland

dk8cb

10-02-2006, 19:42

There were several problems today: interference from CRI before 10:00 UTC
two short breaks in transmission
a long break in transmission, after which the bitrate was reduced to 17.38 kbps
a dropout when bitrate was returned to its normal value.
Was the satellite antenna covered with snow and had it to be subjected to a cleaning procedure, during which the backup stream had to be used? Looking outside the window here and seeing the huge amounts of snow, I wouldn't wonder.

Roland

dk8cb

11-02-2006, 15:13

Not bad today, a bit of interference after 14:00 UTC but then, it's not my kind of programme anyway...

Roland

simone

11-02-2006, 18:55

Hi all,
quite good as usual
Simone

dk8cb

12-02-2006, 14:39

Very good.

Roland

dk8cb

14-02-2006, 01:31

The usual interference from CRI before 10:00 UTC, otherwise a good result.

Roland

dk8cb

14-02-2006, 23:37

Quite good today but I also didn't listen before 10:00 UTC. :)

Roland

dk8cb

15-02-2006, 22:48

Rather good if one doesn't look at the times before 10:00 UTC when CRI caused dropouts.

When is this interference going to end?

Roland

dk8cb

16-02-2006, 20:48

Hi,

bitrate was reduced today and there were no data services. Seems, the backup stream was used.

There was the usual interference before 10:00 UTC.

Roland

mitajohn

17-02-2006, 14:42

Hi all,

Not a good one result apart from the lower BR.

John.

simone

18-02-2006, 18:11

Hi all,
perfect but low SNR using the WR G313i
Simone

dk8cb

18-02-2006, 18:51

Hi,

interference from 9460 kHz before 10:00 UTC as usual and later from a signal on 9465 kHz.

Roland

simone

19-02-2006, 14:37

Hi all,
perfect results using the Sony Sw7600G/ built-in telescopic antenna today
Simone

dk8cb

19-02-2006, 16:00

Rather good.

Roland

dk8cb

20-02-2006, 23:31

I have no idea what caused the dropout.

Roland

dk8cb

22-02-2006, 08:40

Perfect after CRI had ended its transmission.

Roland

dk8cb

22-02-2006, 22:51

Same situation as yesterday.

Roland

dk8cb

23-02-2006, 23:35

The usual problems before 10:00 UTC and a few very short dropouts caused by switching pulses of unknown origin.

Roland

dk8cb

24-02-2006, 20:33

Interference from CRI's wideband signal is getting rather boring, I hope something is done against it!

Roland

carknue

25-02-2006, 11:17

Perfect this morning.

simone

25-02-2006, 16:14

Hi all,
perfect again today
Simone

dk8cb

25-02-2006, 16:49

Hi,

the few dropouts were the result of local noise pulses of unknown origin.

Roland

dk8cb

26-02-2006, 17:47

Hi,

good reception today. I suffered from a segmentation fault when I wanted to check Dream's electronic programme guide, so here is the report in two parts.

Roland

carknue

27-02-2006, 19:57

Because this log was logged by DRM Logger, I cannot say what happened in the 2nd part today. If not TX related, it could be a powersaving issue of my Notebook.

simone

27-02-2006, 21:34

Hi Carsten,
it was not a problem with your notebook ;), I got the same dropouts (interestingly at different times than those on the transmission from Rampisham)
Simone

dk8cb

27-02-2006, 21:44

Hi,

here is a list of problems which plagued this transmission and its reception today:

Signal was weaker than usual at my location.
interference from CRI's transmission before 10:00 UTC was strong as a result.
there was a period with a very weak signal around 11 UTC.
signal went off the air with interruptions later. When it came back, the lower bitrate of the backup stream was used and decoding was ok but no audio could be heard as long as the lower bitrate was used.
Later, there seemed to be another TX problem.

Roland

mitajohn

28-02-2006, 14:46

Hi all,

Only for less than 30mins the result was acceptable, the rest was bad.

John.

carknue

28-02-2006, 19:18

14 dB higher fieldstrength today and a perfect result until 14:00 UTC. It looks like interfences from an AM station then.

simone

28-02-2006, 19:57

Hi all,
good results from Kvitsoy today, logfile also contains the first 2 hours on 5875 kHz, no dropouts from 1400 as in Carstens report
Simone

dk8cb

28-02-2006, 19:57

... and a perfect result until 14:00 UTC. It looks like interfence from an AM station then.

Yes, it's interference from an AM station on 9465 kHz which starts its daily transmission at 14:00 UTC. On some days, the signal is too weak to cause dropouts.

A very good result in Munich today, Cerrik on 9460 kHz (until 10:00 UTC) with its high bandwidth was a bit weaker than on other days and did not cause too many dropouts.

Roland

carknue

01-03-2006, 19:43

Results of today.

dk8cb

01-03-2006, 22:43

There was a period with a high noise level today. No idea where it came from.

Roland

carknue

02-03-2006, 19:16

Same results like yesterday. Perfect until 14 UTC.

dk8cb

02-03-2006, 23:19

Very strong interference until 10:00 UTC from CRI's 9460 kHz wideband transmission again today. Interestingly, this type of interference which affects the lower 50% of all DRM carriers, does not cause any deterioration in SNR. MER however is strongly affected.

Roland

carknue

03-03-2006, 16:59

Good results today, but 3 TX problems.

dk8cb

03-03-2006, 21:21

There were a few short dropouts perhaps for local reasons and one major dropout which was caused by a loss of signal followed by a carrier.
The dropouts prior to 10:00 UTC were caused by the usual interference from CRI's transmission on 7460 kHz.

Roland

dk8cb

04-03-2006, 16:00

A weaker period around midday today and a few dropouts from local noise pulses.

Roland

mitajohn

05-03-2006, 15:07

Hi all,

A rather good result until 1359 when strong interference started and finished the reception.

John.

dk8cb

05-03-2006, 16:07

Signal was a bit weaker than usual and there was a bit of interference for some time.

Roland

simone

05-03-2006, 17:39

Hi all,
excellent results again today, no problems with interferers in my location.
Simone

dk8cb

06-03-2006, 23:22

Strong interference from CRI on 9460 kHz and its wideband transmission until 10:00 UTC. Kvitsoy's signal was also a bit weak today.

Roland

mitajohn

07-03-2006, 14:55

Hi all,

A rather good result for about 30mins, then interference started and finished the reception/decoding.

John.

sveron

07-03-2006, 21:13

Hello to all,

I noticed today the introduction of a new multimedia stream to the BBCWS broadcasts from Norway : a 0,54kbps-transmitted website. The only page transmitted contains the gale warnings and weather forecasts from the 3 british CoastGuard 'Navtex' stations, for their respective areas.

Good idea, DRM could also be used by the maritime stations to transmit navigational warnings, the weekly notices to mariners, or weather maps. But I wonder how effective DRM would be, compared to RTTY/Sitor or RadioFax.

73, de Stephane

dk8cb

07-03-2006, 23:06

Rather good with the exception of a TX break shortly before the end of my logging period. There was also another break just after I had stopped logging.

Roland

dk8cb

09-03-2006, 10:36

Signal was not strong and interference from CRI's transmission on 9460 kHz was very strong causing a very bad result until 10:00 UTC.
I have attached a spectrum + waterfall screeenshot showing the start of Kvitsoy's DRM transmission (which started with a carrier for a few seconds) which clearly demonstrates the large bandwidth signal of CRI's transmission from Cerrik, Albania on 9460 kHz.

Roland

dk8cb

09-03-2006, 22:43

Signal was still a bit weak today.

Roland

dk8cb

10-03-2006, 20:36

Signal was strong initially and was thus affected less by interference from 9460 kHz but lost strength later.

Roland

sveron

11-03-2006, 11:21

Hello to all,

No log today for my weekly listening to Top of the Pops at 1000 UTC on this usually very reliable 9470 kHz. Local electrical noise causes severe interference on LW (AM), MW (AM), 75, 49, 41 and 31m (DRM only, AM still good with background noise), with also strong carriers beyond these bands (15440 and 21820 also out of reach this morning). Only RMC on 6175 goes through.

The cause : my neighbours are at some domestic work since the early morning.

73, de Stephane

dk8cb

11-03-2006, 18:49

Very good apart from the usual problems before 10:00 UTC.
Signal wasn't strong however.

Roland

dk8cb

12-03-2006, 14:36

A single dropout, reason unknown.

Roland

Digger

13-03-2006, 14:51

Hi,

Nearly perfect reception.

Terje

dk8cb

13-03-2006, 23:43

As always, there was interference from CRI on 9460 kHz.

Roland

dk8cb

14-03-2006, 20:55

The plot speaks for itself. It's Cerrik again.

Roland

Digger

15-03-2006, 10:07

Hi,

I also believe it is AM splatter from 10 kHz below. Is that what you mean, Roland? Otherwise the reception would be 100%

Terje

dk8cb

15-03-2006, 10:40

I also believe it is AM splatter from 10 kHz below. Is that what you mean, Roland?

Hi Terje,

it is not a matter of believing, that it originates from a transmission on 9460 kHz, it is an established fact. Look at these previously posted plots (http://www.drmrx.org/forum/attachment.php?attachmentid=19034) showing the start of Kvitsoy's transmission. There is CRI with it's +/-10 kHz wide spectrum extending into the lower half of the DRM carriers. And it's not splatter, it's the deliberate use of 10 kHz audio bandwidth as you can hear when you use a receiver that uses an IF bandwidth large enough. The transmission originates from Cerrik, Albania and carries CRI's programme. All CRI programmes broadcast from Cerrik use +/- 10 kHz (eg on 7130 kHz). It is also worth noting that transmissions originating directly from China (eg on 17650 kHz, presumably from one of the new Kashi transmitters), normally use +/-8 kHz.
This is all very bad.

Roland

dk8cb

16-03-2006, 00:04

Just the last minutes of Cerrik's interference and a few local noise pulses.

Roland

dk8cb

16-03-2006, 23:18

As always, there was interference from Cerrik on 9460 kHz until 10 o'clock but there were also TX dropouts at 09:38 UTC and at 12:06 UTC.

Roland

simone

17-03-2006, 15:10

Hi all,
perfect as always, no interference from CRI in my location
Simone

dk8cb

17-03-2006, 16:44

... perfect as always, no interference from CRI in my location

I think, you should also mention, that there is - as you once told me - a hill or mountain south of your location, screening off interference signals from southerly directions (being also responsible for the often perfect results on 1296 kHz and the not so good ones on 1530 kHz).
Can you receive Cerrik on 9460 kHz and how strong is the carrier signal when compared to 9470 kHz? Over here, Cerrik's carrier is often stronger than the DRM signal which would not be a problem if the AM sidebands were limited to +/-5 kHz which they aren't.

Roland

simone

17-03-2006, 17:15

Hi Roland,
I also did reports in other locations (see March 5th in this thread) and also on mobile reception at higher elevations and did not have a problem with interference. But it´s true, we have some hills/ mountains to the East here.
Simone

dk8cb

18-03-2006, 09:43

The usual interference until 10:00 UTC and a perhaps homemade dropout later.

Roland

dk8cb

18-03-2006, 16:16

Rather bad reception until 10:00 UTC due to a strong signal from Cerrik. I have added a screenshot showing the spectrum and the influence of Cerrik's high bandwidth transmission on the lower half of Kvitsoy's OFDM carriers.

Roland

sveron

18-03-2006, 21:06

Hello to all,

Not so good as earlier in the season. Though there's a good SNR, there is more and more fading and weakness in the signal. Thanks to the DE31 antenna I can receive a bit better.

73, de Stephane

mitajohn

19-03-2006, 14:32

Hi all,

Not good at the begining of the log, then turned to much better until the end of transmission. See the png.

John.

dk8cb

19-03-2006, 23:39

Just a short report.

Roland

dk8cb

21-03-2006, 00:13

Quite good after 10:00 UTC.

Roland

dk8cb

21-03-2006, 22:45

Reception after 10:00 UTC was quite good. Not so before, when I took the attached waterfall screenshot with the receiver tuned 10 kHz lower to the interference signal to show its large bandwidth. On this waterfall plot, Kvitsoy's DRM signal can be seen on the right. The +/-10 kHz wide AM signal from Cerrik extends well into the DRM spectrum and causes a lot of trouble.

Roland

carknue

22-03-2006, 19:42

Perfect today, but the SNR seems to be TX limited.

dk8cb

23-03-2006, 23:51

The usual result and a not so strong signal today.

Roland

dk8cb

24-03-2006, 20:09

The usual interference until 10:00 UTC.
Lately, Kvitsoy's signal is often a lot weaker around midday than it used to be a few weeks ago.

Roland

sveron

25-03-2006, 12:53

Hello to all,

If I believe the new BBC WS schedule, this was my last log for 'Top Of The Pops'. Not any 'goodbye' in today's programme, so ??? Anyway, 9470 is becoming worse and worse with the spring season, Roland is right... 9470 here is much sensitive to fading, and above all, dropouts still occur. But Benelux is the real target of this broadcast.

A little off-topic now, but, anyway, DRM is a thing, but the programme itself is important too. If the BBC WS is becoming a more news-oriented channel as ever, and repeating itself all the time, then it won't be worth listening to it for long. For almost 10 years now I've been listening to shortwave, the BBC WS has always been, for me, a good place for learning english with entertainment, not only music (the 'top twenty' was only 30 minutes long, not a long time ago), but also litterature, a long 'play of the week', discovery topics... A few interesting programmes will stay, also shortered, but... By the way, wasn't DRM also designed to allow the broadcast of slow-streamed speech newscasts in parrallel to the main programme, for the people who tune in and want to get news as soon as possible ? In the case the BBC wants to improve its news coverage, it would have been fair to think of the DRM possibilities instead of this programmes cut. It is one thing to develop DRM networks, it's another one if the audience reaction is : "oh, not another all-news channel !"... DRM, if only used as a marketing tool, is driving straight onto the wall...

I'll listen more again to DW and I'm waiting for extended broadcasts from VOR and, hopefully within the next years, CRI and others.

73, de Stephane

dk8cb

25-03-2006, 16:08

There was a period around midday when the signal was a bit weak, the dropouts which occured then were caused by local switching pulses.

Roland

simone

26-03-2006, 18:23

Hi all,
a very weak signal in the first hour, perfect results later. Seems the time for the frequency change is a bit too early in the day at this time of year (at least for my area)
Simone

dk8cb

26-03-2006, 19:25

Signal was a bit weak when I tuned in and local noise easily caused short dropouts.

Roland

dk8cb

27-03-2006, 22:26

With the new A06 season, there seems to be no more wideband transmission from Cerrik on 9460 kHz at 09:00 UTC. As a result, reception was quite good. I have no idea what caused the short dropout later.

Roland

simone

28-03-2006, 18:29

Hi all,
again a very weak signal in the first hour, seems the frequency change is a bit early for my location.
Simone

dk8cb

29-03-2006, 00:28

Rather good today.

Roland

simone

29-03-2006, 17:25

Hi all,
no decoding in the first 40min after perfect results on 7475 kHz in the previous hour
Simone

dk8cb

29-03-2006, 23:05

Very good reception.

Roland

dk8cb

31-03-2006, 00:12

A good signal at the beginning but, as can often be observed over here, a weaker period around midday.

Roland

dk8cb

31-03-2006, 19:53

A weaker signal around midday when there were also broadband noise pulses at almost regular intervals that sounded like a thunderstorm when I checked on another receiver on mediumwave. There were some dark clouds but I didn't see any flashes or hear thunder, so the noise pulses may as well have been man-made and of local origin.

Roland

simone

01-04-2006, 15:47

Hi all,
strong and stable signal, perfect results
Simone

dk8cb

01-04-2006, 16:03

Not so strong over here. There was a weak period around 13 h UTC, when I once thought, the signal might disappear altogether.

Roland

dk8cb

02-04-2006, 22:24

Quite good but not 100% perfect.

Roland

simone

03-04-2006, 20:21

Hi all,
some problems in the first hour as usual., later perfect results.
Simone

dk8cb

04-04-2006, 00:33

Signal was a bit weak at times but reception was still quite good..

Roland

Digger

04-04-2006, 09:08

Hi,

The first hour in Switzerland: A bit weak signal, but thank goodness the 9,460 switched off just after 0700 UTC - splatter and saturated modulation would have been a disaster!

Terje

hsseppo

04-04-2006, 14:43

Hi all,

BBC WS from Kvitsoy was quite good, 97% CDA,

73 Seppo

dk8cb

04-04-2006, 21:47

A rather good result despite a not so strong signal.

Roland

dk8cb

06-04-2006, 00:36

Very good reception.

Roland

Digger

06-04-2006, 13:02

Hi,

Quite stable and almost perfect.

Terje

simone

06-04-2006, 19:51

Hi all,
a weak start in the first 5 min, perfect later.
Simone

dk8cb

07-04-2006, 00:09

Quite good but with a weak signal around 09:45 UTC which was responsible for a few short dropouts.

Roland

dk8cb

07-04-2006, 21:30

There were at least three TX breaks today. There was also a period when Kvitsoy's signal turned a bit weak. I also probably had the RF gain turned down a bit too much during the weak signal period since the signal had initially been quite strong.

Roland

dk8cb

08-04-2006, 11:32

When I tuned in at 09:00 UTC this morning, there was no signal from Kvitsoy.
Now, at 10:30 UTC, there is still no signal.

Roland

dk8cb

09-04-2006, 14:52

Signal wasn't strong today and a local noise pulse caused a dropout.

Roland

simone

09-04-2006, 19:48

Hi all,
a weak start as usual, later good results, bws without the Navtex weather information :(
Simone

dk8cb

10-04-2006, 22:34

There were TX breaks around 10:45 today, otherwise reception was quite good.
I noticed a weak AM signal which sounded like KOL Israel just prior to the start of Kvitsoy's transmission.

Roland

hsseppo

11-04-2006, 12:54

Hi,

quite good again, 96% CDA.

Seppo

hsseppo

11-04-2006, 14:34

Hi,

92 minutes more. At 11:56 - 13:28 99%CDA,

Seppo

dk8cb

11-04-2006, 22:26

Signal strength decreased a lot over the course of my logging period such that I thought it might fade out completely. Fortunately, it didn't and the overall result was still quite good at 99.9%. A few local switching noise pulses caused minute dropouts.

Roland

simone

12-04-2006, 20:39

Hi all,
good results except the weak signal in the first half hour.
Simone

dk8cb

13-04-2006, 00:54

Today here was a period when signal was weak. I noticed some interference then but this was probably a result of intermodulation generated by the receiver itself since I had increased RF gain a bit too much. Signal recovered somewhat later.

Roland

hsseppo

13-04-2006, 15:20

Hi,

In Helsinki Kvitsoy 9470 kHz was 96% CDA during 96 minutes,

Seppo

dk8cb

13-04-2006, 18:41

A better signal than yesterday.

100%.

Roland

dk8cb

14-04-2006, 14:33

Today, there was a period when the signal almost faded out and when it would have been better to continue reception on 7320 kHz (which came in strong). Later however, Kvitsoy's signal recovered, see screenshot.
This looks pretty much like an ionospheric disturbance.

Roland

simone

14-04-2006, 18:09

Hi all,
besides the 40min period with a very weak signal starting at 1110, good results for the rest of the time
Simone

dk8cb

17-04-2006, 16:04

Signal was again a bit weak at times.

Roland

simone

17-04-2006, 19:33

Hi all,
perfect results this morning
Simone

dk8cb

18-04-2006, 18:23

Initially, signal was not strong and there were a few local noise pulses which caused very short dropouts.
I also noticed a few strange incidents when the signal strength seemed to instantaneously jump between two different levels, something which doesn't look like a propagation effect since it happened at such a speed. See screenshot for a waterfall display during one of these events.

Roland

simone

19-04-2006, 17:55

Hin all,
good results besides some datastreamproblems (sometimes using the backup encoding)
Simone

dk8cb

19-04-2006, 23:10

There was a break in transmission and Kvitsoy's signal later became a bit weak but recovered again.

Roland

dk8cb

20-04-2006, 23:06

I can repeat yesterdays text, however the break in transmission (at 08:18 UTC) didn't last as long as it did yesterday.

Roland

simone

21-04-2006, 15:04

Hi all,
strog signal, great results in the car today, half of the time was mobile reception
Simone

dk8cb

21-04-2006, 19:44

Reception was quite good, however there were strange effects shortly before the end of my logging period. I thought I saw the signal jump again in strength for a moment as if an amplifier was switched on and off for a second or so.

Roland

dk8cb

22-04-2006, 22:15

Really good this morning.

Roland

dk8cb

23-04-2006, 14:37

Signal was weaker than usual today.

Roland

simone

23-04-2006, 20:07

Hi all,
strong signal, perfect results in the car today, sync loss at 1322 probably Tx related
Simone

dk8cb

24-04-2006, 23:46

Signal became rather weak over the course of my logging period and dropouts occured more often than usual.

Roland

simone

25-04-2006, 16:02

Hi all,
signal was weaker today, but still good results
Simone

dk8cb

25-04-2006, 22:28

Signal was rather weak today and there was a period when I thought it would disappear completely. Audio dropped out but signal strength soon recovered and audio came back.

Roland

dk8cb

26-04-2006, 22:31

There were TX problems with two interruptions and carrier at around 07:45 UTC. Later, signal had again a weak period but it was still a bit stronger than it was yesterday. A few short dropouts though.

Roland

dk8cb

28-04-2006, 00:33

Reception was rather good and signal was stronger than on the previous days.
The two dropouts coincided with a sudden appearance of broadband noise, most likely of local origin, perhaps from an electrical device used by the plumbers who were doing some work at my location today.

Roland

dk8cb

28-04-2006, 20:49

Perfect for three hours today. :)

Roland

dk8cb

29-04-2006, 21:38

Signal was not strong today and local noise pulses from light switches etc.easily caused very short dropouts. Very good otherwise.

Roland

dk8cb

01-05-2006, 00:10

Signal was a bit weak today.

Roland

dk8cb

01-05-2006, 15:02

Kvitsoy's signal was unusually weak at around noon local time today, which resulted in quite a few dropouts. Later, signal became stronger again.

Roland

dk8cb

02-05-2006, 21:49

Signal was rather weak again, this seems to become a more and more regular statement for this frequency.

Roland

dk8cb

04-05-2006, 00:08

Signal strength was much better than yesterday but still not like what I have seen in winter.

Roland

simone

04-05-2006, 16:45

Hi all,
not as strong and stable as during the first hour on 7475 kHz
Simone

FritzWue

04-05-2006, 22:01

Driving from near 48429 Rheine to 32423 Minden via A30.
Started logging early with signal coming up. The big dropout at 08:00 was when driving on the southside of the Wiehengebirge mountains and through the Weserauentunnel.

dk8cb

04-05-2006, 23:44

Signal strength was low at times which resulted in a few short dropouts, still not a bad result though.

Roland

simone

05-05-2006, 15:38

Hi all,
strong signal and good results on mobile reception this afternoon, not sure what caused the only dropout
Simone

dk8cb

05-05-2006, 20:59

Not a strong signal but still quite ok.

Roland

dk8cb

06-05-2006, 14:56

Not bad but signal could have been stronger.

Roland

dk8cb

07-05-2006, 14:34

Quite good on the newly modified receiver.

Roland

dk8cb

08-05-2006, 22:14

Rather good, the tiny dropouts were all a result of local noise pulses.

Roland

dk8cb

09-05-2006, 22:56

Today, Kvitsoy changed bitrate and services several times which resulted in short interruptions and dropouts.
The bitrate shown in the log was not used throughout.

Roland

dk8cb

10-05-2006, 23:35

When I started logging, signal strength was a lot higher than for most of the remaining time of my logging period when Kvitsoy's signal went down a lot in strength.
Results were nevertheless rather good, the only limitation being an occasional locally generated noise pulse.

Roland

dk8cb

12-05-2006, 00:57

I missed 0.03% of audio when signal was a bit weak.

Roland

simone

12-05-2006, 15:24

Hi all,
good results in the car today, mobile reception during the first 2 hours
Simone

dk8cb

12-05-2006, 22:04

Not bad but with a double TX break and a weaker signal around midday. Even switching my soldering iron off caused a tiny dropout.

Roland

dk8cb

13-05-2006, 17:35

If signal strength were a bit higher or when receivers wouldn't be that sensitive against pulse noise, not every local noise pulse would cause a tiny dropout. Otherwise, reception was quite good.

Roland

simone

14-05-2006, 19:24

...not only signal strength, SNR is also lower, but good decoding anyway
Simone

dk8cb

15-05-2006, 20:57

Apart from a TX break, reception was very good.

Is it my subjective impression or has the BBC recently made some changes to the way, the audio is processed? If so, it did not have a positive effect.

Roland

dk8cb

16-05-2006, 22:02

Quite good today. I seem to have switched on logging too early, so I didn't get bitrate and station label logged.

Roland

simone

17-05-2006, 16:02

Hi all,
pretty good results this morning
Simone

dk8cb

17-05-2006, 23:16

I tuned in earlier today than I usually do. Signal strength in the morning was much better than what I am used to from around midday. Signal strength was also equal to what I saw from Kvitsoy on 7475 immediately before.

Roland

dk8cb

19-05-2006, 00:40

Signal was very strong today. There were however tiny dropouts which were caused by a thunderstorm passing through. Flashes could be seen and thunder could be heard.

Roland

dk8cb

19-05-2006, 20:50

Very good reception today, however a few short noise pulses caused tiny dropouts.

Roland

carknue

20-05-2006, 14:05

A few dB stronger than 7475 an hour before. Perfect reception.

dk8cb

20-05-2006, 14:35

Very good.

Roland

simone

21-05-2006, 18:49

Great results again today.
Simone

dk8cb

21-05-2006, 20:07

Very good.

Roland

dk8cb

22-05-2006, 21:11

The transmitter took long breaks today.

Roland

dk8cb

24-05-2006, 22:30

Rather good today. No idea what caused the single dropout.

Roland

dk8cb

25-05-2006, 20:29

I just got a few minutes today since the signal disappeared shortly after I had tuned in. Went to 7320 kHz for a better service.

I hope it was not my receiver that was responsible.

Roland

simone

25-05-2006, 21:10

Quite good before the break, also later after signal was back again, except two short Tx related dropouts. Low bitrate etc. like the past 2 days.
Simone

dk8cb

26-05-2006, 19:30

There were several TX breaks today and only the lower bitrate stream with just one service was transmitted.
Reception was good however.

Roland

dk8cb

28-05-2006, 00:35

Perfect but still running at reduced bitrate and with only a single service.

Roland

dk8cb

28-05-2006, 14:43

Still at low bitrate but also perfect.

Roland

simone

28-05-2006, 15:57

Perfect results again today.
Simone

dk8cb

30-05-2006, 00:16

Excellent over many hours.

Bitrate was still low and there was only a single service.

Roland

dk8cb

30-05-2006, 22:57

Quite good again. Still with low bitrate and only a single service.

Roland

dk8cb

01-06-2006, 23:11

Quite good today.

Roland

dk8cb

03-06-2006, 00:26

Very good.

Roland

Digger

03-06-2006, 10:07

Hi all,

Perfect here in the afternoon as well.

Terje

dk8cb

03-06-2006, 18:12

Not so good today. First, signal was weak and second, there was something that caused SNR to drop, however I couldn't figure out the cause. Initially I thought, it had something to do with all the people being at home and causing a lot of electrical noise by switching things on and off but now when I look at the report, it seems to me that another station had started at 10:00 UTC and had caused interference.
The short dropouts were very annoying and made me change to 7320 kHz.

Roland