Stern Radio 6966.5 AM 1853 UTC 14 APR 2025

[osiris]

Solid sig here.

Sig: -23 dBFS
SIO: 454
Ant: G5RV
Rec: AirSpy Discovery

1855: Residue - Kerry King
1856: OM speaking
1857: Territory - Sepultura

[sternradio666]

I'm doing a new innovation on this transmission.  Doing an AM stereo signal that is compatible with both Kahn ISB AM Stereo AND C-QUAM.  It's a hybrid of the two systems. Either detector on the KiwiSDRs seem to manage to decode it just fine, the CQUAM decoder still suffers more from its typical platform effect.

Of course, I'm going to ram some heavy metal through it! 

[J. Carlos Pérez Montero]

Broadcaster: Sternradio
Listening date: 14 April 2025
Listening time: 19:15 to 20:00 UTC time
Frequency: 6966.5 QAM
SINPO: 55544
Listening Location: Valladolid (Spain) via kiwiSDR Cape May County, NJ (USA)
Receiver used: kiwiSDR Cape May County, NJ (USA)
Antenna used: Active Low Noise HF
Details of the programme listened to:
1915 UTC “Greed Killing” (Napalm Death)
1918 "Satanized" (Ghost)
1922 "Fantasie, No. 3, A-Moll, Op. 51" (Martin Rost)
1923 "The Ritual" (Testament)
1931 "God Luck and Good Speed" (Weedeater)
1935 "On and On" (Raven)
1939 "I Hate" (Overkill)
1944 "Blood Red Skies" (Judas Priest)
1951 "Inri" (Satyricon)

For more information on my listening, listen to the audio on Dropbox: https://www.dropbox.com/scl/fi/wsys901p73jij8ddjzogx/Sternradio-6966.5-QAM-1915-2000-UTC-14-4-2025.mp3?rlkey=0slcp378u02i167p0okr5sabk&st=fdc621fa&dl=0

I would be grateful to receive your eQSL at: laradioymuchomas@gmail.com

Thank you for your show.

[Ct Yankee]

Good reception, some fades

1918 "Greed Killing" Napalm Death

[Radio Star]

S5 a bit weak but it will get better!
1918 - "Satanized" - Ghost

[Radiouser]

1928 "The Ritual" by Testament.
1930 ID by YL.
1931 "God Luck and Good Speed" by Weedeater.
1935 OM in English and YL in German with "please standby, Sternradio is having technical difficulties, transmitter is smoking, smoking will kill you" into "On and On" by Raven.
1939 "I Hate" by Overkill.
1944 "Blood Red Skies" by Judas Priest.
1951 "Inri" by Satyricon.
1956 "De Mystertiis Dom Sathanas" by Mayhem.
1959 "Der Rutenmarsch" by Belphegor.
2004 "Completely F****d" by GWAR.
2009 ID and email.
2010 "The Drapery Falls" by Opeth.
2020 ID by YL into "Do Not Look Down" by Meshuggah.
2025 "Oroborus" by GOJIRA.
2034 "Of Dream and Drama (Midnight Ride)" by Moonspell.
2038 "Abigail (Live)" by King Diamond.
2040 "The Satanist" by Behemoth.
2045 "Destroyer" by Gorgoroth.
2049 "Into the Infinity of Thoughts" by Emperor.
2058 ID and email.
2059 "The Great Seal" by Laibach.
2103 Churchill speech:

We shall fight on the seas and oceans,
We shall fight with growing confidence and growing strength in the air, we shall defend our Island, whatever the cost may be,
We shall fight on the beaches,
We shall fight on the landing grounds,
We shall fight in the fields and in the streets,
We shall fight in the hills;
We shall never surrender.
2104 OTA.

Thanks for today's show.

[dxwingr]

1935utc SIO333  a little noise

Music

[myteaquinn]

1940: I Hate by Overkill. S7 with some noise.
1956: De Mystertiis Dom Sathanas by Mayhem.

[Sarge94]

1957 - De Mysteriis Dom Sathanas - Mayhem                 S9
1959 - Der Rutenmarsch - Belphegor
2059 - The Great Seal - Laibach

[ChrisSmolinski]

2001 Just tuned in, the usual strong signal from Sternradio.
2052 Still a great signal.

Sternradio: I posted a screenshot of your waterfall ID on the HFU Facebook group, and it's garnered a lot of interest - both views and comments!

[sternradio666]

2001 Just tuned in, the usual strong signal from Sternradio.

Thanks for keeping the lights on at HFU Chris!  I scribbled an hour long STERNRADIO again on the waterfall today for the daily screenshot.

Has anyone else giving the stereo stuff a try?  Both CQUAM and SAS modes on KiwiSDRs seem to sound identical to me when it comes to L vs R separation, which is what I was hoping for.

[Charlie_Dont_Surf]

Both CQUAM and SAS modes on KiwiSDRs seem to sound identical to me when it comes to L vs R separation, which is what I was hoping for.

Yeah, they seem the same to me. You could do an over the air (OTA) test: 15 seconds of single-tone left+right, then the same but left only, then the same of right only, to judge the separation.

Also noticed you are on 6966.666, because....well, you know.

2104 - TX off.

[Andrew Yoder]

Excellent signal. Need to go mow, but wanna try the stereo on SDR to see how it sounds

<moments later> Oh well, guess it signed off in the couple of minutes between the time that I tuned in, ran to the computer & logged it, and checked an online SDR

[sternradio666]

Both CQUAM and SAS modes on KiwiSDRs seem to sound identical to me when it comes to L vs R separation, which is what I was hoping for.

Yeah, they seem the same to me. You could do an over the air (OTA) test: 15 seconds of single-tone left+right, then the same but left only, then the same of right only, to judge the separation.

Also noticed you are on 6966.666, because....well, you know.

2104 - TX off.

Thanks for the report and noticing...the proper frequency!

I did do drop outs like that a few times with either channel.  The effects on the waterfall, those were OBVIOUS!   Here is the with the CQUAM decoder, if I HARD drop a channel, and this is a flaw of CQUAM, as it fades down it'll eventually POP into a mono signal!  That's one of those things you can't really *fix* about it.  Just the nature of the math behind it.  Most content isn't quite that...STEREO.   The SAS/ISB Stereo decoders handle the situation as you'd expect and just left the weak channel disappear and that's OBVIOUS with the cans on