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Digger
20-03-2009, 06:52
There was something, but only for about 5 minutes around 1835... :confused:

FritzWue
20-03-2009, 20:13
Band opened late tonight, then a TX failure, and the rest was good, 99.8% CDA.
Something changed in the TX drift.

Digger
20-03-2009, 21:18
I left the receiver on the frequency and was not aware of any transmission until I heard voices from downstairs. The signal was there from at least 15 minutes before any decoded audio appeared. This was around 1830. The rest is pretty much like Fritz's log, perhaps mine is a little bit better. 100 % CDA from 1858 UTC. :) :)

PP5AZF-Ataliba
21-03-2009, 20:14
(19:23-20:00)

FritzWue
21-03-2009, 20:15
Today again TX problems in Chile and VAC sync problems here:

Digger
21-03-2009, 22:56
More or less the same here....

FritzWue
22-03-2009, 20:07
Strong noise floor, good reception, some vac resyncs here:

Digger
22-03-2009, 20:11
The signal was very weak during the first 20 minutes, after that was perfect.

FritzWue
23-03-2009, 19:13
Again no signal tonight.
Getting tired of waiting, CVC has lost a listener... :mad:

Digger
24-03-2009, 21:48
Never give up... a weaker signal at the beginning, but it improved gradually during the transmission.

Digger
26-03-2009, 22:03
Much better tonight despite the miserable conditions.

mathias_s
27-03-2009, 20:19
Dear Friedrich,

I'm sorry that there was no transmission on monday, but we were using our transmitter for another service, as back up. I hope we will not need to do this so often.

Kind regards,

PP5AZF-Ataliba
28-03-2009, 20:23
Decoded audio 98,74%

Digger
29-03-2009, 10:44
A weak signal at the beginning, but that was compensated by a late TX switch-off. ;)

FritzWue
19-04-2009, 20:29
Transmission scheduled 18:00 UTC started 1850 UTC.
Signal is undecodable, distorted, high intermodulation, probably overmodulated,
see screenshots. :(

Digger
19-04-2009, 20:42
No signal to be seen from my 2nd QTH... :(

PP5AZF-Ataliba
02-11-2009, 22:05
Propagação variando um pouco.

Telspace
03-11-2009, 20:32
Not good here. Think the DWT has a problem.

FritzWue
06-11-2009, 19:15
Early end, wintertime conditions:

FritzWue
07-11-2009, 18:20
Didn't last long today:

FritzWue
09-11-2009, 20:11
Strange propagation conditions tonight.
When the signal was best unfortunately the transmitter failed several times.

FritzWue
12-11-2009, 18:52
Poor propagation, the signal is there, but this is about all I can see tonight:

Telspace
17-11-2009, 20:14
Today's log.

FritzWue
17-11-2009, 21:04
I was on frequency for the first 20 minutes but could hardly see anything in the panadapter.

Digger
17-11-2009, 22:15
I think we have to wait until Spring to listen to SGO again... Not a single trace in Stockholm either.

FritzWue
18-11-2009, 18:43
Looked a little better in the beginning today, but the season really seems to be over:

Telspace
18-11-2009, 20:13
Today's log

PP5AZF-Ataliba
11-12-2009, 19:29
CVC 17.860Khz and TDF 17.875 Khz.
As duas emissoras transmitindo ao mesmo tempo, com afastamento de 5 khz uma da outra. Espetacular!The two stations transmitting at the same time, with removal of 5 kHz apart. Spectacular!.

PP5AZF-Ataliba
21-12-2009, 02:57
Reference 19.12.2009:

http://drmrx.org/forum/showpost.php?p=58485&postcount=73

PP5AZF-Ataliba
21-12-2009, 02:58
Reference 20.12.2009:

http://drmrx.org/forum/showpost.php?p=58492&postcount=74

PP5AZF-Ataliba
05-01-2010, 20:09
Muita instabilidade na propagação.

FritzWue
22-01-2010, 19:23
About a month's time after the shortest day here on the northern hemisphere
CVC is coming back:

PP5AZF-Ataliba
24-01-2010, 20:18
Decoded audio 88,47% (18-20h)

PP5AZF-Ataliba
28-01-2010, 03:56
Decoded Audio 90,03% (18:07-20:00h UTC)
FAC CRC 99,97%

Digger
04-02-2010, 18:27
Not much, but the conditions are starting to improve in this direction. Max 7 dB SNR. But not for very long . . .

FritzWue
05-02-2010, 18:46
Propagation is getting better, even got some audio. :)
TX frequency still too high, transmission started on ~17860.44 kHz with TX running down.

Digger
05-02-2010, 19:11
Not even a whisper of DRM signal here !! I listened for 10 minutes just after 18 UT.

drmdab
06-02-2010, 18:33
Nice to hear a little bit of CVC again! :)

FritzWue
06-02-2010, 19:11
I came home late and did not expect to see anything.
To my surprise the band was still open here until sudden fadeout at 18:55 UTC:

PP5AZF-Ataliba
06-02-2010, 20:07
Excelente propagação.
Decoded Áudio 100% (19:22-19:58 utc):D

FritzWue
08-02-2010, 20:21
Very short tonight! :rolleyes:

mathias_s
09-02-2010, 12:01
Hi all!

I'm happy to see that the signal is reaching Europe again, and that many of you are enjoying it! :)

Ant-SWL
09-02-2010, 20:29
Hi Mathias,

good con-dx this evening. A late tune in here to CVC. Nearly perfect result the last 20 Min. :) !

FritzWue
10-02-2010, 19:11
Hi Mathias,

the season for CVC is starting in europe, results are getting better! :)

Digger
11-02-2010, 18:22
I suffer from buzz from a nearby house, probably from a improperly installed heat pump. Grrrrr....

FritzWue
11-02-2010, 18:57
12 minutes longer than yesterday: :)

FritzWue
12-02-2010, 19:23
Give me more! :D
I stopped the log when TDP Montsinery on 17755 kHz appeared.

lmaes
12-02-2010, 19:31
Give me more! :D
I stopped the log when TDP Montsinery on 17755 kHz appeared.

Very curious to see your report on 17755 kHz!

FritzWue
13-02-2010, 18:24
Early end of log, need the rx for testing some filters. :o

FritzWue
14-02-2010, 18:22
Weak signal today:

FritzWue
15-02-2010, 20:26
Good today! :)
At 19:00 UTC I changed to TDP 17755 kHz.

Digger
16-02-2010, 21:03
The conditions are picking up down here too. At least twenty minutes of listening.

FritzWue
20-02-2010, 20:12
The robust tx coding of CVC is getting better and better. :)
I switched to TDP 17755 kHz at 19:00 UTC.

PP5AZF-Ataliba
20-02-2010, 20:20
Decoded audio 91,64% (18:19-20:00h)

FritzWue
21-02-2010, 21:19
Very good, one local dropout:

FritzWue
24-02-2010, 21:17
Low SNR, stable signal, good reception:

Digger
25-02-2010, 06:42
Low signal strength here, too low for decoding. I believe I have to wait another two or three weeks before conditions improve.

FritzWue
25-02-2010, 19:36
Weak signal tonight:

FritzWue
26-02-2010, 18:43
Getting weak early tonight:

Digger
26-02-2010, 19:29
Even weaker and earlier end here.

FritzWue
28-02-2010, 19:34
Good reception tonight with a sudden end:

Digger
28-02-2010, 20:44
I just tuned in to see whether there were signs of life of CVC. CVC was on the air.

@Mathias: I hope everything is OK with you and yours, and my sympathy with the people of Chile after the tragic earthquake.

FritzWue
01-03-2010, 21:13
Audioframes but no audio during the first 33 minutes, then audio level still too low:

Digger
02-03-2010, 08:52
Oops, I forgot, and started logging after Fritz's log ended. I noticed that the audio was about 20 dB below normal. However, the signal soon faded out here.

FritzWue
02-03-2010, 19:07
Good reception with a sudden end.
Some days ago the oscillator was "preheated", but not today, ran like a rabbit.
:rolleyes:

Digger
02-03-2010, 19:22
Not much luck at all here this evening... :rolleyes:

FritzWue
04-03-2010, 20:05
Four minutes after start something happened in the ionosphere flattening the impulse response while signal strength stayed about the same. About 30 minutes later the standard conditions came back.

Digger
05-03-2010, 06:45
@Fritz:
I was not logging anything last night, but perhaps it was the aftermath of this C-flare that messed up the conditions?

FritzWue
05-03-2010, 19:07
@Digger
No c-flare needed to mess up the transmission tonight! :D
No modulation for the first 34 minutes, only a carrier on 17860.0(!) kHz.
Transmission startet at 18:39 UTC on ~17860.34 kHz.
Had to leave early.

Digger
05-03-2010, 20:07
Hm, I just said it *might* have been a cause for the hickup... Here is the last of today's CVC in Switzerland...

FritzWue
06-03-2010, 19:53
Not bad tonight, signal just faded out, otherwise OK:

FritzWue
07-03-2010, 19:50
Solid reception tonight:

Digger
07-03-2010, 20:13
Solid reception between 1825 - 1915 here, then nothing...

Digger
09-03-2010, 19:11
A weaker signal after 19 UTC plus someone's plasma TV in the vicinity killed the decoding effectively. :mad: :eek:

FritzWue
10-03-2010, 20:03
Signal a little weak tonight:

mitajohn
10-03-2010, 20:05
Hi all,

The last 15 mins from a very weak signal.

FritzWue
11-03-2010, 19:00
Poor propagation tonight and some strange effect with the snr.
I restarted PowerSDR, VirtualAudioCable and DReaM, but it did not help.

Digger
11-03-2010, 19:36
I switched on too late. A very weak signal here too. Seems there is no TV running here this evening. Very quiet.

Digger
12-03-2010, 19:43
No disturbing TV QRM tonight either, but the conditions are still too poor.

FritzWue
13-03-2010, 20:05
My washing machine was on and causing problems. :(
During the last ten minutes I was testing antenna configs, but the dipole used b4 was the best.

FritzWue
14-03-2010, 20:17
Low SNR but getting better. :)

Digger
15-03-2010, 20:04
New neighbours, new QRM, :mad: probably a plasma TV, as it is quiet during the day. This impedes the reception on 17 MHz immensely.

Digger
16-03-2010, 20:10
Neighbour away tonight, dark in the house and no (probably TV) QRM. My best log so far this season. :)

FritzWue
16-03-2010, 22:41
Good reception with locally caused regular dropouts:

FritzWue
18-03-2010, 20:30
Same tonight, log in two parts as I tried to listen to TDP on 17755 kHz in between:

FritzWue
19-03-2010, 20:11
Good reception tonight, but to the end strange audio distortion on the studio sound.
Zipped mp3 sample attached.

FritzWue
21-03-2010, 20:10
Sound OK today.
Flashed the MoBos BIOS to a later version today and restored all old settings.
Hope these dropouts are not related to that.

PP5AZF-Ataliba
21-03-2010, 20:43
Decoded audio 97,45% (18:18-20:00h):D

FritzWue
23-03-2010, 20:04
Less local dropouts, overall good reception:

PP5AZF-Ataliba
23-03-2010, 20:32
Propagação muito instável.

FritzWue
24-03-2010, 20:09
Similar to yesterday, I remember times, when SNR was 3 to 4 dB better.

Digger
24-03-2010, 20:09
Need a second opinion up here in the Stockholm area... A few squirts of sound at the very end.

FritzWue
24-03-2010, 20:10
@Terje: ...obviously too far in the north... :o

Digger
25-03-2010, 08:25
@Fritz: That may be right; Sixten said the other day "there is some noise on the channel". I think the Aurora yesterday at Level 8 might have been a disturbing factor too. I'll check back on this QRG again in the beginning of April.

mathias_s
03-11-2010, 17:36
Dear all,

We are now running our test transmission here on 17860 kHz again.

Thanks for all your reports!!

Digger
03-11-2010, 18:30
There is only one problem: There is nothing we can receive...

mathias_s
03-11-2010, 18:56
Hi!
Sorry, we were adjusting the transmitter and the it had a problem. I hope it soon will be on air.

FritzWue
07-11-2010, 20:15
Nice to hear CVC back on air again! :)
The old problem is back: Low SNR caused by TX intermodulation. :o
The panadapter screenshot shows 2 minutes of summing peak display.

FritzWue
08-11-2010, 20:06
This was all I could get out in 51 minutes tonight:

mathias_s
10-11-2010, 12:33
Dear all,

On Sunday 14th are we going to run some extra hours. A special event will take place in Indaiatuba, Brazil. http://www.fenarcom.com.br/programacao.htm.

Frequency: 17860 kHz
Schedule: 16 – 22 UTC

PP5AZF-Ataliba
10-11-2010, 15:11
14:00h - domingo
Palestrante: Rafael Diniz
Duração: 2 horas
Tema: A escolha do padrão de rádio digital e o padrão DRM como a melhor opção para o SBRD (Sistema Brasileiro de Rádio Digital)
Será abordado o importante tema da escolha do padrão técnico de Rádio Digital para o RBRD (Sistema Brasileiro de Rádio Digital) que está na iminência de ser definido, assim como a apresentação do padrão DRM de Rádio Digital, um padrão aberto que permite a radiodifusão sonora digital na faixa de Ondas Longas, Médias, Curtas e VHF banda 1 e 2 com boa qualidade de áudio e que por nós é defendido para o SBRD. Apresentação prática de uma transmissão/recepção DRM na faixa de Ondas Curtas e do projeto DRM-Brasil.
http://www.fenarcom.com.br/programacao.htm

Dear all,

On Sunday 14th are we going to run some extra hours. A special event will take place in Indaiatuba, Brazil. (http://www.fenarcom.com.br/programacao.htm).

Frequency: 17860 kHz
Schedule: 16 – 22 UTC

FritzWue
12-11-2010, 20:29
For me in europe it's getting more and more difficult to get anything out of this transmission:

PP5AZF-Ataliba
15-11-2010, 14:11
Transmissão especial para FENARCOM (www.fenarcom.com.br).

OBS: este sinal foi captado em São José-SC, no sul do Brasil.
A FENARCOM foi em Indaiatuba-SP.

http://maps.google.com.br/maps?f=q&source=s_q&hl=pt-BR&geocode=Fa6zn_4dbG0v_Skn8DIlqbTIlDFsr4EOtUYTJg%3BF fwIW_4dcToa_SkzVsNnEDYnlTFb97lnaLhVlA&q=from:+indaiatuba+-sp+to:+s%C3%A3o+jos%C3%A9-sc&sll=-25.045792,-47.504883&sspn=9.368574,14.128418&ie=UTF8&ll=-25.005973,-49.086914&spn=18.695624,28.256836&z=5&saddr=indaiatuba+-sp&daddr=s%C3%A3o+jos%C3%A9-sc

FritzWue
20-11-2010, 18:59
Not much left here in wintertime, audio quality was good! :D

FritzWue
21-11-2010, 19:03
Very similar today:

FritzWue
24-11-2010, 18:15
1. Screenshot of summing peak display 18:07 to 18:10 UTC without rx preamp.
2. Screenshot of summing peak display 18:17 to 18:20 UTC with rx preamp.

FritzWue
27-11-2010, 20:14
Surprise, surprise, dead live longer! :D

FritzWue
29-11-2010, 10:03
I was late again, first dropout at 18:40 UTC was caused here,
reception seems to have been good for the first hour:

FritzWue
30-11-2010, 19:14
The band was dead early today, only some traces of a signal a few minutes after 19:00 UTC.

FritzWue
03-12-2010, 18:58
After nothing the last days a little sign tonight even some moments with label! :)
The panadapter screenshot shows the summing peak display for the first half hour.

FritzWue
05-12-2010, 20:04
A little strange tonight, but better than nothing. :D

FritzWue
08-12-2010, 20:10
1h 8min with 98.9% cda and 19dB avg. snr, summing peak panadapter screenshot

FritzWue
09-12-2010, 18:34
This is all I saw during the first five minutes, then the signal faded away:

FritzWue
19-12-2010, 20:23
On the average both inverted L antennas (300°+30°) fed as dipole work best for CVC:

FritzWue
21-12-2010, 20:07
For 1.5 hours nothing, then the signal appeared here after 19:30 UTC.
The second screenshot shows the summing peak display for the last 20 minutes.

mathias_s
07-01-2011, 18:32
Dear all,

We were off air for several days, but since January 5 we are on air again.

Digger
09-02-2011, 19:44
Some signal observed here this evening...

FritzWue
09-02-2011, 20:47
Some signal observed her this evening...
RIGHT! CVC .... Welcome back to Europe! :)

FritzWue
10-02-2011, 20:05
Reception still very unstable, TX switched off at 20:00 UTC.
I left to monitor 17755 kHz then.

FritzWue
11-02-2011, 20:05
The reception result is not really good yet. :rolleyes:
The intermodulation noisefloor starts at less than 25dB below signal.

FritzWue
12-02-2011, 20:03
Not good tonight:

FritzWue
13-02-2011, 21:35
...even some audio! :D

FritzWue
19-02-2011, 20:48
Not bad.....getting better! :D

FritzWue
20-02-2011, 20:36
I left early to monitor the HE3OM tests.

FritzWue
24-02-2011, 20:09
A typical result at this time of year:

FritzWue
26-02-2011, 20:08
70% audio in two good parts, not bad:

FritzWue
02-03-2011, 20:20
Good for the first hour:

FritzWue
05-03-2011, 20:07
Good audio for over one hour:

FritzWue
06-03-2011, 21:50
Getting better:

FritzWue
09-03-2011, 20:05
1h 24min of good reception tonight. :)

FritzWue
19-03-2011, 21:59
One TX problem, the rest was good:

FritzWue
20-03-2011, 20:04
Not bad. :D

Digger
20-03-2011, 20:19
Not good. :rolleyes: (But that is usually the case until mid April here).

FritzWue
21-03-2011, 20:11
Compared to yesterday the other way around, sudden loss of propagation:

FritzWue
31-10-2011, 20:03
Good signal, but I was too late, still getting used to wintertime since yesterday.
SNR Maximum [dB]: 23.4 :)

FritzWue
01-11-2011, 20:03
A little bit of everything today:
Bad propagation conditions and a longer TX failure. :rolleyes:
I am using a 12m long groundplane antenna with 4 elevated radials for the 49m band now.
The feedpoint is about 7 meters above ground, works better than my high horizontal wires.

mathias_s
02-11-2011, 19:29
Dear all,

As some of you already know, we are now broadcasting on 17860 kHz again.
Thanks for all your reports!

FritzWue
02-11-2011, 20:04
Hi Mathias,

99.1% CDA today and SNR max. 25.2 dB on my groundplane antenna for the 49m band! :D
Did you retune the TX for the winter season?
Never seen such high snr before!

mathias_s
03-11-2011, 11:44
Hi Mathias,

99.1% CDA today and SNR max. 25.2 dB on my groundplane antenna for the 49m band! :D
Did you retune the TX for the winter season?
Never seen such high snr before!

Hi Friedrich,

We have done some adjustment and it is working better I see.

pksato
03-11-2011, 17:13
Hello,
Yesterday, Nov 2, I had good reception at first 25 minutes, around 20dB of SNR.
The rest of reception was bad.

FritzWue
03-11-2011, 20:05
From 18:00 UTC on there were three TX failures tonight.
Condx only fair, signal strength did not exceed S9 = 50µV at 50 Ohm.
The second hour was Beto Reymunde at his best. :D

FritzWue
04-11-2011, 20:16
Within a short time the signal was decodable and then a loss of fieldstrength to the end.
99.98% CDA for 92 minutes, some problems with the live audio.

FritzWue
05-11-2011, 20:18
Problems tonight.
There was a strong AM station 5 kHz down, probably REE with a special transmission. :confused:

FritzWue
06-11-2011, 20:03
I was late, strange condx tonight:

FritzWue
07-11-2011, 20:07
Good reception at 99.9% CDA during the second hour. :)

pksato
07-11-2011, 20:28
Saturday 5 and Sunday 6 reception logs.
Testing new loop antenna, around 63cm of diameter.

FritzWue
08-11-2011, 20:03
Perfect reception for 74 minutes:

FritzWue
09-11-2011, 20:12
Very mixed result today, 100% CDA during the last 40 minutes:

Digger
10-11-2011, 20:10
Not one single bit sighted in Stockholm. :eek:

FritzWue
10-11-2011, 20:10
Strange condx tonight:

FritzWue
11-11-2011, 20:08
99.9% CDA for 78 minutes:

FritzWue
12-11-2011, 18:21
Again no DRM tonight?
...because of Radio Espania on 17855 kHz with some boring special sport transmission: :(
17670 kHz would be a nice replacement! :D

FritzWue
14-11-2011, 20:07
Again no DRM yesterday, and not good today:

pksato
14-11-2011, 21:26
No signal this last week end.
Even, no other signals, like RNZI or AIR.
:(

FritzWue
15-11-2011, 20:09
Late start, 1.25 hours here to listen to Beto Reymunde today, not bad. :)

Ant-SWL
15-11-2011, 20:11
Mixed result with 30 Min. good dx-conditions.

pksato
16-11-2011, 19:35
Yesterday results.
Some audio on first hour.

FritzWue
16-11-2011, 20:06
68 perfect minutes today:

Digger
16-11-2011, 20:16
Not even the teeniest, weeniest fizz up here . . . :eek:

FritzWue
17-11-2011, 20:05
Monitored only during the second hour, good reception for 30 minutes.

FritzWue
18-11-2011, 20:06
Could have been a good evening, but a lot of transmitter problems tonight. :(
Around 19:42 UTC there was another TX break, and for the rest the signal was completely down,
probably no propagation any more. :confused:
EDIT:
Yes, propagation gone, RNZI and TDP are also totally down now.

FritzWue
19-11-2011, 19:49
Just 8 minutes, rather short listening pleasure tonight, DReaM finally crashed.

FritzWue
20-11-2011, 20:05
It took almost an hour until the signal was back on air again. :(

pksato
21-11-2011, 19:38
Saturday 19 and Sunday 20 reception logs.
On Sunday, signal is gone after half hour. I don't know if returns.

FritzWue
21-11-2011, 20:07
On Sunday, signal is gone after half hour. I don't know if returns.
Hi pksato,
the signal came back one hour later, see my report above. :o

Tonight almost perfect reception, SNR Maximum [dB]: 24.9 ! :)

FritzWue
22-11-2011, 20:02
Late start, early end, great show tonight! :D

FritzWue
23-11-2011, 20:07
Still going strong:
Good reception for 1h 35min. :)
Even at low signal level we can see that the SNR is limited by the TX distortion.
Good audio quality! Sometimes buffer problems/ stuttering audio.

FritzWue
24-11-2011, 20:03
The signal disappeared in the band noise in between:

FritzWue
25-11-2011, 19:01
No DRM today? :confused:
AM 17680 kHz is on air.
EDIT: Absolutely no DRM signal today. :(

mathias_s
28-11-2011, 14:45
Dear all,

Our DRM equipment had a problem on Friday. I will see if I can get it work again.

mathias_s
30-11-2011, 17:59
Dear all,

After a few days without DRM transmission, we will now be on air again.
The DRM computer had a problem.

FritzWue
30-11-2011, 20:09
Incomplete report in two parts today.

As the audio vanished short after start I was listening to CVC via the Live 365 stream on the internet and did not notice that DReaM crashed a little later. Over an hour later I restarted DReaM with the same result: The signal and audio were gone after a few minutes.
The propagation is very unstable at this time of year.

FritzWue
01-12-2011, 20:17
Funny condx tonight. :eek:
At start the signal was there with about 5 dB SNR and vanished quickly.
After an hour it came back to rise sharply within a few minute to up to now unseen
SNR Maximum [dB]: 25.0 :) It stayed that way to the end. :D

FritzWue
02-12-2011, 20:14
Not much today. :rolleyes:

FritzWue
03-12-2011, 20:04
Nothing today.
There was something visible only during the last five minutes.

FritzWue
04-12-2011, 20:06
Hmpf.....too late... :rolleyes:

pksato
05-12-2011, 18:20
Weekend reception
Sat. not so good (55% of audio);
Sun. bad (15%);

FritzWue
05-12-2011, 19:42
Today rf signal back to normal, but two problems:
1. At start there was an electrostatic rain+snow mix here,
the panadapter baseline sommetimes went up by almost 30 dB.
2. There was distortion on the audio source , Mathias switched off early.

FritzWue
07-12-2011, 20:13
Tonight something between very good and nothing:

FritzWue
08-12-2011, 20:05
No audio decoding today:

FritzWue
09-12-2011, 20:11
What a difference compared to yesterday! :eek:
Very good reception for this time of year. :)

FritzWue
10-12-2011, 20:14
Bad reception tonight.
Looks like there was a TX intermodulation problem.

pksato
11-12-2011, 17:38
Bad reception yesterday.
Unattended reception.

FritzWue
11-12-2011, 20:13
Even worse today. :o

FritzWue
12-12-2011, 19:23
Nothing today.

FritzWue
13-12-2011, 20:08
Again absolutely nothing today:

FritzWue
14-12-2011, 20:04
Alomost...but not really...

FritzWue
15-12-2011, 20:07
A lot more today, but not really good:

FritzWue
16-12-2011, 20:05
Everything down again today,
but I got some seconds of audio at the end not showing up in the minute interval of the report:

FritzWue
18-12-2011, 20:04
2X Batman today: :D

FritzWue
19-12-2011, 20:23
The transmission started at about 10 dB over noise,
but the signal faded out within the first 15 minutes.
About an hour later the signal came back, but not enough for a good result.

FritzWue
20-12-2011, 20:04
Wrong season... :(

FritzWue
22-12-2011, 20:06
Better today:

FritzWue
23-12-2011, 19:16
DReaM crashed today:

pksato
24-12-2011, 23:42
Today, not good.
Average SNR below of need to MSC recovered, only 13.88dB.

Merry Christmas.

FritzWue
25-12-2011, 20:13
Several dB are missing:

pksato
25-12-2011, 22:12
Not good again.
SNR between 1.33dB to 17.80dB, average of 13.86dB.
Audio Frames: 26.43%
FAC CRC: 98.71%

I suggest to improve protection level and reduce audio bitrate, perhaps help to recover more audio frames.

FritzWue
26-12-2011, 20:03
Today I forgot to switch on the log. :rolleyes:
The signal was there for the first 40 minutes with snr peaking 11 dB and no audio.

@pksato:
CVC tested a lot in the past and the mode in use is a good compromise.
DRM was made to transmit FM like audio quality.
At SNRs below 14dB the bitrate has to be reduced so much that AM usually sounds better then, and you will still get a lot of dropouts when your SNR goes down to 1dB.
So a better antenna, less local noise etc. is the solution.
Perhaps try CVC in AM on 17680 kHz at the same time.

Regards
Fritz

pksato
27-12-2011, 03:51
Best result yesterday,
SNR: 4dB to 18dB, avr 16dB.
73.71% of audio frames decoded.

Reduce noise (RFI) is near to impossible, unless I move to the Andes. :)
I don't have space to install a descent antenna. I use a ~1m in diameter loop antenna or 1.27m wipe (dipole) antenna.

pksato
28-12-2011, 03:41
Yesterday, 27/12
Irregular reception.
SNR: 6.48dB to 18.14dB, avr 15.90dB
Audio: 55.17%
FAC: 98.92%

pksato
29-12-2011, 02:59
28/12/2011
Audio: 79.88%, FAC: 99.29%
SNR: 11.87dB to 21.35dB, Avr: 18.45dB

I missed 20 minutes, trying to use Degen DE312 (philco ph-60) as RF front end, good signal level, but, nothing decode.

FritzWue
29-12-2011, 20:43
The little signal visible at start faded away soon to come back later,
but as good as no decoding possible.

FritzWue
30-12-2011, 20:15
Some audio today but several dB are missing for good reception.

FritzWue
01-01-2012, 20:05
The signal level was very low tonight. :rolleyes:
Mathias, all the best for 2012, signal can only get better. :D

FritzWue
02-01-2012, 20:13
I came home late, much better condx today:

FritzWue
03-01-2012, 20:04
DReaM crashed today, the signal did not come back:

pksato
04-01-2012, 02:31
My last two days logs, 02/01 and 03/01
Regular reception, ~60% audio frames decoded.

FritzWue
05-01-2012, 20:10
The SNR was always very promising, but the result was disappointing:

pksato
06-01-2012, 03:29
Weird condition on Thursday afternoon, strong signal (30dB, >S9) at begin, but, low SNR.
Audio only at the end of transmission, even with a weak (normal) signal.

FritzWue
06-01-2012, 21:04
...well....hmpf...

pksato
07-01-2012, 03:18
Good results this Friday afternoon, strong signal, peak of S9+30.
89% audio frames decoded;
SNR max 20.35dB.

FritzWue
07-01-2012, 18:48
Nothing tonight, the band is in a terrible state.
EDIT:
Later on CVC appeared:

pksato
07-01-2012, 22:10
Unstable reception this afternoon, 50% audio decode, SNR between 5dB to 20dB, Avr 15dB.

FritzWue
08-01-2012, 20:16
Some signal at the beginning, then nothing for a long time, then only unmodulated carrier, and at last DRM again, but too late as the signal faded out again.

pksato
08-01-2012, 20:34
Regular reception this Sunday.
SNR Max, 20dB.
No DRM signal between 18:43 to 19:33, only carrier.
DRM server problems again?

FritzWue
09-01-2012, 20:06
Wow, a lot of Beto Reymunde today: :)

FritzWue
10-01-2012, 20:17
Again quite a lot of audio today:

pksato
11-01-2012, 02:43
Very good reception this Tuesday.
94% of audio recovered.
AVR. SNR 19.85dB.
And, strong peak signal, S9+30.

FritzWue
11-01-2012, 20:07
Less signal than yesterday:

pksato
12-01-2012, 02:39
88% audio frames.
SNR AVR. 20dB.

FritzWue
12-01-2012, 20:06
Only 6.8% CDA here today:

pksato
13-01-2012, 02:56
Very good result yesterday (rainy day), 96.24% audio frames, SNR Avr 18.10dB.

FritzWue
13-01-2012, 20:09
Wow, 40 minutes of "Welcome to the show!". :D

FritzWue
15-01-2012, 20:08
Nothing at all today:

pksato
15-01-2012, 20:55
Poor reception today, good antena signal, but low SNR on DReaM. Only 5% of audio.
In the beginning the DRM signal gone, and came a AM NHK transmission for some seconds.

FritzWue
16-01-2012, 19:32
Nothing visible, the band is dead today.

pksato
16-01-2012, 20:19
Today, transmission stopped after 40min.
Same as last days, good RF signal and poor SNR.
Transmitter or Server problems?

mathias_s
17-01-2012, 18:50
Hi all,
We have tried to adjust the transmitter, but it looks like there is a problem with it.

FritzWue
17-01-2012, 19:36
Sorry to read that, but even heard a very short moment of audio today. :D

FritzWue
18-01-2012, 18:41
Switched off very early:

FritzWue
19-01-2012, 18:59
No DRM tonight. :(
CVC in AM on 17680 kHz is weak but with noise reduction I can listen to it.

FritzWue
20-01-2012, 18:28
Again no DRM signal, only AM on 17680 kHz, weak at start, later better: