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View Full Version : Radio Prague on 9505 kHz from Rampisham

sveron
11-10-2006, 21:49
Hello to all, good news,

I thought it would be better to tell it in advance, so everyone can try logging it when it will start. Starting friday, 13th october, Radio Prague will transmit its english and german programmes twice a week with the following schedule :

All transmissions from Rampisham, UK
on 9505 kHz with 35 kW and 095° (towards Vienna)

Fridays
1330-1400 UTC in german
1400-1430 UTC in english
Saturdays
1300-1330 UTC in german
1330-1400 UTC in english

Sources :
DRM schedule on www.drm.org
Radio Prague, german sce : http://www.radio.cz/de/artikel/84074

Good reception,
Stephane
Baldo34
13-10-2006, 14:09
Hi all,
very strong signal (up to S 9+ 50 dB) at my location.
See screenshot.
73, Klaus
simone
13-10-2006, 14:21
Strong signal, no problem using the Roberts MP40/ telescopic antenna indoors.
Simone
simone
13-10-2006, 14:36
Perfect results using the DWT/ longwire, started the log after the reconfiguration at 13:32
Simone
sveron
13-10-2006, 18:34
Hello to all,

Good signal here with DWT, a little more SNR after 1357 UT, when I unplugged the laptop from AC power. Good audio bandwith (around 13,5 kHz), and the programme also included mention of these new DRM broadcasts. But, always local interferences here, so the little fading causes many dropouts. UEP transmission helped a little during these dropouts.
DWT software shows the use of Czech language.

(logged with the VT Digital parameters from the start)

73, de Stephane
Sixten
14-10-2006, 14:10
Hi all,
Very strong signal S9+20 dB her 40Km North of Stockholm. This freq. is very good for DRM no AM problem .
And transmission in mode UEP give very stabile DRM signal.
:)
mitajohn
14-10-2006, 14:13
Hi all,

A nearly excellent result. The signal was rather stable but weak and reached up to 36 dBuV with low SNR. The sound impression was good [~13.5 kHz BW].

John.
simone
14-10-2006, 14:46
Great results again today.
@ John: I donīt agree with you on the audio quality, it did not sound good, the configuration allows about 13kHz, but actually audiobandwidth was restricted to 8.5 kHz (sometimes 10 kHz with music)
The signal between 10 and 13 kHz was only background noise, that could also been heard when there was no audio transmitted.
Simone
Digger
14-10-2006, 15:09
Hi,

Cannot agree; lot of QSB and loss of decoded audio. Do not know what the reason could be for this when I look at the other entries....

Terje
carknue
14-10-2006, 16:02
Hi all,

perfect reception. Absolute no problems with this frequency. Audio should sound better with 20kbps.
f1tay
14-10-2006, 18:28
Very bad reception at Paris.
Daniel
stegewicht
16-10-2006, 17:12
Hello,
this is a reception-report for Radio Prague on 9505kHz via VT Digital Rampisham.
mitajohn
20-10-2006, 14:46
Hi all,

Not a good result this Friday. After 1400 a significant decrease in SNR noticed as seen in the 1st file. In the 2nd file you can see the difference in the sound BW between male and female voices. It looks like a VBR audio.

John.
Sixten
20-10-2006, 14:55
Hi all.


Very good today, S9+20db and SNR 26-27db.
:)
simone
20-10-2006, 15:05
Strong signal again, only one dropout due to a datastream problem.
Simone
Digger
20-10-2006, 15:39
Hi,

Today was very good, and SNR was high. I noticed that there was a longer break in the sound just at the beginning, about 4-5 minutes or so. I also looked at the audio spectrum; the transmitted sound seems to end at 8-9 kHz, but there is room up to 13 kHz.

Terje
sveron
20-10-2006, 20:11
Hello,

I got this screenshot at the beginning of today's transmission. SNR was not enough to allow to get any audio or text. That was the first time I saw the "Test/Measurement" field in the kind of broadcast.

By the way, very bad reception here, much noise on all bands. Winter and ceramic heaters and various kinds of stuff are coming back around to ruin DRM reception !

73, de Stephane
mitajohn
21-10-2006, 14:02
Hi all,

A very good result without any sound but silence. Anyway, silence is golden...

John.
dk8cb
21-10-2006, 14:05
Perfect reception with a good signal but no audio, apart from a very faint trace in the background.

Roland
Sixten
21-10-2006, 14:07
Hi.

A very good result without any sound but silence. Anyway, silence is golden...
:confused:
Andreas
21-10-2006, 15:11
No surprise - as reception was good in Munich and Stockholm it was also here in between. And no sound either :mad:
simone
21-10-2006, 16:51
Pretty good results, audio only at the very beginning with VT digital announcements :(
Simone
simone
27-10-2006, 14:39
Great results again, no more textmassages and audio started a bit late.
Simone
Sixten
28-10-2006, 14:12
Hi all.

Very strong and stabile signal her today. Sound probelm i start.
mitajohn
28-10-2006, 14:14
Hi all,

A very good result today. The signal was enough stable up to 38-40 dBuV. Take a look at the 2nd file where is a screenshot of the audio spectrum of the music played closing down the English programme. Looks like a VBR (?) digital audio.

John.
simone
28-10-2006, 15:37
Good results again, audio problems at the start, configuration with text messages but actually no text messages were sent.
@John: Audio bandwidth of Radio Prague seems to be only 8.5 kHz, above is only noise, so thatīs why it looks like this.
Simone
carknue
28-10-2006, 16:08
Very strong signal and perfect reception. Content startet a bit too late.