[A-DX] Fw: DRM from Brazil Is Back

Wolfgang Bueschel
Mi Dez 2 22:45:53 CET 2020

BRASILIEN   DRM aus Brasilien Experimentierfunk sendet jetzt
den digitalen Block 30 kHz höher.
Grosser Dank den Brasilianern, die haben schnell auf die
Interferenzvorhaltungen reagiert
und haben RauL's RHC Afrika Frequenz 11880 kHz 21-23 UT geräumt.

2100-2130 11880 BAU 100  100 SoAf French     Africa ex7380
2130-2200 11880 BAU 100  100 SoAf Portuguese Africa ex7380
2200-2300 11880 BAU 100  100 SoAf English    Africa ex7380
antenna Bauta #3, HRS4/4/0.8, 130degr minus 30degr slewed

check mal die 11910 kHz in DRM mode decoding,
müsste doch in Sao Paulo auch gehen.

Die Europäer mit DRM Decoding Museumszeux können ja auch mal testen.
Weiss nicht ob der cross Atlantic Pfad auch ein gutes Signal ergibt.

Um 20.41 UT DRM 11910 kHz S=9+15dB in Edmonton, S=9 -74dBm in Michigan,
S=7 -91dBm in Texas,
manchmal klappt decodierung SNR = 11.5 dB,
andere US Anlagen liefern nur kläglich SNR 4.1 oder 2.9

ID "Brasil DRM Experiment EEP Data 14.06 kbps"

73 wb

----- Original Message ----- 
From: "Glenn Hauser via groups.io" <wghauser=>
Sent: Wednesday, December 02, 2020 9:20 PM
Subject: Re: [WOR] DRM from Brazil Is Back

I went back to Brasilia SDR --- how far is it really from the Rodeador site?

At 1924, some music is being heard at S9+15 and not // talk on 11780-AM,

DRM reads 14.06 kbps, 11.5 db SNR, mode B. Nothing but music about 50% of
the time but keeps going into oscillation, dropping to silence and coming
back as if nothing happened. The signal is not fading much if any at local

At the bottom of the box there is a rotation of 3 or 4 one-line texts, about
samba, drogas,, weather in Sao Paulo.

At 1945 the SNR is 18.5 dB, but still same in & out music.

DRM sked menu still shows 11880.

1956, SNR is 22.4 dB, S9+35, same in & out music only.

Sent: Wednesday, December 02, 2020 8:04 PM
Subject: Re: [WOR] DRM from Brazil Is Back
>From 1830, No signal here, but weak at Brasilia SDR, better at Bonaire SDR,
S5-S6, solid H2Ofall block 11905-11915 but not audible except occl bursts of

Nothing else heard, but Aoki/NDXC shows:
11910 1200-1300 CHN CHINA RADIO INTERNATIONA Amo Beijing 572 1-7
11910 1300-1357 CHN CHINA RADIO INTERNATIONA Eng Beijing 572 1-7
11910 2055-2400 J NHK WORLD RADIO JAPAN Jap Ibaragi-Kog 1-7
11910 1400-1500 THA * VOICE OF AMERICA Tib Udon Thani 1-7
11910 1800-1857 KRE Voice of Korea Fre Kujang 1-7
11910 1900-1957 KRE Voice of Korea Eng Kujang 1-7
11910 2000-2050 KRE Voice of Korea (KCBS) Kor Kujang 1-7

On Wednesday, December 2, 2020, 07:04:57 PM GMT+1, Richard Langley
<> wrote:
As just posted in the DRMNA io group:

"Per Brother Francisco via Twitter:
'EBC & Brasília University tests 11910 kHz DRM on air now! 16-QAM MSC,
Mode A, AAC + SBR. #drmlog'" -- Richard Langley