Join Date: Feb 2015
Location: East Lancashire, north west England
Mystery DRM Signal on 3260 kHz
Jordan Heyburn in Northern Ireland reported the following signal on the World of Radio mailing list, and I can hear it here as well, though not strong enough for a lock as yet. Someone on the list suggested that North Korea may be a suspect as they were supposed to have tested this mode. Maybe some of you will have more luck with getting an ID and can give Jordan an answer?
Jordan's original post:
"I am copying a DRM transmission on 3260kHz however it's too weak to get a lock. Any ideas?
0150 UTC Perseus SDR - Beverage (Japan wire) - Remote QTH Finland
On the other wires (SEA & Southern) the DRM signal is dramatically decreased.
Modified NRD-525G with
Radiokit DRM Decoder Board,
Airspy HF+ Discovery
SDR Console v3
Join Date: Aug 2006
Location: BaiSe, P.R. China @E106°36′ N23°55′
Got it via KiwiSDR.
Unstable signal with wildly variable field strength. It seems generated from a good quality Tx station. I have the suspicion the encoded bit stream is purposely scrambled to prevent outsider from deciphering it (That is why DreaM can NOT display any useful/meaningful Info.). Also the center DC freq is quite odd (3262Khz).
Any kind of audio drop-out is worse than any kind of low quality audio: No audio, No log report.
My Rx location: GuangXi Province @ E106°36′ N23°55′
Join Date: Mar 2010
Location: Northeast France
I have this signal S9 of my S/Meters and SNR 7 to 9 db.
This signal and the mention CELT in the audio Codec remind me the same signal as on 4770 kHz with DRM A service!!!!! I think that it is the same station.
Mixer Platine MF9 Mhz with Dream
Mantova Turbo 5/8 wave for 27 mhz
Long Wire 80 meter
|Thread Tools||Search this Thread|