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VLF interesting info discovery!

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  • soozieqty1
    In digging into VLF receivers and related info I found an interesting possible correlation to hum hearing, weather and earth changes. I did not thoroughly read
    Message 1 of 6 , Feb 28, 2013
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      In digging into VLF receivers and related info I found an interesting possible correlation to hum hearing, weather and earth changes. I did not thoroughly read each page and am not certain if this info is applicable to Glens work but I am throwing it on the table for all to read. Here's what I found:
      Exerpt from the web pages listed above the blurb.

      http://www.auroralchorus.com/wr3gde.htm
      POCKET-PORTABLE WR-3 NATURAL-VLF-RADIO PHENOMENA RECEIVER LISTENING GUIDE, By Stephen Paul McGreevy

      This Listening Guide was first begun in mid-1991 and recently updated again May 2010)

      Welcome to the realm of extreme and very-low-frequency (ELF/VLF) "Natural Radio!" The WR-3 is an electric-field ("E-field") type of "whistler receiver" specifically designed to monitor naturally-occurring VLF radio emissions of Earth that occur in the 300-11,000 cycles-per-second (0.3-11 kHz) audio-frequency ELF/VLF radio spectrum. It employs a telescoping whip antenna (BNC-mount) to receive VLF signals and requires stereo-mini headphones to be plugged into its output for listening.

      Earth-along with several other planets in the Solar System including Venus, Jupiter, Saturn, Uranus and Neptune - produces a variety of naturally occurring radio emissions at the lowest end of the radio spectrum (< 10 kHz), primarily in the form of electromagnetic (radio) impulses generated by ongoing lightning storms and also from the Sun's solar wind interacting with the magnetic envelope surrounding Earth, called the "magnetosphere." A large variety of unusual and beautiful Natural Radio sounds can be heard at ELF/VLF frequencies. These naturally-occurring radio signals are the subjects of ongoing scientific research by both amateur and professional groups, and are being monitored both on the ground by users of the WR-3, other ground-based VLF receiver systems, and by unmanned space probes and satellites.

      It is at these lowest frequencies of the radio spectrum in which no man-made signals are assigned, that planet Earth's own mysterious radio emissions have been happening for eons. These fascinating "sounds" are "primal radio"-indifferent to the affairs of humankind-and insight into the causes of these ancient phenomena has only begun to be unraveled in the past 50 years, particularly commencing with the International Geophysical Year beginning in 1957.

      WHEN TO LISTEN FOR NATURAL RADIO PHENOMENA AND WHERE IN THE WORLD THEY OCCUR:
      (Much of the information following should be used concurrently with the above sources of geo-magnetic information for best listening results.)

      Statistically, the time between local midnight and an hour after sunrise is when the greatest amounts of whistlers are heard, although dusk to midnight may reveal substantial whistler activity, and even (though not very often) loud whistlers may be heard a couple of hours before sunset. Over the long term, the period from two hours before sunrise until an hour after sunrise is the optimum time to listen for natural VLF phenomena of all sorts, as the amount of sferics (lightning stroke pops and crackling) are less -- natural VLF radio phenomena are not as "buried" under the sferics as in the evening when lightning storms are more numerous. Also, magnetospheric conditions are optimum around morning twilight time and an hour before for best whistler listening.

      Interestingly, between April 1996 and March 1997, I had been hearing good whistler events during the DAYTIME and particularly late afternoon before sunset! Many times, these whistler events die out after sunset and are not heard at sunrise. But, after that through December 1997, whistlers were once again more frequently heard between 2 - 6 a.m. local time.

      http://www.hard-core-dx.com/nordicdx/antenna/special/vlfactive.html

      http://users.tpg.com.au/users/ldbutler/VLF-LFLoopAerial.htm

      http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790011925_1979011925.pdf

      http://forums.qrz.com/showthread.php?186839-SWEDISH-VERY-LOW-FREQUENCY-(VLF)-TEST-TRANSMISSION-ON-17-2-kHz/page2
      I have no serious power line noise problem on VLF (0 to 22 KHz on the SM6LKM SAQ downloaded VLF receiver on http://web.telia.com/~u33233109/saqrx/saqrx.html

      There is also no power line noise problem on the Kenwood TS480HX which receives between 20 kHz to 30 kHz. I use the 10 kHz clarifier to listen below 30 kHz.

      http://www.herostechnology.co.uk/pages/VLF_LF_Converter.html

      http://www.cliftonlaboratories.com/jackson_harbor_press_vlf_converter.htm

      http://www.radio-ware.com/products/pla1.htm

      http://www.stormwise.com/vlfaq.htm
      Like shortwave radio, VLF can be reflected from the upper atmosphere. But what happens when the waves become too big to fit? Does the upper atmosphere expand to allow the waves room pass thru? No! There is a point in frequency where radio waves get too big to fit between the 35 to 60 miles space between the earth and the upper atmosphere. This point is 1600 Hz (click to listen). These radio waves are so low in frequency that you can actually hear them with your ears, when they are transformed into sound waves by a speaker. Radio waves below 1600 Hz can not travel too far beyond 60 miles.

      Waves below 1600 Hz can travel by conduction through the earth itself. The earth's surface and underground area is very large and the waves below 1600 Hz have plenty of room to travel underground. Frequencies below 1000 Hz are used for earthquake research and other scientific studies. Lightning static drops out very quickly below 1600 Hz.

      Voice and musical sounds of 20 Hz through 20 KHz, can be transformed into VLF radio waves when detected by a microphone. A tape recorder works by recording the VLF waves onto a magnetic cassette tape. During playback, a sensor detects the VLF radio waves from the tape as it is pulled past the sensor. An amplifier boosts the VLF radio waves and sends them to the speaker. The speaker vibrates and produces the sounds that you hear!

      AM and FM radio broadcasts are actually carrying voice and music frequencies - 20 Hz to 20 KHz, this is VLF being carried through the air on much higher-frequency radio wave, but it is not VLF until it flows as electrical current to your radio's speakers.

      http://www.w6ze.org/Heathkit/Heathkit_016_HD1420.pdf

      http://martykaiser.com/vlf59-10~1.htm

      http://k1el.tripod.com/VLF.html

      http://www.vlf.it/trond2/10-15khz.html

      http://www.vlf.it/trond2/below10.html

      http://home.pon.net/785/equipment/build_your_own.htm
      There are two ways to intercept a VLF signal: electromagnetically (B-Field) or electrostatically (E-Field). Electrostatic pertains to the charge voltage or current wave of the signal. Electromagnetic relates to the magnetic influence of a signal.

      http://www.stormwise.com/page28.htm
      http://www.stormwise.com/project10.htm

      http://www.dxzone.com/dx27449/vlf-broadcast-stations-10-150-khz-.html

      http://www.omen.com/vlf.html
      WA7KGX VLF Monitoring
      Signals in the 10 to 30 KHz range are used to send information and commands to submerged submarines worldwide. Most of these VLF stations transmit nearly continuously at constant power. Sudden changes in signal propagation may indicate interesting solar events, or even a strong gamma ray burst.

      http://udini.proquest.com/view/elf-or-vlf-phased-array-generation-pqid:1957930361/
      ELF/VLF phased array generation via frequency-matched steering of a continuous HF ionospheric heating beam
      ProQuest Dissertations and Theses, 2009
      Dissertation
      Author: Morris Bernard Cohen
      Abstract:

      The radio spectrum between 300 Hz and 10 kHz (ELF/VLF) has broad applications to global communication, remote sensing of the ionosphere and magnetosphere, and subterranean prospecting. While lightning is a dominant source of these radio waves, artificial generation of these waves has posed an enduring challenge to scientists and engineers, due to the extremely long wavelengths (30-1000 km) and the lossiness of the Earth's surface at these frequencies. Recently, ELF/VLF waves have been successfully generated by high frequency (HF, 3-10 MHz) heating of the lower ionosphere (60-100 km altitude), which changes the atmospheric plasma conductivity. In the presence of natural currents such as the auroral electrojet, ON-OFF modulation of this HF energy can impose an ELF/VLF alternating current onto those natural currents. This technique turns the lower atmosphere into a large antenna, which radiates energy downward into the Earth-ionosphere waveguide and upward into the magnetosphere. While this technique remains one of the few means of reliable ELF/VLF wave generation, HF to ELF/VLF conversion efficiencies remain quite low. Utilizing the 3.6 MW HAARP HF heating facility in Alaska, we show that proper utilization of motion of the HF beam can boost the generated ELF/VLF wave power by as much as tenfold. Furthermore, as a result of having effectively created the world's first controllable large-element ELF/VLF phased array, directional launching of this energy becomes possible. We utilize theoretical models of the HF heating and cooling process, and of ELF/VLF wave propagation, to illuminate the observations and identify the physical mechanisms underlying the wave generation, particularly as it relates to motion of the HF beam.
    • sandnella
      Soozie, Very interesting article......I saw a special on  tv, I think it was the History Ch., on natural now-frequency Earth sounds. Could be associated with
      Message 2 of 6 , Mar 1 3:09 AM
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        Soozie,
        Very interesting article......I saw a special on  tv, I think it was the History Ch., on natural now-frequency Earth sounds.
        Could be associated with the Hum, or could be the Hum.  If this is where the Hum is coming from......we all have to learn to live with it. We do need proof one way or the other.  Good luck to Glen with his project. 
        Sandra


        From: soozieqty1 <soozieqty1@...>
        To: humforum@yahoogroups.com
        Sent: Thu, February 28, 2013 7:19:40 PM
        Subject: HUM_FORUM: VLF interesting info discovery!

         

        In digging into VLF receivers and related info I found an interesting possible correlation to hum hearing, weather and earth changes. I did not thoroughly read each page and am not certain if this info is applicable to Glens work but I am throwing it on the table for all to read. Here's what I found:
        Exerpt from the web pages listed above the blurb.

        http://www.auroralchorus.com/wr3gde.htm
        POCKET-PORTABLE WR-3 NATURAL-VLF-RADIO PHENOMENA RECEIVER LISTENING GUIDE, By Stephen Paul McGreevy

        This Listening Guide was first begun in mid-1991 and recently updated again May 2010)

        Welcome to the realm of extreme and very-low-frequency (ELF/VLF) "Natural Radio!" The WR-3 is an electric-field ("E-field") type of "whistler receiver" specifically designed to monitor naturally-occurring VLF radio emissions of Earth that occur in the 300-11,000 cycles-per-second (0.3-11 kHz) audio-frequency ELF/VLF radio spectrum. It employs a telescoping whip antenna (BNC-mount) to receive VLF signals and requires stereo-mini headphones to be plugged into its output for listening.

        Earth-along with several other planets in the Solar System including Venus, Jupiter, Saturn, Uranus and Neptune - produces a variety of naturally occurring radio emissions at the lowest end of the radio spectrum (< 10 kHz), primarily in the form of electromagnetic (radio) impulses generated by ongoing lightning storms and also from the Sun's solar wind interacting with the magnetic envelope surrounding Earth, called the "magnetosphere." A large variety of unusual and beautiful Natural Radio sounds can be heard at ELF/VLF frequencies. These naturally-occurring radio signals are the subjects of ongoing scientific research by both amateur and professional groups, and are being monitored both on the ground by users of the WR-3, other ground-based VLF receiver systems, and by unmanned space probes and satellites.

        It is at these lowest frequencies of the radio spectrum in which no man-made signals are assigned, that planet Earth's own mysterious radio emissions have been happening for eons. These fascinating "sounds" are "primal radio"-indifferent to the affairs of humankind-and insight into the causes of these ancient phenomena has only begun to be unraveled in the past 50 years, particularly commencing with the International Geophysical Year beginning in 1957.

        WHEN TO LISTEN FOR NATURAL RADIO PHENOMENA AND WHERE IN THE WORLD THEY OCCUR:
        (Much of the information following should be used concurrently with the above sources of geo-magnetic information for best listening results.)

        Statistically, the time between local midnight and an hour after sunrise is when the greatest amounts of whistlers are heard, although dusk to midnight may reveal substantial whistler activity, and even (though not very often) loud whistlers may be heard a couple of hours before sunset. Over the long term, the period from two hours before sunrise until an hour after sunrise is the optimum time to listen for natural VLF phenomena of all sorts, as the amount of sferics (lightning stroke pops and crackling) are less -- natural VLF radio phenomena are not as "buried" under the sferics as in the evening when lightning storms are more numerous. Also, magnetospheric conditions are optimum around morning twilight time and an hour before for best whistler listening.

        Interestingly, between April 1996 and March 1997, I had been hearing good whistler events during the DAYTIME and particularly late afternoon before sunset! Many times, these whistler events die out after sunset and are not heard at sunrise. But, after that through December 1997, whistlers were once again more frequently heard between 2 - 6 a.m. local time.

        http://www.hard-core-dx.com/nordicdx/antenna/special/vlfactive.html

        http://users.tpg.com.au/users/ldbutler/VLF-LFLoopAerial.htm

        http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790011925_1979011925.pdf

        http://forums.qrz.com/showthread.php?186839-SWEDISH-VERY-LOW-FREQUENCY-(VLF)-TEST-TRANSMISSION-ON-17-2-kHz/page2
        I have no serious power line noise problem on VLF (0 to 22 KHz on the SM6LKM SAQ downloaded VLF receiver on http://web.telia.com/~u33233109/saqrx/saqrx.html

        There is also no power line noise problem on the Kenwood TS480HX which receives between 20 kHz to 30 kHz. I use the 10 kHz clarifier to listen below 30 kHz.

        http://www.herostechnology.co.uk/pages/VLF_LF_Converter.html

        http://www.cliftonlaboratories.com/jackson_harbor_press_vlf_converter.htm

        http://www.radio-ware.com/products/pla1.htm

        http://www.stormwise.com/vlfaq.htm
        Like shortwave radio, VLF can be reflected from the upper atmosphere. But what happens when the waves become too big to fit? Does the upper atmosphere expand to allow the waves room pass thru? No! There is a point in frequency where radio waves get too big to fit between the 35 to 60 miles space between the earth and the upper atmosphere. This point is 1600 Hz (click to listen). These radio waves are so low in frequency that you can actually hear them with your ears, when they are transformed into sound waves by a speaker. Radio waves below 1600 Hz can not travel too far beyond 60 miles.

        Waves below 1600 Hz can travel by conduction through the earth itself. The earth's surface and underground area is very large and the waves below 1600 Hz have plenty of room to travel underground. Frequencies below 1000 Hz are used for earthquake research and other scientific studies. Lightning static drops out very quickly below 1600 Hz.

        Voice and musical sounds of 20 Hz through 20 KHz, can be transformed into VLF radio waves when detected by a microphone. A tape recorder works by recording the VLF waves onto a magnetic cassette tape. During playback, a sensor detects the VLF radio waves from the tape as it is pulled past the sensor. An amplifier boosts the VLF radio waves and sends them to the speaker. The speaker vibrates and produces the sounds that you hear!

        AM and FM radio broadcasts are actually carrying voice and music frequencies - 20 Hz to 20 KHz, this is VLF being carried through the air on much higher-frequency radio wave, but it is not VLF until it flows as electrical current to your radio's speakers.

        http://www.w6ze.org/Heathkit/Heathkit_016_HD1420.pdf

        http://martykaiser.com/vlf59-10~1.htm

        http://k1el.tripod.com/VLF.html

        http://www.vlf.it/trond2/10-15khz.html

        http://www.vlf.it/trond2/below10.html

        http://home.pon.net/785/equipment/build_your_own.htm
        There are two ways to intercept a VLF signal: electromagnetically (B-Field) or electrostatically (E-Field). Electrostatic pertains to the charge voltage or current wave of the signal. Electromagnetic relates to the magnetic influence of a signal.

        http://www.stormwise.com/page28.htm
        http://www.stormwise.com/project10.htm

        http://www.dxzone.com/dx27449/vlf-broadcast-stations-10-150-khz-.html

        http://www.omen.com/vlf.html
        WA7KGX VLF Monitoring
        Signals in the 10 to 30 KHz range are used to send information and commands to submerged submarines worldwide. Most of these VLF stations transmit nearly continuously at constant power. Sudden changes in signal propagation may indicate interesting solar events, or even a strong gamma ray burst.

        http://udini.proquest.com/view/elf-or-vlf-phased-array-generation-pqid:1957930361/
        ELF/VLF phased array generation via frequency-matched steering of a continuous HF ionospheric heating beam
        ProQuest Dissertations and Theses, 2009
        Dissertation
        Author: Morris Bernard Cohen
        Abstract:

        The radio spectrum between 300 Hz and 10 kHz (ELF/VLF) has broad applications to global communication, remote sensing of the ionosphere and magnetosphere, and subterranean prospecting. While lightning is a dominant source of these radio waves, artificial generation of these waves has posed an enduring challenge to scientists and engineers, due to the extremely long wavelengths (30-1000 km) and the lossiness of the Earth's surface at these frequencies. Recently, ELF/VLF waves have been successfully generated by high frequency (HF, 3-10 MHz) heating of the lower ionosphere (60-100 km altitude), which changes the atmospheric plasma conductivity. In the presence of natural currents such as the auroral electrojet, ON-OFF modulation of this HF energy can impose an ELF/VLF alternating current onto those natural currents. This technique turns the lower atmosphere into a large antenna, which radiates energy downward into the Earth-ionosphere waveguide and upward into the magnetosphere. While this technique remains one of the few means of reliable ELF/VLF wave generation, HF to ELF/VLF conversion efficiencies remain quite low. Utilizing the 3.6 MW HAARP HF heating facility in Alaska, we show that proper utilization of motion of the HF beam can boost the generated ELF/VLF wave power by as much as tenfold. Furthermore, as a result of having effectively created the world's first controllable large-element ELF/VLF phased array, directional launching of this energy becomes possible. We utilize theoretical models of the HF heating and cooling process, and of ELF/VLF wave propagation, to illuminate the observations and identify the physical mechanisms underlying the wave generation, particularly as it relates to motion of the HF beam.

      • Steve Kohlhase
        http://www.berkeley.edu/news/media/releases/2006/09/14_theta.shtml   Maybe throw this in to understanding why our minds are getting screwed up. 
        Message 3 of 6 , Mar 1 3:46 AM
        • 0 Attachment
           
          Maybe throw this in to understanding why our minds are getting screwed up. 

          From: sandnella <sandnella@...>
          To: humforum@yahoogroups.com
          Sent: Friday, March 1, 2013 6:09 AM
          Subject: Re: HUM_FORUM: VLF interesting info discovery!
           
          Soozie,
          Very interesting article......I saw a special on  tv, I think it was the History Ch., on natural now-frequency Earth sounds.
          Could be associated with the Hum, or could be the Hum.  If this is where the Hum is coming from......we all have to learn to live with it. We do need proof one way or the other.  Good luck to Glen with his project. 
          Sandra

          From: soozieqty1 <soozieqty1@...>
          To: humforum@yahoogroups.com
          Sent: Thu, February 28, 2013 7:19:40 PM
          Subject: HUM_FORUM: VLF interesting info discovery!
           
          In digging into VLF receivers and related info I found an interesting possible correlation to hum hearing, weather and earth changes. I did not thoroughly read each page and am not certain if this info is applicable to Glens work but I am throwing it on the table for all to read. Here's what I found:
          Exerpt from the web pages listed above the blurb.

          http://www.auroralchorus.com/wr3gde.htm
          POCKET-PORTABLE WR-3 NATURAL-VLF-RADIO PHENOMENA RECEIVER LISTENING GUIDE, By Stephen Paul McGreevy

          This Listening Guide was first begun in mid-1991 and recently updated again May 2010)

          Welcome to the realm of extreme and very-low-frequency (ELF/VLF) "Natural Radio!" The WR-3 is an electric-field ("E-field") type of "whistler receiver" specifically designed to monitor naturally-occurring VLF radio emissions of Earth that occur in the 300-11,000 cycles-per-second (0.3-11 kHz) audio-frequency ELF/VLF radio spectrum. It employs a telescoping whip antenna (BNC-mount) to receive VLF signals and requires stereo-mini headphones to be plugged into its output for listening.

          Earth-along with several other planets in the Solar System including Venus, Jupiter, Saturn, Uranus and Neptune - produces a variety of naturally occurring radio emissions at the lowest end of the radio spectrum (< 10 kHz), primarily in the form of electromagnetic (radio) impulses generated by ongoing lightning storms and also from the Sun's solar wind interacting with the magnetic envelope surrounding Earth, called the "magnetosphere." A large variety of unusual and beautiful Natural Radio sounds can be heard at ELF/VLF frequencies. These naturally-occurring radio signals are the subjects of ongoing scientific research by both amateur and professional groups, and are being monitored both on the ground by users of the WR-3, other ground-based VLF receiver systems, and by unmanned space probes and satellites.

          It is at these lowest frequencies of the radio spectrum in which no man-made signals are assigned, that planet Earth's own mysterious radio emissions have been happening for eons. These fascinating "sounds" are "primal radio"-indifferent to the affairs of humankind-and insight into the causes of these ancient phenomena has only begun to be unraveled in the past 50 years, particularly commencing with the International Geophysical Year beginning in 1957.

          WHEN TO LISTEN FOR NATURAL RADIO PHENOMENA AND WHERE IN THE WORLD THEY OCCUR:
          (Much of the information following should be used concurrently with the above sources of geo-magnetic information for best listening results.)

          Statistically, the time between local midnight and an hour after sunrise is when the greatest amounts of whistlers are heard, although dusk to midnight may reveal substantial whistler activity, and even (though not very often) loud whistlers may be heard a couple of hours before sunset. Over the long term, the period from two hours before sunrise until an hour after sunrise is the optimum time to listen for natural VLF phenomena of all sorts, as the amount of sferics (lightning stroke pops and crackling) are less -- natural VLF radio phenomena are not as "buried" under the sferics as in the evening when lightning storms are more numerous. Also, magnetospheric conditions are optimum around morning twilight time and an hour before for best whistler listening.

          Interestingly, between April 1996 and March 1997, I had been hearing good whistler events during the DAYTIME and particularly late afternoon before sunset! Many times, these whistler events die out after sunset and are not heard at sunrise. But, after that through December 1997, whistlers were once again more frequently heard between 2 - 6 a.m. local time.

          http://www.hard-core-dx.com/nordicdx/antenna/special/vlfactive.html

          http://users.tpg.com.au/users/ldbutler/VLF-LFLoopAerial.htm

          http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790011925_1979011925.pdf

          http://forums.qrz.com/showthread.php?186839-SWEDISH-VERY-LOW-FREQUENCY-(VLF)-TEST-TRANSMISSION-ON-17-2-kHz/page2
          I have no serious power line noise problem on VLF (0 to 22 KHz on the SM6LKM SAQ downloaded VLF receiver on http://web.telia.com/~u33233109/saqrx/saqrx.html

          There is also no power line noise problem on the Kenwood TS480HX which receives between 20 kHz to 30 kHz. I use the 10 kHz clarifier to listen below 30 kHz.

          http://www.herostechnology.co.uk/pages/VLF_LF_Converter.html

          http://www.cliftonlaboratories.com/jackson_harbor_press_vlf_converter.htm

          http://www.radio-ware.com/products/pla1.htm

          http://www.stormwise.com/vlfaq.htm
          Like shortwave radio, VLF can be reflected from the upper atmosphere. But what happens when the waves become too big to fit? Does the upper atmosphere expand to allow the waves room pass thru? No! There is a point in frequency where radio waves get too big to fit between the 35 to 60 miles space between the earth and the upper atmosphere. This point is 1600 Hz (click to listen). These radio waves are so low in frequency that you can actually hear them with your ears, when they are transformed into sound waves by a speaker. Radio waves below 1600 Hz can not travel too far beyond 60 miles.

          Waves below 1600 Hz can travel by conduction through the earth itself. The earth's surface and underground area is very large and the waves below 1600 Hz have plenty of room to travel underground. Frequencies below 1000 Hz are used for earthquake research and other scientific studies. Lightning static drops out very quickly below 1600 Hz.

          Voice and musical sounds of 20 Hz through 20 KHz, can be transformed into VLF radio waves when detected by a microphone. A tape recorder works by recording the VLF waves onto a magnetic cassette tape. During playback, a sensor detects the VLF radio waves from the tape as it is pulled past the sensor. An amplifier boosts the VLF radio waves and sends them to the speaker. The speaker vibrates and produces the sounds that you hear!

          AM and FM radio broadcasts are actually carrying voice and music frequencies - 20 Hz to 20 KHz, this is VLF being carried through the air on much higher-frequency radio wave, but it is not VLF until it flows as electrical current to your radio's speakers.

          http://www.w6ze.org/Heathkit/Heathkit_016_HD1420.pdf

          http://martykaiser.com/vlf59-10~1.htm

          http://k1el.tripod.com/VLF.html

          http://www.vlf.it/trond2/10-15khz.html

          http://www.vlf.it/trond2/below10.html

          http://home.pon.net/785/equipment/build_your_own.htm
          There are two ways to intercept a VLF signal: electromagnetically (B-Field) or electrostatically (E-Field). Electrostatic pertains to the charge voltage or current wave of the signal. Electromagnetic relates to the magnetic influence of a signal.

          http://www.stormwise.com/page28.htm
          http://www.stormwise.com/project10.htm

          http://www.dxzone.com/dx27449/vlf-broadcast-stations-10-150-khz-.html

          http://www.omen.com/vlf.html
          WA7KGX VLF Monitoring
          Signals in the 10 to 30 KHz range are used to send information and commands to submerged submarines worldwide. Most of these VLF stations transmit nearly continuously at constant power. Sudden changes in signal propagation may indicate interesting solar events, or even a strong gamma ray burst.

          http://udini.proquest.com/view/elf-or-vlf-phased-array-generation-pqid:1957930361/
          ELF/VLF phased array generation via frequency-matched steering of a continuous HF ionospheric heating beam
          ProQuest Dissertations and Theses, 2009
          Dissertation
          Author: Morris Bernard Cohen
          Abstract:

          The radio spectrum between 300 Hz and 10 kHz (ELF/VLF) has broad applications to global communication, remote sensing of the ionosphere and magnetosphere, and subterranean prospecting. While lightning is a dominant source of these radio waves, artificial generation of these waves has posed an enduring challenge to scientists and engineers, due to the extremely long wavelengths (30-1000 km) and the lossiness of the Earth's surface at these frequencies. Recently, ELF/VLF waves have been successfully generated by high frequency (HF, 3-10 MHz) heating of the lower ionosphere (60-100 km altitude), which changes the atmospheric plasma conductivity. In the presence of natural currents such as the auroral electrojet, ON-OFF modulation of this HF energy can impose an ELF/VLF alternating current onto those natural currents. This technique turns the lower atmosphere into a large antenna, which radiates energy downward into the Earth-ionosphere waveguide and upward into the magnetosphere. While this technique remains one of the few means of reliable ELF/VLF wave generation, HF to ELF/VLF conversion efficiencies remain quite low. Utilizing the 3.6 MW HAARP HF heating facility in Alaska, we show that proper utilization of motion of the HF beam can boost the generated ELF/VLF wave power by as much as tenfold. Furthermore, as a result of having effectively created the world's first controllable large-element ELF/VLF phased array, directional launching of this energy becomes possible. We utilize theoretical models of the HF heating and cooling process, and of ELF/VLF wave propagation, to illuminate the observations and identify the physical mechanisms underlying the wave generation, particularly as it relates to motion of the HF beam.

        • Jim
          McGreevy is, simply put, one very, very smart and very, very active radio experimenter. His BBB-4 receiver is fairly easy to build, uses readily available
          Message 4 of 6 , Mar 1 4:06 AM
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            McGreevy is, simply put, one very, very smart and very, very active
            radio experimenter. His BBB-4 receiver is fairly easy to build, uses
            readily available parts, and does a good job. The one thing I would say
            is that the "earth sounds" tend to be totally swamped by man-made noise
            unless you get out in the open with no powerlines or homes within a
            quarter to a half mile. NASA used to have an earth sounds receiver you
            could listen to on-line but it hasn't been working in some time. (There
            are recordings at the NASA site, you can google it and find the site.)

            McGreevy also was involved in deploying some very low-power beacons on
            shortwave. A nightlight is typically around 4 watts and he used powers
            more like 1/10 of a watt. Conventional wisdom would be that something
            like that might be heard sporadically a few dozen miles away. In fact he
            was the inspiration for a group of PiFERs. (LowFERs are "Low Frequency
            Experimental Radio" enthusiasts and hobiest who focus on frequencies
            below 500 kHz or so and PiFERs are "Pirate Frequency Experimental Radio"
            enthusiasts who deploy solar powered "pirate" [unlicensed] beacons
            around the country. A few years back I logged low-power PiFER beacon
            from the Pacific Northwest here in Atlanta--something a lot would argue
            was a fluke, except I did it for several mornings over a two week period
            with decent reception.)

            One thing I will say about low frequency radio is that reception tends
            to be noticeably better in the winter when the leaves are off the trees.
            Most low frequency signals attenuate quickly through foliage. They
            operate higher in frequency, but anyone who is interested in learning
            more about low frequency radio should google NDB or "non directional
            beacons". These are low-power transmitters used at airports and is kind
            of a vintage "direction finding" technology. In theory they should only
            be heard a few dozen miles away also, but I (and many others) have
            logged NDBs from hundreds and thousands of miles. (I can regularly
            receive the Caribbean and Canada as well as many beacons in the mid-West.)

            The Longwave Club of America is another resource. (Low frequency means
            you have a "long wavelength" while higher frequencies become
            "shortwave"--this is kind of dated terminology in terms of radio
            frequencies today but came into use well before the second world war.)

            I actually think the "whistlers" may have something to teach us about
            some cases of the hum--they are believed to be caused by the radio
            wave-front caused by a lightning strike "colliding" with itself coming
            from different directions after traveling around the world each way. In
            engineering terms this would be "multi-path hetrodyning". A similar
            effect could occur with audio waves or even shifts in atmospheric
            pressure. There was some discussion about peoples perception of the hum
            as they climbed to higher altitudes that would be consistent with some
            kind of "audio multi-path hetrodyning".

            Jim
          • sandnella
            Good article Jim......Last year, a low frequency experimental radio enthusiasts was posting on this forum.  He was trying to steer the group away from radio
            Message 5 of 6 , Mar 1 4:19 AM
            • 0 Attachment
              Good article Jim......Last year, a low frequency experimental radio enthusiasts was posting on this forum.  He was trying to steer the group away from radio waves.  When I called him out.....he denied being on other web sites having to do with " Experimental Radio"....Then he dropped off this forum.  Strange isn't it ? 
              I personally think the Hum hearing has to do with location on the planet.  I moved away from my Hum.  I can never go home again.
              Sandra


              From: Jim <w4jbm@...>
              To: humforum@yahoogroups.com
              Sent: Fri, March 1, 2013 6:06:18 AM
              Subject: HUM_FORUM: Re: VLF interesting info discovery!

               

              McGreevy is, simply put, one very, very smart and very, very active
              radio experimenter. His BBB-4 receiver is fairly easy to build, uses
              readily available parts, and does a good job. The one thing I would say
              is that the "earth sounds" tend to be totally swamped by man-made noise
              unless you get out in the open with no powerlines or homes within a
              quarter to a half mile. NASA used to have an earth sounds receiver you
              could listen to on-line but it hasn't been working in some time. (There
              are recordings at the NASA site, you can google it and find the site.)

              McGreevy also was involved in deploying some very low-power beacons on
              shortwave. A nightlight is typically around 4 watts and he used powers
              more like 1/10 of a watt. Conventional wisdom would be that something
              like that might be heard sporadically a few dozen miles away. In fact he
              was the inspiration for a group of PiFERs. (LowFERs are "Low Frequency
              Experimental Radio" enthusiasts and hobiest who focus on frequencies
              below 500 kHz or so and PiFERs are "Pirate Frequency Experimental Radio"
              enthusiasts who deploy solar powered "pirate" [unlicensed] beacons
              around the country. A few years back I logged low-power PiFER beacon
              from the Pacific Northwest here in Atlanta--something a lot would argue
              was a fluke, except I did it for several mornings over a two week period
              with decent reception.)

              One thing I will say about low frequency radio is that reception tends
              to be noticeably better in the winter when the leaves are off the trees.
              Most low frequency signals attenuate quickly through foliage. They
              operate higher in frequency, but anyone who is interested in learning
              more about low frequency radio should google NDB or "non directional
              beacons". These are low-power transmitters used at airports and is kind
              of a vintage "direction finding" technology. In theory they should only
              be heard a few dozen miles away also, but I (and many others) have
              logged NDBs from hundreds and thousands of miles. (I can regularly
              receive the Caribbean and Canada as well as many beacons in the mid-West.)

              The Longwave Club of America is another resource. (Low frequency means
              you have a "long wavelength" while higher frequencies become
              "shortwave"--this is kind of dated terminology in terms of radio
              frequencies today but came into use well before the second world war.)

              I actually think the "whistlers" may have something to teach us about
              some cases of the hum--they are believed to be caused by the radio
              wave-front caused by a lightning strike "colliding" with itself coming
              from different directions after traveling around the world each way. In
              engineering terms this would be "multi-path hetrodyning". A similar
              effect could occur with audio waves or even shifts in atmospheric
              pressure. There was some discussion about peoples perception of the hum
              as they climbed to higher altitudes that would be consistent with some
              kind of "audio multi-path hetrodyning".

              Jim

            • sandnella
              The brain is the most complex organ on this planet.  With that said.....anything is possible.  ________________________________ From: Steve Kohlhase
              Message 6 of 6 , Mar 1 4:26 AM
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                The brain is the most complex organ on this planet.  With that said.....anything is possible. 


                From: Steve Kohlhase <c_o_p_s_ne@...>
                To: "humforum@yahoogroups.com" <humforum@yahoogroups.com>
                Sent: Fri, March 1, 2013 5:46:32 AM
                Subject: Re: HUM_FORUM: VLF interesting info discovery!

                 

                 
                Maybe throw this in to understanding why our minds are getting screwed up. 

                From: sandnella <sandnella@...>
                To: humforum@yahoogroups.com
                Sent: Friday, March 1, 2013 6:09 AM
                Subject: Re: HUM_FORUM: VLF interesting info discovery!
                 
                Soozie,
                Very interesting article......I saw a special on  tv, I think it was the History Ch., on natural now-frequency Earth sounds.
                Could be associated with the Hum, or could be the Hum.  If this is where the Hum is coming from......we all have to learn to live with it. We do need proof one way or the other.  Good luck to Glen with his project. 
                Sandra

                From: soozieqty1 <soozieqty1@...>
                To: humforum@yahoogroups.com
                Sent: Thu, February 28, 2013 7:19:40 PM
                Subject: HUM_FORUM: VLF interesting info discovery!
                 
                In digging into VLF receivers and related info I found an interesting possible correlation to hum hearing, weather and earth changes. I did not thoroughly read each page and am not certain if this info is applicable to Glens work but I am throwing it on the table for all to read. Here's what I found:
                Exerpt from the web pages listed above the blurb.

                http://www.auroralchorus.com/wr3gde.htm
                POCKET-PORTABLE WR-3 NATURAL-VLF-RADIO PHENOMENA RECEIVER LISTENING GUIDE, By Stephen Paul McGreevy

                This Listening Guide was first begun in mid-1991 and recently updated again May 2010)

                Welcome to the realm of extreme and very-low-frequency (ELF/VLF) "Natural Radio!" The WR-3 is an electric-field ("E-field") type of "whistler receiver" specifically designed to monitor naturally-occurring VLF radio emissions of Earth that occur in the 300-11,000 cycles-per-second (0.3-11 kHz) audio-frequency ELF/VLF radio spectrum. It employs a telescoping whip antenna (BNC-mount) to receive VLF signals and requires stereo-mini headphones to be plugged into its output for listening.

                Earth-along with several other planets in the Solar System including Venus, Jupiter, Saturn, Uranus and Neptune - produces a variety of naturally occurring radio emissions at the lowest end of the radio spectrum (< 10 kHz), primarily in the form of electromagnetic (radio) impulses generated by ongoing lightning storms and also from the Sun's solar wind interacting with the magnetic envelope surrounding Earth, called the "magnetosphere." A large variety of unusual and beautiful Natural Radio sounds can be heard at ELF/VLF frequencies. These naturally-occurring radio signals are the subjects of ongoing scientific research by both amateur and professional groups, and are being monitored both on the ground by users of the WR-3, other ground-based VLF receiver systems, and by unmanned space probes and satellites.

                It is at these lowest frequencies of the radio spectrum in which no man-made signals are assigned, that planet Earth's own mysterious radio emissions have been happening for eons. These fascinating "sounds" are "primal radio"-indifferent to the affairs of humankind-and insight into the causes of these ancient phenomena has only begun to be unraveled in the past 50 years, particularly commencing with the International Geophysical Year beginning in 1957.

                WHEN TO LISTEN FOR NATURAL RADIO PHENOMENA AND WHERE IN THE WORLD THEY OCCUR:
                (Much of the information following should be used concurrently with the above sources of geo-magnetic information for best listening results.)

                Statistically, the time between local midnight and an hour after sunrise is when the greatest amounts of whistlers are heard, although dusk to midnight may reveal substantial whistler activity, and even (though not very often) loud whistlers may be heard a couple of hours before sunset. Over the long term, the period from two hours before sunrise until an hour after sunrise is the optimum time to listen for natural VLF phenomena of all sorts, as the amount of sferics (lightning stroke pops and crackling) are less -- natural VLF radio phenomena are not as "buried" under the sferics as in the evening when lightning storms are more numerous. Also, magnetospheric conditions are optimum around morning twilight time and an hour before for best whistler listening.

                Interestingly, between April 1996 and March 1997, I had been hearing good whistler events during the DAYTIME and particularly late afternoon before sunset! Many times, these whistler events die out after sunset and are not heard at sunrise. But, after that through December 1997, whistlers were once again more frequently heard between 2 - 6 a.m. local time.

                http://www.hard-core-dx.com/nordicdx/antenna/special/vlfactive.html

                http://users.tpg.com.au/users/ldbutler/VLF-LFLoopAerial.htm

                http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790011925_1979011925.pdf

                http://forums.qrz.com/showthread.php?186839-SWEDISH-VERY-LOW-FREQUENCY-(VLF)-TEST-TRANSMISSION-ON-17-2-kHz/page2
                I have no serious power line noise problem on VLF (0 to 22 KHz on the SM6LKM SAQ downloaded VLF receiver on http://web.telia.com/~u33233109/saqrx/saqrx.html

                There is also no power line noise problem on the Kenwood TS480HX which receives between 20 kHz to 30 kHz. I use the 10 kHz clarifier to listen below 30 kHz.

                http://www.herostechnology.co.uk/pages/VLF_LF_Converter.html

                http://www.cliftonlaboratories.com/jackson_harbor_press_vlf_converter.htm

                http://www.radio-ware.com/products/pla1.htm

                http://www.stormwise.com/vlfaq.htm
                Like shortwave radio, VLF can be reflected from the upper atmosphere. But what happens when the waves become too big to fit? Does the upper atmosphere expand to allow the waves room pass thru? No! There is a point in frequency where radio waves get too big to fit between the 35 to 60 miles space between the earth and the upper atmosphere. This point is 1600 Hz (click to listen). These radio waves are so low in frequency that you can actually hear them with your ears, when they are transformed into sound waves by a speaker. Radio waves below 1600 Hz can not travel too far beyond 60 miles.

                Waves below 1600 Hz can travel by conduction through the earth itself. The earth's surface and underground area is very large and the waves below 1600 Hz have plenty of room to travel underground. Frequencies below 1000 Hz are used for earthquake research and other scientific studies. Lightning static drops out very quickly below 1600 Hz.

                Voice and musical sounds of 20 Hz through 20 KHz, can be transformed into VLF radio waves when detected by a microphone. A tape recorder works by recording the VLF waves onto a magnetic cassette tape. During playback, a sensor detects the VLF radio waves from the tape as it is pulled past the sensor. An amplifier boosts the VLF radio waves and sends them to the speaker. The speaker vibrates and produces the sounds that you hear!

                AM and FM radio broadcasts are actually carrying voice and music frequencies - 20 Hz to 20 KHz, this is VLF being carried through the air on much higher-frequency radio wave, but it is not VLF until it flows as electrical current to your radio's speakers.

                http://www.w6ze.org/Heathkit/Heathkit_016_HD1420.pdf

                http://martykaiser.com/vlf59-10~1.htm

                http://k1el.tripod.com/VLF.html

                http://www.vlf.it/trond2/10-15khz.html

                http://www.vlf.it/trond2/below10.html

                http://home.pon.net/785/equipment/build_your_own.htm
                There are two ways to intercept a VLF signal: electromagnetically (B-Field) or electrostatically (E-Field). Electrostatic pertains to the charge voltage or current wave of the signal. Electromagnetic relates to the magnetic influence of a signal.

                http://www.stormwise.com/page28.htm
                http://www.stormwise.com/project10.htm

                http://www.dxzone.com/dx27449/vlf-broadcast-stations-10-150-khz-.html

                http://www.omen.com/vlf.html
                WA7KGX VLF Monitoring
                Signals in the 10 to 30 KHz range are used to send information and commands to submerged submarines worldwide. Most of these VLF stations transmit nearly continuously at constant power. Sudden changes in signal propagation may indicate interesting solar events, or even a strong gamma ray burst.

                http://udini.proquest.com/view/elf-or-vlf-phased-array-generation-pqid:1957930361/
                ELF/VLF phased array generation via frequency-matched steering of a continuous HF ionospheric heating beam
                ProQuest Dissertations and Theses, 2009
                Dissertation
                Author: Morris Bernard Cohen
                Abstract:

                The radio spectrum between 300 Hz and 10 kHz (ELF/VLF) has broad applications to global communication, remote sensing of the ionosphere and magnetosphere, and subterranean prospecting. While lightning is a dominant source of these radio waves, artificial generation of these waves has posed an enduring challenge to scientists and engineers, due to the extremely long wavelengths (30-1000 km) and the lossiness of the Earth's surface at these frequencies. Recently, ELF/VLF waves have been successfully generated by high frequency (HF, 3-10 MHz) heating of the lower ionosphere (60-100 km altitude), which changes the atmospheric plasma conductivity. In the presence of natural currents such as the auroral electrojet, ON-OFF modulation of this HF energy can impose an ELF/VLF alternating current onto those natural currents. This technique turns the lower atmosphere into a large antenna, which radiates energy downward into the Earth-ionosphere waveguide and upward into the magnetosphere. While this technique remains one of the few means of reliable ELF/VLF wave generation, HF to ELF/VLF conversion efficiencies remain quite low. Utilizing the 3.6 MW HAARP HF heating facility in Alaska, we show that proper utilization of motion of the HF beam can boost the generated ELF/VLF wave power by as much as tenfold. Furthermore, as a result of having effectively created the world's first controllable large-element ELF/VLF phased array, directional launching of this energy becomes possible. We utilize theoretical models of the HF heating and cooling process, and of ELF/VLF wave propagation, to illuminate the observations and identify the physical mechanisms underlying the wave generation, particularly as it relates to motion of the HF beam.

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