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Old 23-08-2005, 18:36   #16
simone
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Hi all,
same situation here, thats what the SNR spectrum looks like.
73, Simone
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Old 23-08-2005, 18:52   #17
FritzWue
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Thanks to Klaus' messages I was able to receive the last minutes with the shielded loop antenna at my location at the dutch border.
A strong signal with a lot of interference.
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Old 23-08-2005, 18:53   #18
Andreas
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Hi !

And here is my very first log of 177 kHz.

SNR is not quite high, although my QTH is near to the Tx - most probably this is caused not by low S but by high N around, including noise caused by my computer.

Best reception during last minutes before the sudden end was achieved by turning the ferrite rod thus Europe 1 was nearly nulled out.

Andreas
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Old 23-08-2005, 19:22   #19
FritzWue
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Some screenshots with more details.
At my location Berlin and Saarlouis are about 90 apart, so very good efficiency of the loop antenna.
As Carsten said this is a very bad frequency allocation, even if they want to transmit a megawatt in the future:
http://telefunken-sender.de/News_Pre...u__lw-ant.html
If they want to demonstrate this during the IFA the sound quality should be enhanced!!!
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Old 23-08-2005, 20:21   #20
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TX location 16515 Zehlendorf:
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Old 29-08-2005, 08:45   #21
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Hi all,
LW 177 kHz switched over to DRM at 07:56 UT this morning, unfortunately with a carrier (like Ismaning on 6085 kHz).
Good audio quality now.
A 2nd channel tells the history of Deutschlandradio in HVXC with 2.4 kbps.

73, Klaus
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Old 29-08-2005, 14:10   #22
Paul Widger
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Receiving 177 Khz here in Huddersfield N,England.
A few dropouts but generally quite good,maybe it
will improve at night.
Using two loops,the second loop cancels 183khz.
Is the carrier necessary?
Could hear the old AM reasonably,more noise
but no dropouts.

Paul.
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Old 29-08-2005, 15:52   #23
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Hi,

quite stable with the loop minimized towards 183 kHz. With
other antennas no decoding.

Bernd, DF9RB
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Old 29-08-2005, 18:26   #24
FritzWue
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With the loop antenna's minimum to Saarlouis no problems here in the afternoon and early evening. Good audio quality!
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Old 29-08-2005, 19:47   #25
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Thumbs up

I did not really expect problems at my location and there were none.

Europe 1 is at right angle to Oranienburg from here and the Tx could always be heard with a SINPO of near to 55555 (on my dear old Grundig Satellit 650)

The big drop at 18:40 was the fully unsuccessful attempt to receive a signal with the whip antenna, the other one - I don't know.

However the small adjustable ferrite rod mounted to my indoor antenna worked quite well.

And yes indeed: sound quality is near to FM.

73, Andreas

"It's a small step for DRM but a big step for long wave"
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Old 29-08-2005, 19:51   #26
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Hi all,

Listening to some nice classical music from
177 kHz just now, great audio quality. Picking up the second channel as well.
Had to turn the ALA 1530 to null out 183 kHz. A bit of a "battle" with 168 kHz as well but Oranienburg is winning at the moment....
Will send in my log later tonight.
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Old 29-08-2005, 20:56   #27
dk8cb
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Problems in Munich

A very low SNR on the ferrite antenna here in Munich, much too low for audio. 183 kHz cannot be nulled sufficiently such that there is still enough signal from DLF.

Guess, I will have to put up a longwave loop in addition to my already existing mediumwave loop.

Roland
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Old 29-08-2005, 21:16   #28
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Beginning problems at sunset, quite difficult at night in South East Gemany but in Mode A only a few drop outs even with 7 dB SNR. The DRT1 is also a little better than the TS850 under this conditions (1st graph in log).

Bernd, DF9RB
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Old 29-08-2005, 22:25   #29
FritzWue
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When I stopped the log this evening and saw the SNR was going down I started again.
Main reason for the decreasing SNR at my location obviously is TRT on 180kHz. I can't do anything about it. When I try to null Turkey then Europe1 on 183kHz is by far too strong here.
Nevertheless audio is remarkably good down to 15dB SNR with 21kbps!
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File Type: png 177_050829__dk6qi.png (42.4 KB, 279 views)
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Old 29-08-2005, 22:27   #30
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Hi all,

Here is my results for tonight. Not too bad but as Carsten said this is a bad frequency.
I had a few bad dropouts caused by adjacent channel interference from 168 kHz.
It just shows the potental of DRM on long wave band.
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File Type: zip 177_050829_markt.zip (83.7 KB, 280 views)
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