5875 kHz BBC WS from Rampisham [Archive] - DRM Software Radio Forums

Baldo34

30-08-2005, 08:20

Hi all,
BBC World Service now on 5875 kHz // 9470 kHz. Rampisham?
James, is this only a test or a regular transmission?
73, Klaus

Baldo34

30-08-2005, 12:29

The new hours on this frequency are:
0700-0830 UT and 1800-1900 UT.
73, Klaus

simone

30-08-2005, 19:17

Hi all,
a few minor dropouts, no audible dropouts when listening with the DRMSWR
73, Simone

simone

31-08-2005, 15:33

Hi all,
strong and stable signal this morning, see attachment
73, Simone

Andreas

31-08-2005, 19:04

Evening broadcast could have been nice, if not.............

73, Andreas

simone

31-08-2005, 19:30

Hi all,
quite good results, except the Tx problem as before on 7320 kHz, see attachment
73, Simone

simone

01-09-2005, 14:50

Hi all,
good conditions again, once the "exploding spectrum" problem occured
73, Simone

mitajohn

01-09-2005, 19:07

Hi all,

A good result tonight.

John

simone

01-09-2005, 19:14

Hi all,
perfect results this evening using the DWT, see attachment
73, Simone

df8uo

02-09-2005, 20:14

First 40 min perfect, then some problems.
73, Daniel

simone

03-09-2005, 19:36

Hi all,
interferences in the last half hour today, see attachment
73, Simone

simone

05-09-2005, 15:31

Hi all,
good results this morning, two maybe Tx related dropouts?
73, Simone

mitajohn

05-09-2005, 19:02

Hi all,

A good result for 40 mins this evening.

John

simone

06-09-2005, 15:20

Hi all,
not as good as usual, see attachment
73, Simone

simone

06-09-2005, 20:07

Hi all,
good results this evening after a delayed start of transmission, unfortunately the wrong datastream had been selected at Rampisham :(
73, Simone

FritzWue

06-09-2005, 20:28

Good signal, but a little boring two tone programme and funny text. :D

simone

07-09-2005, 15:14

Hi all,
good results with both modes today, mode A until 0740, then the normal configuration was used, see attachemnt
73, Simone

simone

07-09-2005, 20:38

Hi all,
still bad conditions at the start of this transmission (as at the end of 7320 kHZ), improving again soon, see attachment
73, Simone

simone

08-09-2005, 08:33

Hi all,
datastream problems until 0730, good results then, btw without the MM service, see attachment
73, Simone

Per

10-09-2005, 08:27

Hi,

Very good reception at the start of my listening time, 07:30 UTC. Then at 08:15 the signal started to become weaker, just to be lost at 08:22 UTC.

df8uo

10-09-2005, 19:06

Hi all,
quite good in the beginning. Starting 18h20 signal dropped.
73, Daniel

df8uo

12-09-2005, 19:14

Today almost perfect
73, Daniel

Digger

13-09-2005, 09:02

Hi all,

Here is a short report until QRT just before 0830 UTC. Quite good reception despite a queer looking channel impulse response.

73
Terje

simone

15-09-2005, 16:10

Hi all,
bad conditions this morning, see attachment
73, Simone

Digger

15-09-2005, 18:08

Hi all,

Looks like the M8 distubance affected most SW bands....

Terje

simone

15-09-2005, 20:28

Hi all,
conditions improved a lot, perfect results on the evening transmission
73, Simone

simone

16-09-2005, 17:37

Hi all,
perfect results this morning, see attachment
73, Simone

simone

17-09-2005, 09:17

Hi all,
good results using the DWT, see attachment
73, Simone

simone

17-09-2005, 19:38

Hi all,
an even stronger signal at the beginning this evening than in the morning, don´t know what caused the problems in the second half
73, Simone

carknue

18-09-2005, 08:33

Good results this morning. Signal was strong in the begining and went weaker after 8 UTC.

simone

18-09-2005, 09:29

Hi all,
strong and stable signal this morning, great results using the DWT. The dip in the graph at 0724 was due to changes on the datastream, better audioquality today then using 20.48 kbps, probably the EPG is much slower now (only 0.5 kbps), still not using UEP anymore.
73, Simone

df8uo

18-09-2005, 09:32

Attached the result from last night. Same behaviour as in Simones log.
73, Daniel

simone

18-09-2005, 20:18

Hi all,
good results this evening in the car, mostly mobile reception, I suspect the only big dropout was my fault ;)
73, Simone

simone

19-09-2005, 15:34

Hi all,
quite good results this morning, see attachment
73, Simone

simone

20-09-2005, 15:47

Hi all,
some problems in the last 15min, see attachment
73, Simone

simone

20-09-2005, 19:31

Hi all,
good results using the FhG software, see attachment
Also, it seems transmissions from Rampisham and Norway are not sychronized, although they use the same datastream.
73, Simone

simone

21-09-2005, 20:46

Hi all,
pretty good results with the changed configuration this morning, see attachment
73, Simone

simone

22-09-2005, 15:31

Hi all,
great results again this morning, see attachment
73, Simone

simone

23-09-2005, 11:15

Hi all,
strong and stable signal today, see attachment
Btw seems there was no DRM signal today from Norway until now.
73, Simone

dk8cb

23-09-2005, 19:54

Hi,

here is a report of the first 16 minutes. Strong signal with excellent reception.

Roland

dk8cb

23-09-2005, 19:59

Hi,

There was a sync loss incident at about 18:54 UTC with a perfect looking spectrum but no audio, this was suddenly followed by an exploding spectrum about half a minute later, see attached screenshot.

Roland

dk8cb

23-09-2005, 20:04

And here is my report on the last 15 minutes.

Roland

simone

24-09-2005, 19:10

Hi all,
strong co-channel interferer in the second half this evening, like last Saturday, seems the interferer is only there on Saturdays, did not notice it on other days the last week.
73, Simone

simone

25-09-2005, 19:01

Hi all,
great results, just one dip when the "exploding spectrum" occured again at 1854, like two days ago.
73, Simone

simone

26-09-2005, 15:21

Hi all,
great results this morning, see attachment
73, Simone

simone

27-09-2005, 15:25

Hi all,
again perfect results, see attachment
73, Simone

Digger

27-09-2005, 16:16

Hi all,

Perfect this morning in Switzerland also. See attached log.

Terje

simone

30-09-2005, 19:04

Hi all,
perfect results this evening, using the DWT, see attachment
73, Simone

dk8cb

30-09-2005, 20:06

Quite good over here as well.

Roland

carknue

01-10-2005, 12:13

Good results this morning with DWT. The first 2 dropouts were caused by myself, I think. The last was due to low signal at the end.

Digger

01-10-2005, 12:53

Hi,

Let me just add to the previous entry: Good here too...

Terje

simone

01-10-2005, 15:32

Hi all,
great results using the DWT this morning, see attachment
@ Carsten: signal strength indicated by the DWT was 53- 51 dbµV, using DX mode
73, Simone

simone

01-10-2005, 18:49

Hi all,
pretty good results until 1830, then the co-channel interferer started again like always on Saturdays, seems to be a regular transmission at this time on Saturdays.
73, Simone

carknue

01-10-2005, 19:01

Same here, good until 18:30. Co-channel interference should be avoided!

simone

02-10-2005, 10:19

Hi all,
some problems at the beginning this morning, transmission started late at 0713, again a break at 0721- 0727, see attachment
73, Simone

simone

02-10-2005, 19:12

... and perfect results this evening
Simone

simone

03-10-2005, 11:24

Hi all,
perfect results again this morning using the DWT
Simone

carknue

03-10-2005, 19:11

Also perfect results this morning with DWT indoor.

carknue

03-10-2005, 19:32

And here are the evening results as a comparision between DWT and AOR 7030. Both with 100%.

simone

03-10-2005, 19:50

Hi all,
good decoding but low SNR with a Sony SW7600GR/ telescopic antenna, that I am currently working on. The two dropouts caused by myself making some adjustments.
Simone

simone

05-10-2005, 20:39

Hi all,
strong signal and good results this evening, see attachment
(not sure about the dropout at 1846, might be the exploding spectrum problem again?)
Simone

simone

06-10-2005, 19:02

Hi all,
quite good, except the exploding spectrum (like at 1851) problem seems to occur preferably during this hour.
Simone

dk8cb

07-10-2005, 20:16

Report attached.

Roland

Per

08-10-2005, 08:34

Hi,

Strong and a good signal here as well.

Txt msg: "Going abroad? Take the BBC with you - see how to receive us around the world at bbcworldservice.com"

Time: 07:30 UTC until close down at 08:30. Result CDA: 94%.

simone

08-10-2005, 19:17

Hi all,
perfect in the first half hour this evening, then the usual collision with RSI´s AM transmission on Saturdays
Simone

carknue

08-10-2005, 21:04

Perfect this morning with DWT.

mitajohn

09-10-2005, 19:10

Hi all,
A very good result today.
John

Andreas

10-10-2005, 19:14

perfect here this evening.

FritzWue

11-10-2005, 08:42

Good signal and good audio with that low bitrate:

simone

11-10-2005, 19:41

Hi all,
perfect results this evening, EPG has been removed, higher audio bitrate again like already mentioned on 7320 kHz
Simone

Andreas

12-10-2005, 19:14

Same stable results as on Monday (except the higher bitrate). Seems to be a well chosen frequency.

Julian

13-10-2005, 09:07

Hi,

if anyone can measure the relative delay between the Rampisham and Kvitsoy transmissions, we will try and steer the network into the target area.

regards

Julian

(BBCWS)

dk8cb

13-10-2005, 09:15

Hi Julian,

I think this requires special equipment. Even if I let run two instances of a DRM decoder on the same PC, both decoding the same DRM IF signal, there will always be an audible delay between both audio outputs.
If one repeats this experiment several times by stopping and restarting both decoders again and again, this amount of delay doesn't seem to be constant but somehow seems to depend on the state of the operating system at the very moment when the decoding programs were started.

Roland

Digger

13-10-2005, 09:37

Originally posted by Julian
Hi,

measure the relative delay between the Rampisham and Kvitsoy transmissions,

Hi Julian,

Did you mean this?

Terry

Hi Roland,

OK, I see the point. Sorry I got it wrong.
Terje

dk8cb

13-10-2005, 09:45

@ Digger,

Hi Terje,

the task is to minimize the DRM bitstream delay between both TX sites, which are running in a MFN (multi frequency network), so that a receiver which switches from one to the other, will not notice a time skip in audio because both transmitters transmit the same data at the same time. Not so easy to adjust with both stations not using exactly the same hardware.

Roland

mitajohn

13-10-2005, 19:08

Hi all,
A very good to excellent result today.
John

Julian

14-10-2005, 08:11

Hi Roland,

thanks for a perfect explanation

dk8cb

14-10-2005, 08:47

Hi Julian,

I think, the best place to measure the delay between both data streams off the air would be Rampisham.
From reports on the forum, Kvitsoy should be well receivable in southern England, at least when Rampisham is not transmitting on 9410 kHz simultaneously.
Using two identical DT700 monitoring receivers, one tuned to Kvitsoy, the other to Rampisham itself and recording the audio output, one on the left and the other on the right audio channel on a PC, one would get an audio file from which the time delay could be precisely measured using a wave analyzer PC program.
I would recommend the Greenwich time signal for this because it produces a sharp reference.

Roland

Julian

14-10-2005, 08:50

Hi Roland,

sounds like a good idea - I'll talk to James.

Julian

simone

14-10-2005, 12:36

Hi Julian,
I think the measurement shoud be done in the target area of both the transmissions rather than at the Tx control ouput at Rampisham.
And I don´t have to wait for the time signal, there are lots of chances if you look at the waveform analyzer.
Simone

dk8cb

14-10-2005, 21:21

Perfect reception but I listened only for a short period of time.

Roland

carknue

15-10-2005, 08:37

Quite good reception this morning with DWT.

simone

15-10-2005, 09:29

Hi all,
good results with the DWT/ loop indoors, but not as good as usually on the longwire
Simone

simone

15-10-2005, 19:14

Hi all,
good results at the beginning using the loop antenna indoors with the FRG100, in the last 30 min the usual interference
Simone

carknue

16-10-2005, 08:41

Perfect this morning with DWT

simone

16-10-2005, 08:49

Hi all,
also perfect results using the idoor loop with the DWT and in the last 25 min with the FRG100, see attachment
Simone

carknue

16-10-2005, 19:03

And also perfect this evening with DWT.

simone

16-10-2005, 19:33

Hi all,
also perfect results with the new version of the DRM software and the DWT/ loop indoors
Simone

simone

17-10-2005, 15:41

Hi all,
perfect results this morning with the new version of the FhG software
Simone

simone

18-10-2005, 16:54

Hi all,
not sure what caused the big dropout, otherwise perfect with the new version of the FhG software.
Simone

simone

19-10-2005, 15:39

Hi all,
good results, one of the dips occured also on the transmission from Norway, see comparison attached
Simone

carknue

19-10-2005, 21:03

Perfect reception, nice music programme and very good sound quality!

carknue

20-10-2005, 18:17

Also perfect this morning.

carknue

20-10-2005, 19:27

Also perfect this evening with DWT. Transmission started with beeps instead of BBCWS. Reaaly good music programme in this hour.

simone

20-10-2005, 20:19

Hi all,
perfect results, one dip for changing the configuration, as the transmission had started with VT digital configuration and beeps ;)
Simone

carknue

21-10-2005, 18:23

Perfect as usual this morning.

simone

21-10-2005, 20:52

Hi all,
good results this evening, see attachment
Simone

simone

22-10-2005, 09:03

Hi all,
great results this morning using the DWT, see attachment
Simone

carknue

22-10-2005, 19:04

Perfect only until 18:30, then strong co-channel interference on with DWT.

simone

22-10-2005, 19:12

Hi all,
good results in the first half, then bad results as usual due to the collision with RSI, see attachment
Simone

simone

23-10-2005, 20:11

Hi all,
once again perfect results, see attachment
Simone

simone

24-10-2005, 18:05

Hi all,
again perfect this morning, see attachment
Simone

simone

24-10-2005, 19:22

Hi all,
strong and stable signal this evening, small dips in the first 25min caused by switching between the transmissions from Rampisham and Kvitsoy, now also synchronized.
Simone

simone

25-10-2005, 20:39

Hi all,
not as strong as usual but still good results, again MFN sychronization with the transmission from Norway worked for my location
Simone

simone

27-10-2005, 05:24

Hi all,
perfect results besides the short interruptions that also occured on 1296 kHz.
Simone

simone

28-10-2005, 13:47

Hi all,
great results this morning, see attachment
Simone

simone

29-10-2005, 19:37

Hi all,
the worst results ever on this transmission, also again the clash with RSI in the second half. The only BBC WS transmission that worked reliably this evening was on MF.
Simone

simone

30-10-2005, 19:13

Hi all,
good results today, other than scheduled transmission ended at 1900 (not 1930, btw same with Kvitsoy), which is good as there is already an AM transmission on this frequency from 1900.
Simone

dk8cb

30-10-2005, 21:13

Quite good until shortly before 17 UTC.

Roland

hsseppo

01-11-2005, 17:50

Hi,

5875 kHz was in Helsinki 94 %

Seppo

edit: moved from the 5875 kHz Kvitsoy thread, Simone

FritzWue

01-11-2005, 19:15

Good signal and audio, but for the last hour I'm a little too close at the dutch border.

simone

01-11-2005, 22:12

Hi all,
good results in the car, except the last 25min.
The first half was mostly mobile reception.
Simone

simone

03-11-2005, 22:32

Hi all,
great results during the 4hours, not sure what caused the dropout at 1653, see attachment
Simone

FritzWue

05-11-2005, 19:05

Great result, after shutdown switched to mediumwave to follow the radioplay. :cool:

simone

05-11-2005, 20:25

Hi all,
good results, some dropouts due to a problem at my end, changed reeciver antenna at 1730.
Simone

carknue

06-11-2005, 00:14

perfect results this evening.

dk8cb

06-11-2005, 17:51

Very good reception but too much soccer for me, so I stopped listening.

Roland

df8uo

06-11-2005, 20:06

Hi all,
perfect result here.
73, Daniel

simone

06-11-2005, 20:16

Hi all,
goode results but some interference at 1820- 1835, see attachment
Simone

@Roland: wrong Tx coordinates in your results again, seems to be Kvitsoy, not Rampisham, better use the latest DRMcalc version!

carknue

06-11-2005, 20:31

Same Problem here, but the signal was very low in that period.

simone

07-11-2005, 21:43

Hi all,
a very weak signal from 1730 for about an hour, quite good for the rest of the transmission
Simone

simone

08-11-2005, 20:31

Hi all,
this evening a weak signal in the last 40min, don´t know the reason for the dropout at 1630, see attachment
Simone

FritzWue

09-11-2005, 19:20

Driving from 44359 Dortmund to 45326 Essen.
Two dropouts, first in a tunnel, then a longer red light stop under a noisy high voltage line.

simone

09-11-2005, 21:23

Hi all,
a weak signal in the last hour, seems late in the evening the MF transmission is more reliable than HF as the same problem often occurs on the transmission from Norway.
Simone

mitajohn

10-11-2005, 18:07

Hi all,

Today's result on 5875, signal not too strong and with fading. Look at the log.

John.

simone

10-11-2005, 20:11

Hi all,
a weak signal in the last half hour, quite good until 1830, see attachment
Simone

dk8cb

10-11-2005, 21:07

Not bad over here.

Roland

dk8cb

13-11-2005, 18:09

Hi,

Rampisham's signal faded out rather early today.

Roland

simone

13-11-2005, 18:52

Hi all,
quite goo until 1715, then only a very weak signal, see attachment
Simone

simone

14-11-2005, 19:56

Hi all,
perfect results until 1750, see attachment
Simone

mitajohn

15-11-2005, 19:32

Hi all,

Very good results for 35 mins.

John.

simone

15-11-2005, 20:53

Hi all,
a weak signal from 1745- 1830, also a big (Tx related?)dropout around 1545, see attachment
Simone

midre

15-11-2005, 22:52

quite good results on 5875 kHz, using DEGEN DE 31 loop antenna indoors ( ...except the tx timeout ). Similar to Simones results.

This small and cheap (!) antenna is a good choice for travellers and drm beginners,
- and for me too ! ;-))
Thanks for the info about it (... in the thread >DEGEN DE 31 active loop antenna < )

regards, Michael

simone

16-11-2005, 20:17

Hi all,
perfect for 2hours, but from 1730 signal was too weak, see attachment
Simone

FritzWue

16-11-2005, 20:52

Driving home from 35401 Marburg.
Good in the beginning, but had to change to 1296kHz near 58507 Luedenscheid.
There was a strong carrier visible 5kHz up.

FritzWue

17-11-2005, 19:08

Driving home from 48301 Nottuln to 48712 Gescher.
No interference today, good results:

simone

17-11-2005, 19:32

Hi all,
pretty good for almost 2.5 hours, see attachment
Simone

simone

18-11-2005, 19:11

Hi all,
perfect decoding until the end using the DWT/ longwire, even when the signal got weaker, see attachment
Simone

dk8cb

18-11-2005, 19:20

Quite good but what happened after the scheduled closedown?

I was away at that moment. Any clues?

Roland

simone

19-11-2005, 19:55

Hi all,
quite good until 1850, not sure what caused the problems in the last 10 min, see attachment
@ Roland: Be more careful with the Tx coordinates in this thread or use the latest DRMcalc version, it´s Rampisham!
Simone

dk8cb

19-11-2005, 21:40

Originally posted by simone
@ Roland: Be more careful with the Tx coordinates in this thread or use the latest DRMcalc version, it´s Rampisham!

I know, but I don't mind as much as you seem to. ;)

If the new version had an adjustable background colour ...

So here is my short report. ATTENTION: wrong TX-RX distance! ;) Good reception actually.

Roland

FritzWue

20-11-2005, 19:04

That's what happens when the conditions are gone.

ATTENTION:

WRONG DISTANCE, RIGHT COLOUR! :D :p

simone

20-11-2005, 19:53

Hi all,
here is a comparison of the 2 HF transmissions tonight, good results from Rampisham until 1740, problems from Norway started quite early, see attachment
Simone

simone

22-11-2005, 21:04

Hi all,
quite good until 1800, then a weak signal until the end of the transmission, see attachment
Simone

FritzWue

23-11-2005, 20:24

Driving north from Koblenz via A48 and A3 to near Duesseldorf.
In the car the signal was also was perfect for a long time and getting weaker after 18:00 UTC, so I tuned to 1296kHz then.

simone

23-11-2005, 21:38

Hi all,
only an unattended log, but seems transmission started a bit late, later conditions got worse from 1730, see attachment
Simone

dk8cb

27-11-2005, 19:21

Problems with fading towards the end of transmission.

Roland

carknue

28-11-2005, 20:09

Nearly perfect reception, only some unkown problems around 17:30UTC.

carknue

29-11-2005, 19:23

Even better than yesterday, but it is not so easy anymore to get 100% with DRMcalc 5.0:D

simone

29-11-2005, 20:59

Hi all,
a few dropouts, but still much better in the last hour than on many other days, see attachment
Simone

FritzWue

29-11-2005, 21:50

Driving on the A45 from 63450 Hanau to near 35390 Giessen.

carknue

30-11-2005, 19:36

Not good today.

FritzWue

19-12-2005, 19:57

Driving up the A45 from A3 to near Siegen.

dk8cb

19-12-2005, 23:32

Not good but perhaps due to local interference.

Roland

dk8cb

19-12-2005, 23:33

Not bad until the path broke down at 16:54 UTC.

Roland

dk8cb

21-12-2005, 19:29

Just a short report.

Roland

simone

22-12-2005, 20:13

Hi all,
not too bad until the end tonight, see attachment
Simone

dk8cb

23-12-2005, 21:27

Conditions were strange tonight. Signal faded to almost zero for a while but later recovered almost to its previous strength.

Roland

df8uo

26-12-2005, 18:57

Hi all,
in the beginning some audio, then signal faded away.
73, Daniel

dk8cb

26-12-2005, 19:08

Hi,

propagation conditions on this frequency are always strange, and there was again an intermediate fading period as seen on many other days. Later, signal faded out and didn't recover again.

Roland

carknue

27-12-2005, 17:30

Strong, stable and perfect until 16:49 yesterday.

simone

27-12-2005, 19:46

Hi all,
perfect results except the last half hour, see attachment
Simone

simone

27-12-2005, 19:48

... and here a more detailed analysis of the last hour, showing the drop in signal strength
Simone

simone

28-12-2005, 19:34

Hi all,
nearly perfect decoding despite large variation in signal strength until 1730, only a weak signal then, see attachment
Simone

simone

29-12-2005, 20:45

Hi all,
apart from a very weak period at 1700- 1730 quite good this evening un til the end.
Simone

dk8cb

30-12-2005, 23:30

Very good until the path broke down almost completely.

Roland

dk8cb

01-01-2006, 20:06

A bit of interference at times.

Roland

dk8cb

02-01-2006, 19:06

Reception was rather bad today with a lot of interference.

Roland

dk8cb

03-01-2006, 20:52

Again not good today.

Roland

mitajohn

06-01-2006, 19:08

Hi all,

A rather good result during a stormy evening.

John.

simone

06-01-2006, 20:36

Hi all,
pretty good until 1745, see attachment
Simone

carknue

07-01-2006, 19:06

Quite good today.

simone

07-01-2006, 21:08

Hi all,
quite good in the last hour tonight, see attachment
Simone

simone

10-01-2006, 17:08

Hi all,
good results on mostly mobile reception in rural area, see attachment
Simone

FritzWue

12-01-2006, 19:36

Driving from Koblenz to Cologne on the A48 and A3, good results until fade out started:

dk8cb

12-01-2006, 21:44

There was some interference from above after 17:32 UTC.

Roland

carknue

13-01-2006, 19:14

Nearly perfect.

simone

14-01-2006, 21:42

Hi all,
perfect until the end tonight, see attachment
Simone

dk8cb

14-01-2006, 23:01

Hi,

not so perfect over here.

Roland

simone

18-01-2006, 21:35

Hi all,
not much from 1700- 1800, quite good for the rest of the time.
Simone

simone

19-01-2006, 19:54

Hi all,
bad results today, see attachment
Simone

simone

20-01-2006, 19:10

Hi all,
some quite good periods but sometimes a weak signal, see attachment
Simone

radiomann

20-01-2006, 21:04

Very good until the path broke down almost completely.

Audio 95.3

Roland

Attachment: 5875_051230_dk8cb.png

Again interference from CRI's transmission.

Audio 99.7

Roland

Signal was weaker and more unsteady than usual, local interference level was also high.

96.3

Roland

Not quite what you said 99% or more, though good results but still unstable for one reason or another, still think your average listener will put up with that?

Paul

simone

20-01-2006, 21:10

Hi Paul,
in my location at times when HF does not work I get a perfect signal on MF, so usually I am pretty close to 99% (Tx problems included) on average for the 18 hours of daily transmissions of the BBC WS!
Maybe I am more lucky than others.
Simone

simone

21-01-2006, 20:44

Hi all,
great results until the end of the transmission this evening, see attachment
Simone

carknue

22-01-2006, 19:03

Results from this evening. Good only until 18:12 UTC.

dk8cb

22-01-2006, 22:19

Originally posted by carknue
Good only until 18:12 UTC.

Further away from the transmitter site (distance shown in the plot is wrong and should read 1062 kms), it took another 40 minutes for the path to partially break down.

I would really like to know the reason for the quite regular break in the propagation on this frequency which, interestingly always seems to recover after a few minutes, at least for a short while.

Roland

simone

28-01-2006, 19:21

Hi all,
bad results in the last half hour on transmissions from Rampisham and Kvitsoy, see comparison attached
Simone

dk8cb

29-01-2006, 19:20

Perfect.

Roland

mitajohn

31-01-2006, 19:04

Hi all,

Not bad...

John.

dk8cb

04-02-2006, 19:28

Very strange conditions on this frequency today.

Roland

carknue

04-02-2006, 19:36

Signal got lost 10 minutes more early here. I was not patiently enough to wait for its comeback.

simone

04-02-2006, 20:58

Hi Carsten,
in our area signal came back only in the last 10min of the transmission, before no decoding for about 1 hour, see attachment
Simone

simone

08-02-2006, 20:28

Hi all,
good results this evening, but the "exploding spectrum" problem occured a couple of times at 1648- 1700
Simone

simone

10-02-2006, 20:06

Hi all,
signal got weak in the last hour, see attachment
Simone

dk8cb

11-02-2006, 17:36

Hi,

occasionally, there is a strange encrypted signal, perhaps a voice signal, just below Rampisham's channel today. The bandwidth of this signal extends into the DRM spectrum, see screenshot.

Roland

dk8cb

11-02-2006, 17:37

Here is an audio sample of the strange interference signal recorded with Dream set to AM mode.

Roland

simone

11-02-2006, 19:03

Hi all,
great results until the end of the transmission this evening, did not notice interference
Simone

dk8cb

11-02-2006, 23:22

For some reason, I often don't get good results on this frequency.

Roland

simone

18-02-2006, 19:20

Hi all,
a weaker signal from 1800- 1830, see attachment (green graph showing signal strength)
Simone

carknue

19-02-2006, 00:10

Perfect in this short logging period.

dk8cb

19-02-2006, 23:08

Not bad.

Roland

simone

20-02-2006, 19:11

Hi all,
quite good results apart from a few dropouts from 1800- 1830, see attachment
Simone

simone

22-02-2006, 19:56

Hi all,
good conditions again this evening, don´t know what caused the 3 dropouts (maybe Tx related?).
Simone

simone

23-02-2006, 20:22

Hi all,
perfect results from 1545, see attachment
Simone

simone

24-02-2006, 19:09

Hi all,
great results apart from a dropout just before 1800
Simone

carknue

24-02-2006, 21:21

Hi Simone,

I also got the dropout just before 18 UTC and some other before. And had a bit more problems at before the end. Green graph is fieldstrength in dBµV.

simone

25-02-2006, 19:38

Hi all,
good results (apart from the dropouts caused by the exploding spectrum, seems to occur more often again since yesterday), second attachment also shows signal strength on indoor reception.
Simone

dk8cb

25-02-2006, 20:05

A bit of fading and some interference from above.

Roland

simone

26-02-2006, 20:13

Hi all,
strong signal, quite good results besides some interference from 1800- 1830, the big dropout at 1552 might have been the exploding spectrum problem again.
Simone

FritzWue

27-02-2006, 19:10

GOOD SIGNAL, GOOD AUDIO!
Driving from near Osnabrueck to 48712 Gescher via 30, A31:

simone

27-02-2006, 19:32

Hi all,
strong signal until the end, good results besides 3 (maybe Tx related?) dropouts.
Simone

carknue

27-02-2006, 20:13

Hi Simone,

I would say, that the TX / Encoder side is quilty;)

mitajohn

28-02-2006, 19:13

Hi all,

Until 1845 the result was good then the signal degraded slowly.

John.

carknue

28-02-2006, 19:25

Hi all, a really strong signal today. Only one dropout at 18:11UTC.

simone

28-02-2006, 19:49

Hi all,
similar results as Carsten, perfect apart from the Tx problem at 1811
Simone

carknue

01-03-2006, 19:53

Perfect results today. I added a 10 dB attenuation for this transmission today. The results is a 1 dB higher SNR today.

simone

01-03-2006, 21:20

Hi all,
strong signal and no Tx problems today
Simone

carknue

02-03-2006, 19:25

Very catastrophically today! I often saw the P23B Label.

simone

02-03-2006, 19:50

Hi all,
strong signal, but as Carsten mentioned, lots of sync losses caused by Tx problems (like on 7320 kHz before)
Simone

simone

03-03-2006, 19:06

Hi all,
a weaker signal in then last half hour, quite good for the rest of the transmission (one probably Tx related dropout)
Simone

simone

04-03-2006, 19:13

Hi all,
strong signal and good results until the end
Simone

dk8cb

04-03-2006, 23:09

Quite good.

Roland

simone

06-03-2006, 20:50

Hi all,
good results despite interference from the adjacent channel above in the last half hour
Simone

simone

07-03-2006, 20:03

Hi all,
quite good again today apart from a problem around 1825, with bws like on 7320 kHz
Simone

mitajohn

09-03-2006, 19:03

Hi all,

A rather good result except for the last 15mins before the end of the log.

John.

simone

09-03-2006, 19:27

Hi all,
quite good apart from some Tx related problems at the beginning.
Simone

Andreas

10-03-2006, 19:05

Todays result is good either.

simone

10-03-2006, 19:08

Hi all,
pretty good results again today
Simone

dk8cb

12-03-2006, 17:05

Very good until shortly before 17:00 UTC when, for whatever reason, the TX went of the air unexpectedly.

Roland

PS.: Signal has just returned.

dk8cb

12-03-2006, 17:29

There are severe TX problems on this transmission now.
Several times in a row, the TX signal has turned awfully broadband, see screenshot of the last incident which is carrying on for a few minutes now.

Consequently, SNR is low and decoding has stopped now.

Roland

dk8cb

12-03-2006, 18:22

Not worth further logging due to the TX problem.

Roland

simone

12-03-2006, 19:46

Hi all,
strong signal until the end, but no decoding due to a Tx problem causing low SNR from 1720 (looked similar to the problem on Feb 23rd)
Simone

simone

13-03-2006, 19:25

Hi all,
great results today
Simone

FritzWue

13-03-2006, 20:02

Also good results in the car driving from near Rheine to Gescher on the A30 and A31:

simone

14-03-2006, 19:18

Hi all,
not as good as usual in the first 1.5 hours, from 1630 signal was stronger and SNR improved about 4 dB
Simone