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Old 25-08-2018, 19:40   #1
f1tay
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Unknow 4770 kHz

Fort signal DRM sur 4770 kHz à 18h15.
Indication :
DRM SERVICE A

Pas d'audio juste du data.
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Old 25-08-2018, 21:20   #2
AF4MP
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KiwiSDR direction finding via TDoA puts the transmitter somewhere in the Alps of SE Switzerland near the border of NW Italy at approximately 46.35 deg N, 9.70 deg E.
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File Type: png 4770 QTH.png (87.8 KB, 86 views)
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Old 25-08-2018, 22:02   #3
MARCEL
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Yes I receive signal of S/meter S9+20 db no audio, SODIRA audio codec CELT !!! :

https://nsa39.casimages.com/img/2018...5001555890.jpg

https://nsa39.casimages.com/img/2018...5034388289.jpg
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Old 26-08-2018, 01:37   #4
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Noted, via a KiwiSDR near Wilhelmshaven, running some sort of data service using half the channel at 00:05 UTC, 2018/08/26.

Cheers, Chris
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File Type: jpg 201808260005.jpg (86.2 KB, 65 views)
File Type: png 4770-180826-0002-0029-Owdjim.png (38.4 KB, 56 views)
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Elad FDM-DUOr, KiwiSDR, FRG-100/DRM receivers + Wellbrook ALA1530S+ loop antenna
http://www.owdjim.gen.nz/chris/radio/DRM/ http://kiwisdr.owdjim.gen.nz:8073

Last edited by Owdjim : 26-08-2018 at 02:02.
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Old 26-08-2018, 03:00   #5
AF4MP
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Quote:
Originally Posted by Owdjim
Noted, via a KiwiSDR near Wilhelmshaven, running some sort of data service using half the channel at 00:05 UTC

Interesting, 'cos at the time I was trying to DF the signal the spectrum looked like normal 10 kHz DRM.

Marcel's SODIRA scan also shows a normal type DRM signal but perhaps 9 kHz or a little less wide.
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Last edited by AF4MP : 26-08-2018 at 03:03. Reason: added "but perhaps 9 kHz or a little less wide"
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Old 26-08-2018, 03:10   #6
AF4MP
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In fact Marcel's screen ID does show B/10 kHz as the Mode/Bandwidth (see attachment).
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File Type: png 4770 BW.png (87.6 KB, 69 views)
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Old 26-08-2018, 03:15   #7
Owdjim
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They were 10 kHz bw until 00:00 UTC, then 5 kHz.

Also noted on KiwiSDRs in Sardinia & Ireland.

Cheers, Chris
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File Type: png 4770-180826-0043-0052-Owdjim.png (36.0 KB, 54 views)
File Type: png 4770-180826-0105-0124-Owdjim.png (38.8 KB, 42 views)
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http://www.owdjim.gen.nz/chris/radio/DRM/ http://kiwisdr.owdjim.gen.nz:8073

Last edited by Owdjim : 26-08-2018 at 03:20.
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Old 26-08-2018, 03:27   #8
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Although the KiwiSDR TDoA shows the transmitter location as Switzerland, the Principality of Liechtenstein is only 30 or so kilometers to the north and close enough to the DF circles, to make that country host to the transmitter site!

Vaduz, the capital of Liechtenstein, is known as a big financial center is only 80 km from the DF'd location.
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Old 26-08-2018, 15:44   #9
f1tay
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Quote:
Originally Posted by AF4MP
KiwiSDR direction finding via TDoA puts the transmitter somewhere in the Alps of SE Switzerland near the border of NW Italy at approximately 46.35 deg N, 9.70 deg E.

Peut être Berne Radio à Prangins 46°24'24" N 6°15'4" E ?

Daniel
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Old 26-08-2018, 15:56   #10
f1tay
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D'après ce site : http://www.utilityradio.com/stations...sui/sui-63.htm
Bern Radio utilisait en télétype la fréquence de 4764,7 kHz soit à -5 kHz de 4770 kHz..
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Old 26-08-2018, 21:01   #11
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Aug_26

I got a label on 4770kHz from Kuwait.
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Old 27-08-2018, 17:41   #12
MARCEL
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16H10 UTC I have DRM signal of 4770 Khz.
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Mixer Platine MF9 Mhz with Dream

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Mantova Turbo 5/8 wave for 27 mhz
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Old 27-08-2018, 19:55   #13
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Unknow 4770 kHz

Signal also visible here but no chance to decode it. Very interesting is only 5 kHz is sending out...
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Regards from Elbflorenz,Saxony
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Old 27-08-2018, 20:08   #14
DRM Hdn
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Unknow 4770 kHz

see the attachments
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File Type: png 4770kHz-1.png (68.3 KB, 65 views)
File Type: png 4770kHz-2.png (53.2 KB, 63 views)
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Regards from Elbflorenz,Saxony
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Old 27-08-2018, 20:26   #15
MARCEL
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Hallo Hdn,

Alles wie bei mir.

https://nsa39.casimages.com/img/2018...1510381188.jpg
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