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2750KHz odd sound
http://www.lazygranch.com/sound/shortwave/2750khz.ogg
SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter |
2750KHz odd sound
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2750KHz odd sound
On Mar 22, 3:10 pm, Telamon
wrote: In article , wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter What is the file format? -- Telamon Ventura, California Ogg. It plays in winamp, irfanview, videolan. |
2750KHz odd sound
On Mar 22, 2:55 pm, wrote:
http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter A few days ago they were doing what I call "ding dong whoop." Then 2 second beep, 4 seconds off. I didn't record those events. |
2750KHz odd sound
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2750KHz odd sound
On Mar 22, 6:08 pm, msg wrote:
wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter Hmm, your original post never arrived at Supernews. Interesting; sounds like some sort of channel calibration/equalization/training. What were your receiver settings (mode, filter widths, processing)? When I first began listening, my impression was of out-of-band interference from a paging transmitter or trunking public service repeater slowed _way_ down. Michael I already stated the receiver was in AM mode using the 9.5Khz bandwidth. No processing. |
2750KHz odd sound
On Mar 22, 4:02 pm, Mats Peterson wrote:
wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter Trying to advocate the use of Ogg Vorbis are we? Just kidding. -- Mats I've been uploading audio in ogg for years. http://www.lazygranch.com/red_audio.htm http://www.lazygranch.com/janet_audio.htm While not much of an advantage for mono, ogg is very useful for stereo scanner recording. That is, you record two scanners in real time. MP3 will share the audio between channels, while ogg behaves as if each channel is discrete. I try to use open source standards where possible, i.e. LAME or Ogg versus mp3. FLAC versus whatever crap Apple is pushing lately. |
2750KHz odd sound
wrote:
http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter Hmm, your original post never arrived at Supernews. Interesting; sounds like some sort of channel calibration/equalization/training. What were your receiver settings (mode, filter widths, processing)? When I first began listening, my impression was of out-of-band interference from a paging transmitter or trunking public service repeater slowed _way_ down. Michael |
2750KHz odd sound
wrote:
On Mar 22, 6:08 pm, msg wrote: wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter Hmm, your original post never arrived at Supernews. Interesting; sounds like some sort of channel calibration/equalization/training. What were your receiver settings (mode, filter widths, processing)? When I first began listening, my impression was of out-of-band interference from a paging transmitter or trunking public service repeater slowed _way_ down. Michael I already stated the receiver was in AM mode using the 9.5Khz bandwidth. No processing. Yes, but I don't have your original post ;) Michael |
2750KHz odd sound
wrote:
On Mar 22, 6:08 pm, msg wrote: wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter Hmm, your original post never arrived at Supernews. Interesting; sounds like some sort of channel calibration/equalization/training. What were your receiver settings (mode, filter widths, processing)? When I first began listening, my impression was of out-of-band interference from a paging transmitter or trunking public service repeater slowed _way_ down. Michael I already stated the receiver was in AM mode using the 9.5Khz bandwidth. No processing. Sorry, in the clutter of quoted material and since I was distracted by the lack of the original post, I simply missed that. Michael |
2750KHz odd sound
On Mar 22, 5:45 pm, Telamon
wrote: In article , wrote: On Mar 22, 3:10 pm, Telamon wrote: In article , wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter What is the file format? Ogg. It plays in winamp, irfanview, videolan. I down loaded the free videolan player. Nice app. I think someone is testing a transmitter. It just sounds to me to be a series of tones low to high and at one point a tone ramp. If I'm awake at 2 AM I'll give it a listen. -- Telamon Ventura, California That is my guess too. The signal itself doesn't sound "informative", i.e. no modulation. The allocation for that frequency isn't all that strict(fixed, mobile, some aero), but given the power and consistency, it is fixed. |
2750KHz odd sound
In article
, wrote: On Mar 22, 5:45 pm, Telamon wrote: In article , wrote: On Mar 22, 3:10 pm, Telamon wrote: In article , wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter What is the file format? Ogg. It plays in winamp, irfanview, videolan. I down loaded the free videolan player. Nice app. I think someone is testing a transmitter. It just sounds to me to be a series of tones low to high and at one point a tone ramp. If I'm awake at 2 AM I'll give it a listen. That is my guess too. The signal itself doesn't sound "informative", i.e. no modulation. The allocation for that frequency isn't all that strict(fixed, mobile, some aero), but given the power and consistency, it is fixed. The series of tones and tone ramp could be a test of the transmitter modulation capabilities. -- Telamon Ventura, California |
2750KHz odd sound
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2750KHz odd sound
On Mar 22, 2:55*pm, wrote:
http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter M...Sushi, Tuned 2750 kHz @ 0:749~07:52 UTC Sounds like Garbled Voice in AM LSB sound was weaker. USB almost could understand the {Male?} Voice. Tuned up and down the Band 1000 Hz in both AM and USB with no better results. At 07:52 UTC the Signal was gone. ~ RHF |
2750KHz odd sound
In message
, Telamon writes In article , wrote: On Mar 22, 5:45 pm, Telamon wrote: In article , wrote: On Mar 22, 3:10 pm, Telamon wrote: In article , wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter What is the file format? Ogg. It plays in winamp, irfanview, videolan. I down loaded the free videolan player. Nice app. I think someone is testing a transmitter. It just sounds to me to be a series of tones low to high and at one point a tone ramp. If I'm awake at 2 AM I'll give it a listen. That is my guess too. The signal itself doesn't sound "informative", i.e. no modulation. The allocation for that frequency isn't all that strict(fixed, mobile, some aero), but given the power and consistency, it is fixed. The series of tones and tone ramp could be a test of the transmitter modulation capabilities. Second harmonic of MW transmitter (either transmitted, or generated in your receiver)? -- Ian |
2750KHz odd sound
wrote:
On Mar 22, 2:55 pm, wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter A few days ago they were doing what I call "ding dong whoop." Then 2 second beep, 4 seconds off. I didn't record those events. What do you hear now? At about 0200Z 03-27-2008 I am hearing a steady slow male reader in a language that sounds a bit like Spanish (but I can't make it out for the noise level). Mode is USB, QTH No. MN. Michael |
2750KHz odd sound
Sounds like HAARP.
wrote in message ... On Mar 22, 3:10 pm, Telamon wrote: In article , wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter What is the file format? -- Telamon Ventura, California Ogg. It plays in winamp, irfanview, videolan. |
2750KHz odd sound
On Mar 26, 7:03*pm, msg wrote:
wrote: On Mar 22, 2:55 pm, wrote: http://www.lazygranch.com/sound/shortwave/2750khz.ogg SF Bay area approx 9GMT 3/22/2008 2750Khz AM 9.5kHz filter A few days ago they were doing what I call "ding dong whoop." Then 2 second beep, 4 seconds off. I didn't record those events. - What do you hear now? At *about 0200Z 03-27-2008 - I am hearing a steady slow male reader in a language - that sounds a bit like Spanish (but I can't make it out - for the noise level). Mode is USB, QTH No. MN. - - Michael - MSG - That was sort of my general impression. ~ RHF http://groups.google.com/group/rec.r...70fb7bbf3b9923 |
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