Loggings > North American Shortwave Pirate
Sternradio 6974.6 was 6970.6 AM 0202 UTC 10 May 2025
Andrew Yoder:
Excellent signal with modern metal, etc. Because of the reminder about stereo broadcasting, I turned down the volume on my R8 & started checking KIWI SDRs. Listening now online in stereo on headphones. Very nice. I haven't listened to much stereo shortwave, just X-FM prior to this, and I'm wondering if some of the cross-channel fades might be caused by propagation and not by the stereo mix
sternradio666:
--- Quote from: Andrew Yoder on May 10, 2025, 0309 UTC ---Excellent signal with modern metal, etc. Because of the reminder about stereo broadcasting, I turned down the volume on my R8 & started checking KIWI SDRs. Listening now online in stereo on headphones. Very nice. I haven't listened to much stereo shortwave, just X-FM prior to this, and I'm wondering if some of the cross-channel fades might be caused by propagation and not by the stereo mix
--- End quote ---
It's an ISB compatible system. I can drop a channel for a moment or three!
Charlie_Dont_Surf:
--- Quote from: sternradio666 on May 10, 2025, 0310 UTC ---It's an ISB compatible system. I can drop a channel for a moment or three!
--- End quote ---
Yes, that's the only way that you would be able to do this. (That is, to have different "art" on the LSB than there is on the USB.)
0430 - Black Sabbath, very listenable on a midwest SDR, SINPO 44334. Not listenable at home on the left coast; I can clearly see the carrier on the waterfall but it's not strong enough for the necessary SNR.
0441 - ID and email address. Sign off music.
0446 - Checked back and they are gone.
--- Quote from: sternradio666 on May 10, 2025, 0310 UTC ---The magic is getting the mix right for such that an envelope detector doesn't shit it pants! There have been times where my phase relationships were all sorts of fucked and ISB stereo detectors could RX just fine, but regular AM receivers couldn't make out squat. It's more like old time Ma Bell frequency division multiplexing with sub-carriers going on! Maybe! :D
--- End quote ---
Oh, I see. Are you generating the artwork at audible frequencies and mixing it up to ~10 KHz or whatever? Or are you synthesizing the whole thing?
sternradio666:
--- Quote from: Charlie_Dont_Surf on May 10, 2025, 0347 UTC ---
--- Quote from: sternradio666 on May 10, 2025, 0310 UTC ---It's an ISB compatible system. I can drop a channel for a moment or three!
--- End quote ---
Yes, that's the only way that you would be able to do this. (That is, to have different "art" on the LSB than there is on the USB.)
--- End quote ---
The magic is getting the mix right for such that an envelope detector doesn't shit it pants! There have been times where my phase relationships were all sorts of fucked and ISB stereo detectors could RX just fine, but regular AM receivers couldn't make out squat. It's more like old time Ma Bell frequency division multiplexing with sub-carriers going on! Maybe! :D
Professor:
0409 Excellent S9+20 signal here tonight. Thanks.
0438 "K-Pax" by Kirlian Camera
0442 OM providing email address for QSLs. Playing their traditional sign-off song, "The Great Seal" by Laibach.
0446 Churchill speech and then OTA.
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