View Full Version : 6015 kHz TDP from Issoudun
Great results this morning, looks like some Tx problems this afternoon.
Simone
I was here when the transmission should have begun, but the audio feed was late. I was out during the break later on, which can be seen in Simone's log also. Nice to see some 35+ dB SNR :)
Perfect results today, strong and stable signal on both transmissions.
Simone
Great results again today.
Simone
One hour of TDP with perfect decoding. Only the "music" could be better...
Almost perfect results today, the only dropout might have been a local problem.
Simone
Once again perfect results today.
Simone
Something seems to have switched off on an adjacent channel around 1525. After that the SNR became much better. 100% CDA.
A bit better overall today.
Perfect on both transmissions today.
Simone
Good results yesterday and today.
Simone
Perfect results this afternoon.
Simone
Great results for the two hours today.
Simone
Looks like a Tx problem at the start of the afternoon transmission, apart from that perfect on both transmissions today.
Simone
Two perfect logs today :)
Simone
Perfect results apart from a Tx problem on the first transmission.
Simone
Perfect on both transmissions today.
Simone
Pefect results today.
Simone
Great results again today.
Simone
Almost perfect for the two hours of transmission today.
Simone
Seems there was a Tx problem on the transmission this morning, otherwise great results as usual.
Simone
A small tx-break (?) at beginning, otherwise a perfect result !
Great results again yesterday.
Simne
Perfect results on the first transmission, but only an AM signal instead of DRM this afternoon.
Simone
No problems today.
Simone
Great results again yesterday and for the two hours today.
Simone
A short log with good results.
Two perfect logs yesterday.
Simone
Strong signal, the only problem was an interruption in the modulation. The TX carrier was present during the break.
Another perfect log today.
Simone
Hello All,
Just a report from last Sunday. No so good at the beginning but better during the last hour. Still to close to the transmitter !!
Michel
Almost perfect results for two hours on Sun (19t Oct).
Simone
Looked like Tx problems on both transmissions yesterday.
Simone
Good reception, but a wavy SNR curve.
Seems there was a Tx problem at the beginning of the second hour, other wise good results.
Simone
Perfect results today on both transmissions.
Simone
Silent listening with great results.
Testing the Kchibo again on lower frequencies. I don't know, but the transmission was not very stable. Perhaps because of the strong adjacent channels - the KK-DRM 01 has NO selectivity... :rolleyes:
Perfect results again today.
Simone
Perfect results on both transmissions.
Simone
Results from the past two days, perfect apart froma deep dip (Tx related?) yesterday.
Simone
FritzWue
16-11-2008, 16:02
Good music:
Some dropouts in the last ten minutes today.
Simone
Two perfect logs today.
Simone
Great results on both transmissions today.
Simone
Perfect results this afternoon.
Simone
Two perfect logs today.
Simone
FritzWue
23-11-2008, 17:03
My log is also split into two parts because I switched off half way when the signal disappeared for a moment at 15:00 UTC.
You have to add another 6 dB to the fieldstrength as I was testing a passive preselector.
Some dropouts were caused by a sudden increase in signal overloading dream with fixed rx gain.
After end of transmission the signal is still visible as always before, so something is still leaking, but nevertheless this is one of the most linear signals I've seen in the panadapter.
At 14:43 UTC the modulation failed for a minute, so I took a screenshot to show the interference situation.
Perfect results for both hours.
Simone
FritzWue
30-11-2008, 16:06
Getting weaker to the end:
A weaker signal than usual, no problems yesterday but today around 1500 and in the last 10 minutes.
Simone
There was a TX break at 15 UTC, otherwise the last hour was perfect.
BTW, the reception was perfect with the telescopic antenna on the Morphy Richards RX with my modded 230VAC power adapter in the middle of the living room. :p
Great results today.
Simone
Perfect this morning. The signal suddenly became weaker for a short while 15 minutes into the log, but this did not impair the decoding at all.
Some (Tx?) problems in the first 20 minutes, perfect results then.
Simone
Signal strength dropped about 20dB for the last 15 minutes.
Simone
Again problems with a weak signal towards the end of the transmission today.
Simone
Good results on both transmissions apart from the deep dip at 1554.
Simone
Great results for two hours today.
Simone
A weak signal in the last 20 minutes, no audio decoding then.
Simone
Almost perfect results today.
Simone
FritzWue
13-12-2008, 14:14
Boy, what a linear signal! :)
DREAM had problems without agc when the signal hit the ceiling during signal peaks,
in real life the SNR was high all the time.
Then the noise floor was still visible about +/-30kHz.
Hi all,
Not good at all.
Jos.
Signal was too weak in the last half hour.
Simone
Better results today than yesterday.
Simone
Good Signal, good result. Minor problems with local interference. Audio is ok :) .
Attachment 2: Spectrum here after tx-switch-off in Issoudun.
Again problems towards the end.
Simone
Smilar results today.
Simone
Signal from Issoudun was very strong. Minor fading here. Short log with perfect result.
Great results for 2 hours yesterday, short break at 1500, lower SNR then, today signal got too weak after the first 20 minutes.
Simone
FritzWue
31-12-2008, 15:56
Big (and wide) signal.....gone within two minutes:
Again problems towards the end.
Simone
Great results for the two hours today.
Simone
Some problems towards the end.
Simone
Pretty good results on both transmissions today.
Simone
FritzWue
11-01-2009, 16:02
Good result:
Quite good results, lower SNR in the second half, problems in the last 5 minutes.
Simone
Good results until the end today.
Simone
FritzWue
16-01-2009, 15:42
Muenster North-A1-A43-Nottuln
Perfect signal, perfect sound
Good results today.
Simone
Once again problems in the last 10 minutes.
Simone
Perfect results on both transmissions.
Simone
Great results today (different Tx in the second hour?)
Simone
Good results again today.
Simone
A very short log. Just at the end the signal gave away.
Perfect results today.
Simone
Thanks All for sending reports on TDP / TDF 6015 kHz DRM transmission from Issoudun to Germany.
73's / regards.
Jacques GRUSON F6AJW
Perfect results during both hours, lower SNR in the second hour, maybe using a different Tx?
Simone
Great result today. Stable SNR, minor dips made by local problems.
Perfect results during both hours.
Simone
Pretty good results apart from the deep dip at 15:48.
Simone
Good results again today on both transmissions.
Simone
Perfect results again.
Simone
Good results in both hours today, obviously a different transmitter being used in the second hour.
Simone
One deep dip in each of the logs today.
Simone
FritzWue
18-02-2009, 20:06
Greven-A1-A43-B525-Coesfeld
Yesterday´s results.
Simone
... and good results again this afternoon.
Simone
Perfect results this afternoon.
Simone
Only half an hour, and the reception was perfect.
FritzWue
21-02-2009, 16:02
Perfect signal and content:
Perfect results here too.
Simone
Very good result here :).
After a switch in Issoudun at 1500 UTC the SNR was drop down from 34 dB/SNR to 29 dB.
Great results for both hours.
Simone
Perfect results on both transmissions today.
Simone
FritzWue
24-02-2009, 18:25
Gescher-A31-A30-Rheine
Perfect mobile reception:
Maybe a Tx problem on the first transmission, perfect results this afternoon.
Simone
Perfect results again today.
Simone
FritzWue
26-02-2009, 17:48
Herten-A2-A31-Gescher
Good music on my way home! :)
FritzWue
28-02-2009, 14:09
Perfect! :)
Great results yesterday and today.
Simone
Two perfect logs today.
Simone
Unattended logs from today, looks like a short Tx problem on the first transmissions, otherwise great results on both transmissions.
Simone
Good results today.
Simone
Two perfect logs today.
Simone
Pretty good reults on both transmissions today.
Simone
Perfect results yesterday morning, minor dropouts despite good SNR in the afternoon.
Simone
Perfect results on the first transmission, some minor dropouts this afternoon.
Simone
A deep dip in the first log and dropouts with a weaker signal towards the end this afternoon.
Simone
Some minor dropouts again yesterday afternoon.
Simone
A perfect first hour, some problems later.
Simone
Almost perfect results this morninh, some minor dropouts again this afternoon (multipath problems).
Simone
As usual, perfect results yesterday on the first transmission, a few small dips in the afternoon.
Simone
Similar results again today.
Simone
Good results with the typical small dips in the afternoon.
Simone
Perfect in the first hour, one big and some minor dropouts again in the second hour.
Simone
Today some small dips in the graphs of both transmissions.
Simone
FritzWue
25-03-2009, 12:17
Werne-A1-A43-Nottuln
A few small dips in the afternoon.
Simone
A slightly weaker signal on the first transmission, results as usual (incl. small dips) in the afternoon.
Simone
Good results with a few small dips as always in the afternoon.
Simone
Some small dips again, also a problem at 1430.
Simone
Looks like a datastream problem in the first half hour this morning, results as usual this afternoon.
Simone
FritzWue
31-03-2009, 11:24
Very good reception but still the old isolation problem with the signal visible here all day:
Hi Simone, Andy, Fritz and All,
Thanks for steadily sending reports on 6015 kHz TDP transmission from Issoudun.
Please have a look in particular next Sunday!?
Regards / 73 from Jacques
Thanks Jacques.
Perfect results this morning, a few small dips this afternoon.
Simone
Similar results again today.
Simone
Perfect results on the first transmission, minor dropouts on the second one.
Simone
Minor dropout and SNR-dips here too at same time as in the log from Simone!
First hour with fading, wide IR and some TX - Problems ( sudden loss of power ? ). Signalstrength on S-Meter... 7-9...
Second hour with high SNR and one tx-break (?). 35,08 db was logged at 1552 UTC. Audio was perfect :).
I did not notice these problems in the first hour, only a few minor dropouts as usual, SNR was about the same in both hours here, the break at 1515 is the same as in Andy´s log, but I did not watch it.
Simone
Great results on both transmissions, these small dips on the second transmission did not occur today (the only dropout there is from my system I guess, sorry).
Simone
Hi Simone and All,
I guess today that the same tranmitter (called NIL) was used on both transmissions. On Sundays only, an other transmitter (called Mississipi) is used for 1400 - 1557 UTC transmission without break at 15OO UTC. Compared performances of the two transmitters could be currently slightly different.
Jacques
Some small dips on both transmissions today.
Simone
Simone,
As you know, MISSISSIPI was used today on both transmissions (NIL under maintenance) so we have small dips on the two hours...
NIL is a better performer compared to Mississipi which is normally used only on Sundays 1400-1557 UTC and for 1500-1557 UTC transmissions the other days.
Regards.
Jacques
Thanks Jacques, yes seems Mississippi is causing the small dips, as expected, normal operation today with perfect results on the first transmission and some minor dropouts in the afternoon.
Simone
Seems there were Tx problems on the first transmission, a late start, a break at 1220, after that lower SNR. Good results apart from the usual minor dips in the afternoon.
Simone
The usual minor dropouts this afternoon again.
Simone
Typical results with "Mississippi" on air for two hours, also a Tx problem at 14:45.
Simone
Perfect results this morning, some small dips this afternoon.
Simone
Excellent results on the first transmission, only very few small dips this afternoon.
Simone
Seems there was a Tx problem at 1532, otherwise typical results on both transmissions.
Simone
Hi Simone!
I received your yesterday reports!?
Jacques
Sorry Jacques!
Should be OK now.
Simone
Yes it is, Simone!
As you can see, I have a look to your post...
Thanks.
Jacques
Yes it is, Simone!
As you can see, I have a look to your post...
that was just a test ;) (of course not!)
today´s results attached.
Simone
A late start and some problems on the second transmission today.
Simone
Normal results today, first transmission perfect, small dips on the second one.
Simone
FritzWue
19-04-2009, 17:19
The problem with this transmission is to describe the audio quality!
I logged with high sample rate and small buffer size today, so some glitches...
...but the audio quality was really amazing at 21 kbps! :)
Seems Mississippi was on duty again today, some small dips for the whole two hours of transmission.
Simone
Similar result here. Small dips in SNR and Audio. Good signal strength and good audio as always :) !
Good results again today.
Simone
Excellent results on the first transmission, a ten minute Tx break this afternoon, maybe "Nil" on air after the break?
Simone
Yes, Simone, I think you are right: better flat SNR after breakdown...
Jacques
A problem at the beginning this afternoon, otherwise good results, maybe still using Nil?
Simone
Good results on both transmissions today.
Simone
Not so good today.
Simone
Perfect results on the first transmission, typical small dropouts on the second one.
Simone
Some small dips for the whole two hours (obviously using Mississippi).
Simone
Typical results today, perfect transmission this morning, small dips in the graph in the afternoon.
Simone
Perfect reception and high SNR.
Perfect this afternoon too. Even a fraction higher SNR today.
Results from yesterday, as usual.
Simone
Some problems today, a longer break this afternoon besides the usual small Tx related dips.
Simone
Not so bad this afternoon.
Simone
A short log with an almost perfect result.
A short Tx problem this afternoon, otherwise quite good results on both transmissions.
Simone
Seemed there was no transmission today :(!?
Simone
A short log with an almost perfect result.
Perfect results this morning, some small dips this afternoon as usual (obviously Mississippi on air again).
Simone
Results as usual with some small dips in the afternoon.
Simone
Typical results again today.
Simone
Seems there was a problem on the first transmission, no small dips this afternoon (not using Mississippi?).
Simone
Normal results today.
Simone
As usual, perfect results on the first transmission, some small dips this afternoon.
Simone
Some problems on the first transmission, pretty good this afternoon.
Simone
Some problems on the first transmissions again today, also it seems Mississippi was on air during both hours.
Simone
Again some Tx problems on the first transmissions, typical small dips in the graph this afternoon.
Simone
Pretty good results on the first transmission, not as strong and stable as usual with big variations of the SNR on the second transmission.
Simone
Some minor dips in the audio graph as usual from Mississippi, again large variation in SNR.
Simone
Quite good on both transmissions, especially this afternoon a stronger and more stable signal than the past days.
Simone
Good results on both transmissions, apart from a problem at 1516- 1520.
Simone
Perfect on both transmissions, so I guess NIL was used for both.
Simone
Pretty good results with only a few very small dips.
Simone
My result from today with the National RF-B60.
Hi Simone, Terje and All,
Thanks for regular reports.
BTW, what is a National RF-B60?
Regards.
Jacques
Almost perfect results on both transmissions yesterday.
@ Jacques: The National B60 is an older portable receiver, maybe you better know it as Panasonic RF-B60 (http://www.universal-radio.com/catalog/portable/rfb60.html).
Simone
(http://www.universal-radio.com)
Thanks Simone for info about National B60 / Panasonic RF-B60.
I own something more or less similar: Grundig YB 400, which is very good, but not used in DRM as its modification (done by Bilbao University) is not recommanded by Sat-Schneider!?
I see that you have modified time scale on the afternoon transmission; fine!
Regards.
Jacques
Hi Jacques and all,
I bought the RF-B60 in Japan in the 1980's and it works fine. I m still trying to improve its AGC, but as you can see in this log, it is not really necessary. ;)
The setup is (a bit scarce) described here: http://omnirep.ch/drm/nationalrfb60.html
Perfect results for the two hours today.
Simone
Congratulations Simone, 100 % this time!
Jacques
Perfect reception. The SNR was slightly improved after adding 100 uF to the AGC in the RF-B60.
Perfect results on both transmissions, no more small dips on the afternoon transmissions since a couple of days :)
Simone
After perfect results the past days, the problem with the small dips was back today, occuring on both transmissions :(
FritzWue
27-05-2009, 13:46
Muenster North-A1-A43-Nottuln
Pretty good this morning, small dips this afternoon.
Simone
There was no signal on the first transmission, good results with a few of these small dropouts this afternoon.
Simone
Good results on both transmissions.
Simone
Almost perfect on both transmissions today.
Simone
Two dropouts at the end of the first hour, perfect results later.
Simone
A late log start here. Last 45 Min. with perfect result!
Good results yesterday.
Simone
Almost perfect results on both transmissions today.
Simone
Two dropouts this morning, almost perfect this afternoon.
Simone
FritzWue
03-06-2009, 20:35
Muenster North-A1-A43-Nottuln
Obviously two feed failures, as first the leaking driver signal came back and then the amplifier switched on. After the end of the transmission the leaking driver signal is visible even in the car.
Not as good as usual on the first transmission, almost perfect this afternoon.
Simone
FritzWue
04-06-2009, 19:37
Buende-A30-Schuettorf
A few problems today (on both transmissions).
Simone
A problem at the beginning of the first transmission, then perfect. Lots of small dips on the second transmission.
Simone
Quite a few small dropouts during both hours.
Simone
A deep dip on the first transmission, the usual small ones in the afternoon.
Simone
Some dropouts today on both transmissions.
Simone
Perfect results on the first transmission, some small dips and a problem at 1550 this afternoon.
Simone
Started a bit weaker than usual on the first transmission, almost perfect this afternoon.
Simone
Not as good and stable as usual.
Simone
Much better again today, reliable as it used to be with a stronger signal giving perfect results on both transmissions :)
Simone
Not so good today especially bigger dropouts from 1428-1448.
Simone
Better conditions today, but Tx problems on both transmissions :(
Simone
Unstable signal this morning, somewhat better in the afternoon, not as reliable as it used to be.
Simone
Good conditions today, good results with only a few minor dropouts.
Simone
Only a short log to check the equipment. Seems to work OK.
Not as stable as it used to be, but still almost perfect decoding.
Simone
Almost perfect on both transmissions today.
Simone
Perfect results, but something went wrong and no data was logged in the TXT file... so everything I can tell you that max. SNR was about 30 dB and I did not hear any drop-outs.
Perfect results this afternoon here too, a few minor dropouts on the first transmission.
Simone
Some problems on the first transmission.
Simone
Again problems on the first transmission, almost perfect on the second one.
Simone
A few dropouts in the first half hour, stronger signal and perfect results in the second hour.
Simone
Quite good on both transmissions today.
Simone
Almost perfect during both transmissions today.
Simone
A few minor dropouts on the first transmission, better this afternoon.
Simone
Again better results on the second transmission.
Simone
Excellent results apart from the (Tx?)-problem at 1510.
Simone
A few small dips on the first transmissions, almost perfect results this afternoon.
Simone
Perfect on the first transmission, small dips on the second one.
Simone
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